Hello, all!
I've an older LCD monitor that's being bad - I hope you can help me to figure out where I should look next towards fixing it (if I can!).
The situation:
-The screen works fine for 3-15 seconds after powering it on and then it goes black. The status light on the front remains blue (it's normal "all-is-good state") so I assume the issue is backlight related.
-Taking the screen apart, there were three bulging caps on the power board which I replaced, to no avail. If nobody has any better ideas, my next step is to replace the remaining caps in that area (there are 8 total).
-There is a slight hissing sound when the backlight starts up. It lasts for just a couple of seconds and peters off (sounds a lot like a hard disk powering down, except much quieter). Very occasionally, the hissing will increase in volume and the screen will flicker at the same time. However, the screen goes black after hissing has ceased. If I had to guess, the hissing is coming from the power supply board.
-When the screen is not black, there is a slight shimmer.
For pictures of the board, see this thread: https://www.badcaps.net/forum/showthread.php?t=11757
For what it's worth, I took the same voltage measurements as the OP of that thread and got the same values.
Thoughts? Let me know if you think pictures or anything would help...
I've an older LCD monitor that's being bad - I hope you can help me to figure out where I should look next towards fixing it (if I can!).
The situation:
-The screen works fine for 3-15 seconds after powering it on and then it goes black. The status light on the front remains blue (it's normal "all-is-good state") so I assume the issue is backlight related.
-Taking the screen apart, there were three bulging caps on the power board which I replaced, to no avail. If nobody has any better ideas, my next step is to replace the remaining caps in that area (there are 8 total).
-There is a slight hissing sound when the backlight starts up. It lasts for just a couple of seconds and peters off (sounds a lot like a hard disk powering down, except much quieter). Very occasionally, the hissing will increase in volume and the screen will flicker at the same time. However, the screen goes black after hissing has ceased. If I had to guess, the hissing is coming from the power supply board.
-When the screen is not black, there is a slight shimmer.
For pictures of the board, see this thread: https://www.badcaps.net/forum/showthread.php?t=11757
For what it's worth, I took the same voltage measurements as the OP of that thread and got the same values.
Thoughts? Let me know if you think pictures or anything would help...
I bought some stuff to try to repair it and learn as many things as possible about computer repairs but nothing worked so far. When the black screen appeared, my legion 5 pro was connected to my external monitor...
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