So first of all I just found this forum, and am so pleased it exists. I was given this monitor by a friend about a year ago, and I just recently found the time to attempt repairing it.
At first, the screen would turn on and worked for maybe 20 minutes before it started flickering. Then it would only turn on for maybe 30 seconds and then blink for 10 seconds or so, and go black. A flashlight test showed the image was still being displayed. The problem seemed to only get worse each time I tried to turn it on. A few months ago, I got it to work for about 25 minutes before the flickering showed up. Then like before it only got worse and worse, till it wouldn't light up at all.
I randomly found some info about capacitors going bad, and causing this exact problem. So I found the correct caps in a kit on ebay, even though I saw no bulging caps, and did the replacement.
At first glance it seemed to have worked. But after a few minutes it began blinking, and went dark. Today, after fiddling with the board a bit, wiggling and such, It seemed to have improved the problem. I was able to get it to turn on and stay lit for 10 minutes, before it started to blink. It seemed to randomly start blinking, but it didn't seem to just get worse. It would blink for a minute or two and then seem fine for a few minutes.
However after leaving it on for 30 minutes, it went black, and now won't come on at all. If replacing the caps didn't help, what else should I try? I have a multimeter and test light. I still have the old caps that I guess were not bad at all.
Here are a couple images of the power board. Could it be a problem with the lamps themselves or maybe the other board(display board??)?
At first, the screen would turn on and worked for maybe 20 minutes before it started flickering. Then it would only turn on for maybe 30 seconds and then blink for 10 seconds or so, and go black. A flashlight test showed the image was still being displayed. The problem seemed to only get worse each time I tried to turn it on. A few months ago, I got it to work for about 25 minutes before the flickering showed up. Then like before it only got worse and worse, till it wouldn't light up at all.
I randomly found some info about capacitors going bad, and causing this exact problem. So I found the correct caps in a kit on ebay, even though I saw no bulging caps, and did the replacement.
At first glance it seemed to have worked. But after a few minutes it began blinking, and went dark. Today, after fiddling with the board a bit, wiggling and such, It seemed to have improved the problem. I was able to get it to turn on and stay lit for 10 minutes, before it started to blink. It seemed to randomly start blinking, but it didn't seem to just get worse. It would blink for a minute or two and then seem fine for a few minutes.
However after leaving it on for 30 minutes, it went black, and now won't come on at all. If replacing the caps didn't help, what else should I try? I have a multimeter and test light. I still have the old caps that I guess were not bad at all.
Here are a couple images of the power board. Could it be a problem with the lamps themselves or maybe the other board(display board??)?
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