Adcom GFA 535 Clicking on Power Up and Down

YammerBoy · 14th June 2009, 03:54 PM

First post here, hope someone can help. I've read bit about this amp and finaly got one a couple of days ago. Hooked it up yesterday and ran it for a few hours. Then....I powered down and heard a click....powered back up and heard the click again. I measured the DC at the "B" speakers.......right channel 6mv and left channel -24mv. Soncally it sounds very nice. Any ideas on the problem?? Thanks

YammerBoy · 14th June 2009, 10:12 PM

UPDATE******I disconnected the preamp and ran the dc offset again. Right channel wa -10.6mv, Left channel was -40mv. After the unit warmed up I tried shutting down and no click...powered up again no click. Only after the pilot light goes out (main caps discharged...lamp must be on dc circuit) on shutdown do I get the click on restart.

14th June 2009, 03:54 PM	#1
YammerBoy diyAudio Member Join Date: Dec 2007	Adcom GFA 535 Clicking on Power Up and Down First post here, hope someone can help. I've read bit about this amp and finaly got one a couple of days ago. Hooked it up yesterday and ran it for a few hours. Then....I powered down and heard a click....powered back up and heard the click again. I measured the DC at the "B" speakers.......right channel 6mv and left channel -24mv. Soncally it sounds very nice. Any ideas on the problem?? Thanks

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14th June 2009, 10:12 PM	#2
YammerBoy diyAudio Member Join Date: Dec 2007	UPDATE******I disconnected the preamp and ran the dc offset again. Right channel wa -10.6mv, Left channel was -40mv. After the unit warmed up I tried shutting down and no click...powered up again no click. Only after the pilot light goes out (main caps discharged...lamp must be on dc circuit) on shutdown do I get the click on restart.

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