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How to Troubleshoot LCD Monitor – Hard-Hitting Troubleshooting Tips for Two Classic LCD Monitor Problems

If you want to know how to troubleshoot LCD monitor, then read on! I have here some troubleshooting strategies which I use on a day-to-day basis.

You know, I get a lot of defective monitors sent to my workshop and most of them have similar problems…The "classic problems" I call it!

Here are a couple of classic LCD monitor issues…

(A) No power.

(B) Short-lived display.  

So, I'm going to provide some tips on how to troubleshoot LCD monitors that have been afflicted with these classic problems. And please note that due to limited space, these tips can only be presented in text exclusive format.

Therefore, if you're a visual learner and you need some step-by-step photo instructions, then you may click here for a detailed pictorial manual.

It contains plenty of photo instructions for troubleshooting and fixing an array of LCD monitor conditions.

Alright having said that, let's tackle these classic problems right away!

How to troubleshoot LCD monitor with no power condition:

The number one thing I would do is analyze the entire inverter and power section. I would make sure that there are no leaking or oozing capacitors. In many cases, the problem is often caused by faulty electrolytic capacitors alone.

But it's a good idea to view the main section of the power side in case there are any burned up or broken components, faulty solder connections, among other things.

Another thing I would always do is perform a vital components check-up procedure. I would take out my flyback tester to test the switch mode power supply main winding.  

Aside from the SMPS main winding, other vital components that have to be tested are the fuse, the power FET, and diodes (secondary).

How to troubleshoot LCD monitor with short-lived display condition:

For this condition, I would first try to isolate the problem. The objective is to determine whether the main board or inverter is the problem factor. The process is simple…

First, I would make sure that after the screen goes off, the inverter IC gets the supply voltage. If supply voltage flow is present, then you better get your testing gear ready and start checking the components situated in the inverter board!

You know, you can quickly and easily learn how to troubleshoot LCD monitors by downloading a 200 page photo-oriented instructional service manual. To download one, just click over to this link: http://www.howtorepairlcdmonitor.info

Full download details can be obtained via that site.

About the Author

Rob Ethrington

Black screen, Hp Pavilion dv1000 back light LCD inverter change