No mem expainsion.. Rev 5 mobo. I've pressed down on all the chips. I have a PLCC extractor so I'll remove agnus and reseat it. Luckily a local Amiga group has either a replacement A500 for me or chips. I'm hoping the soldered ram isnt bad. Also when sitting at the KS screen, keyboard doesnt work, only the caps light is blinking twice. Maybe the chip ram is bad?
Do you have another power supply at disposal? You see, those voltages must be right. I had one supply which caused blurry image on any Amiga I tried, another bad brick was causing system crashes randomly, so one possibility here.