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Out of curiosity, what are your concerns? I left it up and running for a few hours yesterday and a few hours today and it's still been rock solid. So far the only time things get questionable is when you put a CD in, it appears the screen distorts ever so slightly as the disc is read, but that...

Thanks to your post, I FIXED THE ISSUE! Based on your post I had two theories: A. That filter cap is actually bad and causing the input power to the whole board to be messy. B. That melted looking pot that controls the 5v and 12v outputs is dirty and causing issues on those ends. I was able...

I’m fairly certain the issue is with the flyback. The noise i can hear coming out of the back when it distorts sounds like it is coming from the flyback transformer, although perhaps the issue is being caused by whatever is feeding the transformer. Unfortunately it seems like finding these...

Well today I replaced all but one capacitor on the analog board. Absolutely no change to the issue. The big filter capacitor was the one I didn’t change out as my soldering iron couldn’t get hot enough to melt the leads, but from what I’ve read online they don’t usually go bad anyways.  As i...

It’s probably a long shot but do you know if there’s any schematics out there for the LC 520 analog board? It’s a little hard to troubleshoot what’s going where without em. I pulled the analog board out today and started testing capacitors with my ESR meter. Out of the 10 I’ve tested so far...

So I did reseat the ram, logic board, and analog board sadly with no luck. I set the brightness as low as it would go and it didn’t change anything (and neither did maxing out the brightness, not sure if that means anything?). Also tried another circuit in the house and no dice with that either...

Hi all! I picked up an LC 520 off ebay a few weeks ago. I cleaned and re-capped the motherboard and to my surprise it booted up just fine. However, the screen will flicker and distort as it runs. A couple times it has flickered and gone to black, which made me have to reboot the machine...