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-   -   AA1800 bias resistors (http://www.diyaudio.com/forums/solid-state/47860-aa1800-bias-resistors.html)

eds65gto 15th December 2004 11:28 PM

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

destroyer X 16th December 2004 08:56 AM

If you have the schematic, will be easier to help you
 
Try to put, at least a partial schematic, in special the bias portion.

regards,

Carlos

rrcrain 20th January 2005 04:21 PM

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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