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Old 15th December 2004, 10:28 PM   #1
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Default AA1800 bias resistors

Does anyone know which bias resistors go bad in the Heath AA1800 amp? This makes the channel output level vary. It looks like the two 3.3k 2w resistors. Are there any others that go bad?
Thanks Ed
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Old 16th December 2004, 07:56 AM   #2
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Default If you have the schematic, will be easier to help you

Try to put, at least a partial schematic, in special the bias portion.


Full throotle amplifier manufacturing; https://www.youtube.com/watch?v=iEXaSSlMEBg, Sample Dx Classic https://www.youtube.com/watch?v=fVvFrwl92RU
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Old 20th January 2005, 03:21 PM   #3
rrcrain is offline rrcrain  United States
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Any of the carbon resistors can go bad, but none have to date in the two amps I own. Perhaps I'm just luck so far. I do need to start searching for replacement electrolytics in the amsp in any event. Those puppies have a limited lifetime at best and it's best to replace them before they fail.
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