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Kenwood Audio Amp KA-5040R - remains in standby

I have a kenwood audio amp that remains in the standby mode when first powered up. If I power down/up several times then it will eventually go in normal mode and work ok.....Once i power it down and try and repower it in a few hrs same thing...i have to power it up/down several times before the speakers will kick in.....but when they do it works normally. It will continue to work normally even on power up/downs but if I turn power off for a long duration is when the trouble starts again.

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Hi, Lost sole, i HOPE YOU FIND IT

Minwhile, when it works to know if you have a cold solder joint, hit the unit on the top or buttom to see if it stop working, mostlikly it will,
To fix this you must unplug the unit open the bottom cover, and solder joint that look broken off, moslity on the output stage or power supply.
What I think happening is when the unit heat's up the joint expand and doesn't do contact no more.

Another problem that this may be is a bad power supply, cap's, this can be check by freezing them to see if the unit starts again.

This is little trick of the trade, I hope this help

What About Bob

Posted on Feb 12, 2008

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http://www.auctiva.com/hostedimages/showimage.aspx?gid=108365&ppid=1122&image=404270323&images=404269872,404269931,404269984,404270049,404270137,404270323&formats=0,0,0,0,0,0&format=0

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