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-   -   Can you fry a gainclone ? (http://www.diyaudio.com/forums/chip-amps/92445-can-you-fry-gainclone.html)

Buhl 18th December 2006 06:12 PM

Can you fry a gainclone ?
 
Thats the question im asking my self - I had a 3875 along with some JBL control ones for a nice weekend in a summerhouse, where one of the first albums from an austrailian rock group heated up the case considerly. I noticed when one channel clearly was distorting audible. I turned it down, and it disserpered. When cranked up again short after, it was not long before it came again. Then a loud buzzing sound, and I flipped the switch. Now at home, I measure negative rail voltage (-26 volts) on the output - and the positive capacitor on the faulty channel does not decharge, when the power is shut off - as if the chip does not drain its positive rail - can it really be toasted ?
I thought it was protected from all sorts of overload ??

Cheers !
Hans

Nordic 18th December 2006 06:50 PM

No, its not a guaranteed failsafe.
Thermal management is literaly critical.
Also compare the two speakers on the good channel, you may have damaged one...


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