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Post subject: 69 SFSR
Posted: Mon Oct 10, 2011 11:22 am
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I am looking at the bias cap and there is a very very small aluminum, (cap) maybe?? towards the front connected to a resister what is it, do I need to replace it, I have a photo but I can't seem to figure out how to post it I have a lot of photos


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Post subject: Re: 69 SFSR
Posted: Mon Oct 10, 2011 12:17 pm
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Joined: Wed Mar 31, 2010 12:48 am
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It's an 80mfd/70v isolation cap -- an integral part of the biasing circuit. I would replace it if it hasn't been done so recently. Take note of the reverse polarity as depicted on the schematic. This is the correct configuration.

HTH

Arjay

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"Here's why reliability is job one: A great sounding amp that breaks down goes from being a favorite piece of gear to a useless piece of crap in less time than it takes to read this sentence." -- BRUCE ZINKY


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