I recently acquired a nice Amiga 3000 Desktop. I first had it checked and recapped. There it was noticed that R403 or R404 was burnt. So the resistor was replaced. However, after turning on the Amiga again the resistor burnt again straight away. The guy who did the fixing is very knowledgable on Amigas but couldn't find the cause.
I only quickly checked sound with the boing ball demo. It works, it might be a bit less clear than I'm used to and there seems to be some noisy echo. But that can all be due to bad cabling outside of the Amiga, or due to interference with other equipment since the box was open and other computers were running.
Maybe someone here knows what could be the cause of this? Thanks in advance!
I cant quite tell from the pic, but is the cap c491? installed with its polarity wrong?
The reason i ask is the trace leads to the burnt resistor.
barring that follow it on the schematic and board and see where it leads.. I assume the resistors were the proper values and ratings?
Without more info, i can only guess something is shorted or as blizz said.
is there any chance the plastic is missing under the motherboard between it and the case and the lead is shorting to the case?
