• Introduction to Buying a Monitor
• CRTs
• LCDs
• Screen Size
• Aspect Ratio
• Resolution
• Moonlight as a Television
• Illumination
• Controls
• Connections
• Budget
• Additional Features
• Environment
• Monitor Brands (LCD)
• Monitor Brands (CRT)
• Top Monitor Searches
• Useful Sites

Introduction to Buying a Monitor
Usually when buying a new computer the manufacturer will offer a specific monitor as part of the package, although the customer may be offered a choice of screen sizes.  But with the recent advancements in monitor technology and the huge choice of models and sizes, one should able to find a suitable monitor without having to confine oneself to the packaged offer.

There are many factors that should influence the selection of a monitor.  Budget limitations, space constraints, what the computer will be used for, aesthetics and environmental issues should all be taken into consideration.

The new kid on the block in the monitor neighborhood is the Liquid Crystal Display (LCD).  This technology is replacing the older Cathode Ray Tube (CRT), and has recently passed CRTs in sales.  Like most other electronic products, LCDs are getting cheaper and better as time goes by, so it is definitely a buyers’ market.

In this guide we will discuss the difference between different monitor types and sizes, so by following the explanations of the technical terms you will be able to decide what is the best fit for you.

CRTs
Cathode Ray Tube technology has been around for over a hundred years.  These displays have long been used in televisions, radar screens, medical equipment, and of course- computer monitors.  The popular terms “tube” and “fishbowl” are derived from the large glass bubble which the picture is projected into, which makes these units quite large and heavy.

Even though CRTs are almost outdated, there are still three functions that they perform better than most LCDs.  They produce a deep, color-rich picture, which is extremely important for graphic artists and video editors.  They also provide a printer-accurate display, which means that the graphics displayed are exactly what will be printed (which is not always the case with LCDs).  This feature is also critical for graphics work. Thirdly, CRTs update very quickly when displaying fast-moving action, which makes them ideal for serious video gamers.

If you’re thinking about getting a CRT monitor, go for a newer flat-screen model that won’t reflect glare as much.  Look for a high refresh-rate as well, such as 75 Hertz (or higher), which will help reduce eyestrain.

LCDs
Over the last ten years the development of laptops, notebooks, PDA’s and flat-screen televisions has been made possible due to the perfection of LCD technology.  These displays use liquid crystals sandwiched between two filters instead of electrons and a glass tube.  This is what enables LCD screens to be extremely thin and much lighter than CRTs, while also using less electrical power.  If a notebook PC had to power a CRT screen, it would need a battery the size of a briefcase.

So let’s look at some of the distinct advantages an LCD presents over a CRT:
• Smaller size- an LCD monitor is paper-thin in comparison to a CRT unit, so you can save valuable desk space or even hang the screen on the wall.  Also note that a 15-inch LCD screen will have the same actual display area as a 17-inch CRT.
• Weight- with its lighter weight an LCD is cheaper to ship and easier to move from place to place.
• Reduced eyestrain- even though it is much too quick to notice, a CRT screen is flickering constantly.  But an LCD doesn’t flicker at all, so you can use an LCD for hours without your eyes hurting.
• Landscape or portrait mode- some LCDs can pivot from horizontal to vertical mode, which can be useful for reading documents, as a whole page can fit on a vertical screen.
• Image geometry- LCD screens provide good display geometry and convergence of objects on the screen.
• Interference- they are also less prone to interference from cell phones, televisions and other devices.  It is even possible to place two LCDs side-by-side without encountering any problems.
• Flat screens- the flat screen of an LCD reflects less glare than a curved CRT screen.
• Environmental concerns- which we will discuss separately.

Screen Size
The size of monitors (and televisions too) is the diagonal length of the screen in inches.  A larger screen can display more information, but the quality of the picture is determined by its resolution rating.

A 15-inch screen is a decent size for most applications, and is the standard for most notebook computers.  More programs can be viewed simultaneously on a 17-inch model, which will also be more comfortable to use.  Anything in the 19-inch-or-higher range can display more than one document at a time, making desktop publishing easier.

Note that Windows supports multiple graphics adaptors, so it’s possible to connect more than one monitor at a time.  Using two smaller monitors as opposed to one large one can produce a better picture and even be a lot cheaper, as monitor prices increase disproportionately for larger models.

Aspect Ratio
Every screen’s dimensions match a specific ratio.  Most televisions and computer monitors have a 4:3 ratio, which means that the screen is 4/3 as wide as it is tall.  Movie screens follow a 16:9 ratio, which is why rental videos have to be formatted to fit television screens.

However the LCD technology provides such an improvement in display-flexibility that manufacturers are producing widescreen televisions and monitors, with the 16:9 ratio being the most common.  This ratio allows a better view of television programs, movies and information on a computer screen.

These widescreen monitors allow people who need to work on different documents or programs simultaneously to do so easily without having to reduce their size.

Resolution
Aside from the actual screen size, the most important factor in determining picture quality is its resolution.  Different monitors have different resolution ratings which they are optimized for, though CRTs are generally better at displaying images not in their native resolution than LCDs are.

Resolution is determined by the number of pixels used to display the picture on the screen.  This number is usually established by how many pixels are in each row or column.  For instance, 640×480 means that there are 640 pixels in every row and 480 in every column, and the aspect ratio is 4:3.

A higher pixel count means the monitor offers better resolution.  Today the most common LCD display resolutions are 1024×768 (XGA/XVGA, eXtended), 1280×1024 (SXGA, Super eXtended Graphics Array), and 1600×1200 resolution (UXGA, Ultra-eXtended).  The UXGA is useful for graphic artists and serious video-gamers if they have the required equipment, while the SXGA is the standard for 19-inch monitors.

When choosing a new monitor, go for the highest resolution your budget and screen size allow.  The rated resolution is the LCD’s ‘native resolution’ which it displays best.  But monitors can also display other resolutions, which can cause the picture to be distorted.  The ‘native’ resolution for each monitor is the one listed alongside the screen size, while the other resolutions it supports are usually listed among the product’s details.

Moonlight as a Television
Some newer LCD screens can display video as well as computer data.  There are different ways to hook up a monitor to a video signal; some models have a special video port for a video or S-video cable.  Others use a built-in tuner to connect to television or cable signals.

Also check for picture-in-picture or picture-on-picture features that make it possible to view video while working on other things.  Some monitors even have RGB support for HDTV.  Keep in mind that instead of paying for built-in video and audio processing devices, it may be cheaper to add a graphics adapter or other hardware bought separately.

Illumination
The heart of the LCD is the backlight that illuminates the display.  This is the only part of the LCD that can wear out over time, so check its warranty (which may be different than the warranty of the monitor itself).

Besides a backlight malfunction there can also be pixel defects, or ‘dead pixels’.  These are pixels that are stuck on or off, and produce a black dot on the screen.  Look for ISO regulatory approval for pixel defects listed among the monitor’s details.

Controls
Monitors have controls to adjust the brightness and contrast of the display.  Many LCDs have on-screen menus for adjustments in addition to the traditional manual controls on the front of the unit.  Models that can also be used as televisions should have a remote control where these features can be adjusted.

Connections
There are 3 different types of cable connections for monitors.  The standard one for many years has been the VGA cable, which uses an analog format.  The computer generates digital display commands, which are then converted to analog for the cable.  After the data passes through the cable and reaches the screen it is transformed back to digital, making this an overcomplicated process.  But most LCD monitors have good automatic analog-to-digital converters, so using a VGA cable hardly affects performance.

A new cable technology was developed in 1999 for digital computer-monitor connection.  It’s called Digital-Video-Interface, or DVI, and is found today on most computers and monitors, in addition to VGA ports.  This cable produces a better connection and smoother data-transfer, which can come in handy when running high-speed programs.

Today there is another new connection technology on the market, called HDMI.  This is a very small connector capable of transferring audio and video data at high speed without having to compress it.  But this connection is still more common on PDAs and DVD players than on monitors, so you probably won’t find many models that can use it.

Budget
LCD prices are constantly dropping due to the improvement in technology and the increased competition.  A CRT will still be cheaper than an LCD of the same size, but the distinct advantages the latter presents should make the extra investment worthwhile.

Generally speaking, it is probably a good idea to purchase the biggest monitor your budget and space allow you.  It is also recommended to go for well-known brands, as this would help ensure the monitor is reliable and the picture-quality is satisfactory.

Note that some LCD televisions can also be used as monitors, so if you’re looking to buy a monitor over 21 inches in size, you might want to consider buying a TV instead.

LCD prices range from about $150-$4000, as the prices rise steeply for the bigger models.  Today $200 could even get you a decent-quality 19-inch LCD, albeit with less features than a similarly-priced 17-inch model.  Widescreen monitors will obviously be pricier than the same-sized 4:3 ratio monitor, while higher-resolution will cost more as well.

Additional Features
Listed below are several features that can be found on monitors (often only on LCDs):
• Speakers – some monitors come with built-in speakers, but they are usually not high-quality sound devices.  However, on monitors that also double as TVs you can expect the speakers to be of good quality.
• USB ports- more USB ports can be useful, especially if the ports on the computer are not easily accessible.  This is not a particularly important option, however, as it does not add anything new to the computer system.
• Pivoting display- as was mentioned previously, some LCD screens (especially widescreens) can pivot from the horizontal to the vertical position, which makes it possible to view an entire page lengthwise.  This transition requires some special software usually provided as part of the LCD package, but if it’s not it can be found online.
• Multiple computer ports- if you have more than one computer to hook up to a monitor yet only have space for a single screen, look for a monitor which can handle multiple computer inputs.  The way the monitor switches between them will often be by the flip of a switch on the front of the unit, which makes the operation quite simple.
• Mounting options- one of the bigger advantages an LCD offers is its smaller size, which allows it to be attached to a wall-mounted or table-mounted arm.  This is useful because it helps save space around the computer work-area.
• Viewing angle- LCD screens used to be impossible to view from anywhere off the center axis.  But today this has been remedied, with most screens visible up to 80 degrees from off of the center.  Check the viewing-angle specified for your monitor to make sure it will suit your purposes.
• Locks- as LCDs are increasingly lightweight and relatively small, it might be a good idea to buy one with a lock option.  Kensington Locks are a popular lock mechanism for both monitors and notebook computers.

Environment
It is worth mentioning the environmental aspects of different monitors.  LCDs are much more friendly to the environment than CRTs, and this is for a number of reasons.  They emit fewer low-frequency electro-magnetic pulses, and, even thought there is no conclusive evidence yet if these are health hazards, this probably makes the LCD a safer choice.

In addition, LCD monitors are made out of fewer hazardous materials than most CRTs, making them much easier to recycle.  They also use less power and produce less heat than CRTs.  It is also possible to look for a monitor with an Energy Star rating, which ensures that the monitor meets strict international energy efficiency standards.

Monitor Brands (LCD)
IBM  http://www.cubalaya.com/OP-IBM-LCD-monitors
Dell  http://www.cubalaya.com/OP-Dell-LCD-monitors
Samsung  http://www.cubalaya.com/OP-Samsung-LCD-monitors
BenQ  http://www.cubalaya.com/OP-BenQ-LCD-monitors
NEC  http://www.cubalaya.com/OP-NEC-LCD-monitors
Hewlett Packard  http://www.cubalaya.com/OP-HP-LCD-monitors
Apple  http://www.cubalaya.com/OP-Apple-LCD-monitors
Planar  http://www.cubalaya.com/OP-Planar-LCD-monitors
Sony  http://www.cubalaya.com/OP-Sony-LCD-monitor
Hyundai  http://www.cubalaya.com/OP-Hyundai-LCD-monitor
ViewSonic  http://www.cubalaya.com/OP-ViewSonic-LCD-monitors
Acer  http://www.cubalaya.com/OP-Acer-LCD-monitors

Monitor Brands (CRT)
ViewSonic  http://www.cubalaya.com/OP-ViewSonic-CRT-monitor
Hewlett Packard  http://www.cubalaya.com/OP-HP-CRT-monitor
NEC  http://www.cubalaya.com/OP-NEC-CRT-monitor
Philips  http://www.cubalaya.com/OP-Philips-CRT-monitor
IBM  http://www.cubalaya.com/OP-IBM-CRT-monitor
Sony  http://www.cubalaya.com/OP-Sony-CRT-monitor
Samsung  http://www.cubalaya.com/OP-Samsung-CRT-monitor

Useful Sites
Monitors Review Page http://reviews.cnet.com
PC Magazine Monitors Guide  http://www.pcmag.com
NEC Monitors Page  www.nec.com
Dell Monitors Page  www.dell.com
Acer Monitors Page  www.acer.com
BenQ Monitors Page  www.benq.com
LCD Monitor Repair http://lcdrepair.warnetnews.com/

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There are alot of complaining about lcd monitor which is need to be fixed, no product is completely free of defects, one of the biggest problem is the Pixel Problems.

For some cases LCD monitor is different with CRTs which are actively generating the light through phosphors, but in LCD takes white light and filters it to get the desired colors. To do this for each given pixel, three sub pixels are defined for red, green and blue light. For your information, when the sub-pixel is off, the filter will block the specified color of light. But when the sub-pixel is on, it will open the filter to let a desired amount of light through.

Here’s great ebook about how to repair lcd monitor like expert, money back guarantee, I just purchase two month ago, and it really worth to buy.

Actually I have little experience in repairing electronic stuff such as radio, but never for lcd monitor. I was very desperate, and thingking myself for couple of hour, if I call the lcd technical men, how many cost do I have to spent for five different problems?, Oh gosh.. If I don’t fix them, I don’t get any money from my internet cafe. So 3 hours later I call the lcd monitor repair technician “the expert one” because I don’t want it happen again. After have a little conversation, I was shocked that I have to spend more than $5000 for those five lcd monitor repairing.

How can I get those money, $5000 is huge for us. So I ask one of my friend who have the same problem as me, surprisingly he by himself did the monitor repair, and now he is lcd monitor expert in his town.

After asking the secret how he can repair it, he told me he just bought an lcd monitor repair guide book, a perfect guide on how to repair monitor step by step like expert.

So I come accross the site, and bought one. I was surprise, that I can fix those 4 monitors without any help from the expert, the book is the expert.

If you have the similiar problem like me, I recommend you to buy the ebook, by visiting this site here…

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…in repairing LCD monitors. The… Most manufacturers will not release parts to individuals, and if they did…

LCD Monitor Repair?

Is it possible to repair dead pixels on a LCD monitor? … The only thing I’ve ever heard of that doesn’t involve taking anything apart was to gently rub the area…

How do you test and/or repair a LCD monitor?

…can not make out any displays. The monitor worked one day and not the next. I… The classic diagnosis for back light failure IS shining a light onto the tft to see if you can see anything. I…

LCD Monitor Repair No Display?

I have a sceptre komodo LCD 19 inch. The power light comes on but there is… you hear your hard drive spin. does your monitor light flicker when you turn off your computer and…

How to repair light scratches on an LCD Monitor screen?

Is there anything that will repair scratches on an LCD monitor? … You might try using cd scratch removal compound. I wouldn’t try it if your screen is matte, but on the…

LCD monitor repair? deep scratches?

…, or can you send your monitor back to the manufacturer to have that done… glass or hand it over to a manufacturer of the monitor. what you can do now is to prevent…

How do you repair a scratch on your LCD monitor?

There’s a tiny scratch (about 1 cm) on my LCD monitor for my computer. Is there a way to fix it?

How can I repair a scratch in my LCD monitor?

…that I can see clearly going across my LCD monitor. I believe it was done with… hi there..I do not want to sound stupid but this trick works. Get a wet paper tissue, do not forget to rinse it of…then apply…

How can I repair the dvi cable for my 23″ apple lcd monitor? Anyone have a diagram?

I’m familiar with cable repair and have all the tools and materials necessary… http://www.interfacebus.com/design_connector_digital_visual_interface_…

Can I repair my LCD monitor?

My 20″ Proview LCD monitor (14 months old) will flicker around or stay dark for 5… /BacklightFix/Overview.aspx for useful repair details. Not for someone with no… by something in this system otherwise. My monitor has the reverse problem at a similar…

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How good is it?
First. This ebook are easy to read and learn. Because, this ebook are full of quality photo to explain the every step.

What can i learn from this ebook?
Repair LCD monitor like a Pro! Yes, after i read this ebook, i can make sure you will love this ebook too. Because their content are straight to point, no more lots of boring theory but quality repair information we need to know!

Plus, one of the bonus report he gave are very powerful to who are repair electronic equipment like lcd monitor, laptop mainboard, printer mainboard, plasma or lcd tv mainboard and etc. This powerful tips you can’t learn from your college or even on training center! The report will show you how can find a shorted component(transistor, IC, capacitor, diode and etc) on mainboard easily and fastly! You also can use this method to find a shorted SMD type component too!

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I have a method to show you how to find out if the lcd computer monitor power supply problem or the mainboard. Just connect a car 12 volt rear light bulb to the power pack. If it light brightly the power pack is ok if it blink or dim the power pack have problem. From experience, most of the lcd screen display power supply problem are due to the failure of electrolytic capacitor in the primary and secondary section. Most of the capacitor have a high esr which cause the power supply to produce low output, blink or no power at all. Typical value electrolytic capacitor in the primary side are 47 and 100 micro farad 50 Volt and the secondary side are 1000 to 2200 micro farad 25 volt. Sometimes you can see the capacitor top casing became bulge and the sleeve that covered the capacitor casing turned into darker color.

The power section in some of the lcd screen are still using the UC3842 pwm ic. This type of ic is quite easy to find in the market compare to some power  ic which is very difficult to find such as the TEA4533AP. Another disadvantage of repairing lcd monitor power supply power pack is that the casing sometimes have been totally sealed and you have to carefully open it up otherwise you may easily break the casing.

Lcd repair for monitor or television i believed is quite the same but first you must know the principle. Once you know the principles you will know the rest. (Jestine Yong). Subscribe to our newsletter to get early info when this blog updated.

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You can find out your tft display or panel part number to see who are the manufacturer then you can order part by this manufacturer. Some of you may be need to find out that brands of notebook TFT panel part number & manufacturer. Sometime, you can know the average price of that tft or lcd display. Another best of these list are you can search the equivalents or replacement of your tft/lcd display panel! All of these information are purpose for reference only, we not responsible of these information are 100% works. You take your own risk.

TFT/LCD Panel or Display List :

• AST 900/910/950 TX26D60VC1CAB $160 cross ref LT104V3-104 SAMSUNG
• ACER Display Technology Inc. Sony FX210 & Sony pcg-fx340 Model L141X1-1A L141X1-1 XGA 12.1 TFT LCD TX31D25VC1CAD HITACHI $240 cross ref TX31D21VC1CAF MOD
• CANON 475CDS Hitachi LMG9900ZWCC 11.3 DUAL cross Hitachi LMG9901ZWCC $185
• LP133X7 (C2CC) LG 13.3 TFT DP/N 0819R Compaq 1200 12XL500 cross ref Torisan TM133XG-02L07A
• Dell Inspiron 5000 LP141XA (A1) 14.1 XGA and fits HP Omnibook 4150B
• HP Omnibook XE3-GC, LP141XA (F1CP) cross ref LP141XA (D1AP)
• LQ14X01E Maybe replaced by LQ14X03 Sharp 13.8 VGA TFT
• LQ14X01 1024×768 13,8 (35cm TFT 2×18Bit SHARP
• SHARP LQ150U1LH22 CROSS Inspiron 8000 or 8100 & Latitude C800
• AU UB141X01-2 14.1 COMPAQ 1200 Direct Cross ref UB141X02 or AU UB141X02 Compaq Presario 700US and Compaq Presario 1215US 14.1 XGA AU/UB141X01-5 HW02 HP Omnibook XE3 UB141X01 and fits Ashton Digital A900
• Compaq Model 1200 VB141X01-2 pristine condition
• 15″ SAMSUNG LT150X3-126BT3
  LM220W1-A2MN 22″ 1600 x 1024 LG Philips 180 nits 16.7M TMDS 542 x 375 x 35.3
  LC300W01-A3 30inch 1280 x 768 LG Philips 450 nits 16.7M LVDS
  SHARP 13.3 TFT LQ133X1LS20 1024*768 103PCS $email
  LQ133X1LH-63 SHARP 13.3 TFT
  TM121SV-02L01 TORISAN TFT-LCM 05K9528 fits Compaq Armada 500
  Alps LFH8P402XA
  Samsung LTN141X7-L01 14.1 LCD cross ref UTM141X001 and LP141XA fits Vaio PCG-F430 PCG-F540 + Model PGC 933A (PGC-F650)
  Samsung LTN141X7-106 or 122 fits Toshiba Satellite 185-S254 cross ref Chunghwa CLAA141XC01 and LTN141X8-L02
  Toshiba Tecra 8200 LCD Typ LTN141P1-L02, LTN141XF-L02 (Samsung)
  LTM14C433 fits Toshiba Satellite Pro 4600
  Sony pcg-sr17 LTM10C3XX Toshiba LTM10C314 +fits pcg-sr17
  Toshiba LCD LTM10C314 fits PCG-3212 and pcg-sr17k
  1MLFK890590 IBM 13in
  LQ133X1LH13 Sharp 13in
  Samsung LT150X3-124 XGA 15.1 TFT and fits Sony PCG-FX150 + PCG-FX215 + PCG-FX170 + PCG-F490 + PCG-580 + PCG-590
  Samsung 14″ LTN141P1-102 20pcs
  HITACHI TX31D72VC1CAA 12.1 TFT fits Sony Vaio PCG-R505TS and R505JL + Vaio Z505SX + Z505CR/K + Z505LSK + R505 model R505JLK
  Hitachi 13.3 TFT TX34D68VC1CAA
  TX41D56VC1CAA 16″ sony part # a8059922a fits Sony Vaio PCG-GRX670
  TX38D33VC1 Hitachi
  COMPAQ 1275 LM130SS1T611 13.3 HPA Sharp
  NL128102AC23-03 15.4 SXGA
  LG Phillips LM220W1 22 WXGA
  LG LM151X2-B2PH LM151X2 (B2PH) LG Philips 15.1TFT
  LM201U1-A1 20.1 LG 16.7M TMDS 467.8×361x32
  LG 13.3 TFT LP133X11-A2
  LG 13.3 TFT LP133X7 fits HP OmniBook XE3 Model F3775KT
  LM151X05-A3C1 15.1 LG 1024 x 768
  LM151X3B3AP 15.1
  LC151X01-A3 15.1
  LM181E05-C3 18.1
  LM181E04-B3 18.1
  LM151X3C3C 15.1
  LM171W01-B3 17.1
  LT170E2-131-T2 17
  NL10276AC30-01A 15in NEC $265

..to be continue.. subscribe to our newsletter to get early info when this blog updated.

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Last year until now, I had repaired many of this model LCD monitor. But most of the problem is no power or power on about 3 second then power cut off. Actually Dell E151FP Lcd monitor are made from Acer (Acer FP553 Chassis). Mostly, the component need to changed are same, when I first time repaired this model LCD I used about one and half hours to solve this problem. After I have these repairing experiences on dell e151fp LCD monitor, I just used about ten minutes to solve this type of symptom.

Below are the list of common defective component at the Dell E151FP LCD Monitor, Normally have the same parts are damaged, please take these useful notes.

Symptom: No Power or Power Come Up a while then no powerdell-e151fp-lcd-monitor

1) F601: 2A Fuse

2) C605= 68uf 400v (must change)

3) R615= 0.68ohm 1watt

4) Q601= SSS6N60A

5) R613= 1Kohm 1/8watt (value changed to 2.3Kohm)

6) R623= 4.7ohm 1/8watt (value changed to 7.2ohm)

7) D604= 1N4148

IC601=UC3842B

9) C707 & C703= 1000uF 16V (must change, because of bad ESR) secondary filter cap

Sometime, this model of LCD also have some others problem, like display darkness. From my last repair experience, you just need resolder the inverter part bad point and also check the cap with ESR meter. It will solve your problem. (Kent Liew: Protech2u.com)

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We send out (by email or download link) all of these service manual/schematic diagrams as a FREE service for tech engineers, technicians or electronic repairer like my self. So, they should reduce your repairing time by halve or more! Data & file formats mainly 90% on .pdf .tif .gif .jpg. Before you can download the service manual or others information, please subcribe or signup the newsletter system first.

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A faulty main board may cause no display problem in LCD Monitor. If there is a problem in the main board, it would not send a “on” (enable) signal to the soft start circuit and no voltage will flow to the inverter IC thus no waveform produce by the high voltage transformer.

In the above case, after the cover was removed, the first thing I check was the vcc (supply voltage) to the inverter IC. This model is using the famous TL1451ACN Pulse width modulation (PWM) IC-some preferred to call it as inverter IC. Pin 9 is the VCC supply input and it should have about 12 Volts when the power is “on”. Measuring the pin with my faithful digital multimeter, it reads only about 3 volts which indicates there’s a problem in the supply line. It could be components that are faulty that dragged down the line or it could be the switch mode power supply itself that don’t produce enough power.

In order to find the answer as which section is giving problem, the first clue was that the power LED indicator lit and this prove that the IC is supplying enough power to the circuit. Another clue was that the meter is registering about 16 volts at the input of the 2A fuse. Because of these clear answers, we can conclude that the switch mode power supply is working fine. You can also use a 12 volt light bulb to confirm it. You may read my other post on LCD Monitor repair articles which talks about using 12 volt light bulb for troubleshooting purposes.

I kept on asking myself, why the voltage drop to 3 volts after the fuse. Before the fuse it reads about 16 volt but after the fuse it reads only 3 volts! I didn’t suspect the fuse, because the fuse can only either yes or no and no in between. The first circuit that I checked was the start circuit but all components checked to be okay. I even desoldered the pin 9 of TL1451ACN inverter IC just to make sure it is not this IC that pulled down the voltage.

This problem really challenges my troubleshooting and repairing skill, because almost all suspected components already checked to be working. Even the start circuit transistors (C945 & A733) I direct replaced, afraid they would breakdown when under load. The only component that I didn’t check was the fuse! By using my meter placed across the fuse, instead of getting low ohms or zero ohm reading I got 1.012 Kilo ohms! I‘ve got a surprised and don’t believe that a fuse can actually go into high ohms instead of open circuit. I always thought that a fuse is either close or open circuit. A fuse with zero ohms turned into high ohm thus the 16 volts dropped to 3 volts! I’ve came across lots of this type of fuse but this is the first time a fuse changed into high resistance.

Replacing the fuse only put the DELL E152Fpb LCD Monitor back to life. The lesson learned from here is that don’t assume that a component is always in a good working condition. You have to confirm it with your meter and if you still suspect the component is giving problem, simply replace it with a known good one and retest the equipment. Semiconductors can breakdown when under full operating voltage.

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It is usually thought better to repair LCD parts than to replace them. The reasons are manifold. Monitors and terminals last over ten years. In the case of LCD screens, the lifetime is even longer. The malfunctioning of a tiny part can make a monitor redundant. If the main transformer or the tube fails, then replacing the entire TV is logical. If not, then repair is the cost-effective alternative. Terminals and monitors hold heavy metals that are potentially dangerous, so repairing is also a more environmental friendly thing to do. And, most importantly, repairing costs a lot less than the purchase of a new electronic component.

The most common failing of an LCD monitor is dimming of the backlight after substantial use. However, for about $20.00, the backlight can be replaced and the monitor restored to its former self.

Nowadays, there are highly competent, anti-reflection polarizer films available in the market. This polarizer film when applied to the LCD screen increases display contrast as well as readability. Images become sharper and clearer; the screen provides deeper colors; it allows for a wider viewing angle in bright settings; and protects LCD panels from scratches and fingerprints.

The flat panel in the LCD television makeup is the most exorbitant item to replace. In fact in some cases, it could exceed the cost of the total unit. Split or broken LCD panels obviously need replacement. Another sigh of a flawed panel are lines running the length of the panel. Still, three quarters of such panels can be repaired. (Eric Morris)

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