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LCD Monitor Backlight

My monitor is an LG L1932TQ-BF. as I was reading the screen the brightness flickered and the screen went dark. If I power down and then back up, I get a very brief well lit screen with "normal" text showing. It lasts less than a second. The power light comes on normally and changes color when a video signal is there.

I have not had the need to get into the guts of an LCD monitor.

What sort of precautions are to be observed when replacing the light(s)?

I have fixed almost everything else electronic in the past. I have done CRT TVs, PC's, Microwaves etc. What I need is a road map before I open it up. Are there any good sites with directions and are there any preferred suppliers of replacements.

I know I could just Google this but it is always better to get advice from someone with hands on experience.

I could run out and get a new monitor, but as a retiree I have more time than money.

Charlie

Reply to
Charlie
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Good source of parts and cross references here

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and some "how to" stuff here

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Good luck with it

Arfa

Reply to
Arfa Daily

Charlie,

While I'm no expert on monitor repairs, from what I've read the problem is more likely to be with the lamp power supply rather than the lamp(s) themselves. They are often some sort of switch mode supply on a small, separate board that the lamps connect to. If you are lucky, you'll have bad capacitors, if less lucks, a bad coil or transformer.

Regards, Tim Schwartz Bristol Electronics

Reply to
Tim Schwartz

Yep, a valid point. Even so, if that proves to be the case, and it's not something readily fixable, the same parts site that I gave the links for, can supply replacement inverter boards to suit most monitors.

Arfa

Reply to
Arfa Daily

First of all, thanks for the responses. As I started getting educated I realized that the inverter could likely be the culprit. While the tubes aren't too bad the inverters turn out to be a relatively expensive item. Then there is the problem of diagnosing which part had really failed.

Secondly, I started pulling out the paperwork from with receipts, warranty information etc.

The GOOD NEWS.

The backlight warranty is 3 years and does not expire until 12 days from now. A replacement, albeit refurbished monitor, will be shipped to me as swap with the bad unit. How's that for cutting it close? The more likely scenario is that the warranty ended last week.

Thanks again.

Charlie

Reply to
Charlie

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