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Request assistance troubleshooting A/N P2SE

I am hoping someone can point me in the right direction here.... my power amp has developed an odd and intermittent problem.

The amp will perform perfectly for an unspecified period after start up (20 min - 80 min?) and then suddenly develops a loud hum in both channels, when I say loud it is sufficient to ruin the music at moderate listening levels...

The hum does not respond to the preamp volume control nor the source selector, powering down the preamp does not eliminate the hum. Suprisingly, turning the amp of for a couple of minutes and then restarting, the hum disappears!

I would be grateful for any leads in isolating this problem.

thanks,

Ken


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Topic - Request assistance troubleshooting A/N P2SE - Ken Arrow 16:49:43 01/16/05 (1)


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