Recent content by Kubik

You can check the ground planes on the burn-in connector (the pads near the SCSI connector). On my board, there's open circuit between pads 10 and 11 (digital / analog ground).

That's what confuses me, it's not supposed to work unless someone modded the board by connecting both grounds on the board itself. Anyway, I put the no-longer-squealing board into the case, turned it on... and it started to squeal again. I took the power supply out and bent the fingers of the...

Folks, I wonder if someone could shed some light on this. (TLDR - LCII sound only works with board in case, not with board sitting on the desk) I have an LCII that basically works but squeals a little. Originally, the sound was pretty bad, but I cleaned the cap fluid stuff and the sound became...

So I have recapped some caps, especially the tiny one on the high side, and now I am getting ticking noises. Also, the voltage on the controller doesn't seem to be quite right, there's a 20V zener diode, but the voltage is some 13,5V only, so it looks like the controller isn't getting the...

I have a completely dead DynaComp one. The copper was corroded under one low side capacitor, so I have removed that one, cleaned up and I am waiting for the replacement, but when looking up for some more advices, I found this topic, checked the tiny cap on the high side - and yeah, it looked...