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Old 07-12-2019, 09:46 AM   #61
stj
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Default Re: Help with dead Commodore 1802

so a refresh of the facts,
with the coil out and just the psu & audio sections running your still burning resistors??
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Old 07-13-2019, 04:32 AM   #62
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Default Re: Help with dead Commodore 1802

Quote:
Originally Posted by stj View Post
so a refresh of the facts,
with the coil out and just the psu & audio sections running your still burning resistors??
Yes thats right. Ive done as was said and checked all componnets in the PSU area for shorts incuding ceramics caps ansd cant find anything shorted. I wonder is there a way we can also isolate the audio section so we can just make sure its in the audio section.
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Old 07-14-2019, 02:55 PM   #63
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Default Re: Help with dead Commodore 1802

you can lift L808 to isolate the audio stage.

im starting to wonder if the transformer could be breaking down, but few people have the equipment to check one,
(although i do)
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Old 07-19-2019, 01:48 PM   #64
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Default Re: Help with dead Commodore 1802

Please anyone how to I isolate everything except the PSU to trace this fault..
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Old 07-19-2019, 03:16 PM   #65
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Default Re: Help with dead Commodore 1802

desolder coil L808
then you only have the psu running.
the str device could be bad btw, you cant test those with a meter properly.
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