Re: Help with dead Commodore 1802
I would replace the caps, They are about the only parts that will deteriorate overtime, This is a crude switching circuit and if it doesn't operate properly it won't work.
I just repaired a monitor power supply that would turn on and off about 10 times before it would stay on. The power supply startup cap was a 22µf/50v. It's capacity checked 21.5µf. However the scope showed about 3~5v of high frequency ripple on it. replaced it and the power supply was working fine.
C806: c=223nf = 0.22µf. On the schematic it looks like 2.2µf/160v
I would replace the caps, They are about the only parts that will deteriorate overtime, This is a crude switching circuit and if it doesn't operate properly it won't work.
I just repaired a monitor power supply that would turn on and off about 10 times before it would stay on. The power supply startup cap was a 22µf/50v. It's capacity checked 21.5µf. However the scope showed about 3~5v of high frequency ripple on it. replaced it and the power supply was working fine.
C806: c=223nf = 0.22µf. On the schematic it looks like 2.2µf/160v
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