MrFahrenheit
Well-known member
I received an LC 475 to recap. I’ve recapped like 100 boards but I haven’t encountered this issue nor do I have any sort of scope to diagnose it.
The white signal is being output as red. Right from switch on. The on-board RAM also isn’t being recognized.
It came to me as needing recap because it had no video output. It was missing the PRAM battery (which means it often won’t work anyways), and the factory caps were leaking quite bad. After I removed the caps I noticed significant leakage at the pads but it cleaned up quite well.
A few of the ICs were corroded with green. I thoroughly cleaned with IPA99 and a toothbrush.
I have swapped out VRAM. I have reset PRAM. I have changed monitor resolutions and settings to gray and black and white. No change. It appears to function in every other way.
I think the video issue is also related to onboard RAM not working.
Thoughts?
The white signal is being output as red. Right from switch on. The on-board RAM also isn’t being recognized.
It came to me as needing recap because it had no video output. It was missing the PRAM battery (which means it often won’t work anyways), and the factory caps were leaking quite bad. After I removed the caps I noticed significant leakage at the pads but it cleaned up quite well.
A few of the ICs were corroded with green. I thoroughly cleaned with IPA99 and a toothbrush.
I have swapped out VRAM. I have reset PRAM. I have changed monitor resolutions and settings to gray and black and white. No change. It appears to function in every other way.
I think the video issue is also related to onboard RAM not working.
Thoughts?