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Old 18th July 2005, 02:55 AM   #1
ostie01 is offline ostie01  Canada
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Default Problem With Denon Avr 3200

I HAVE A DENON AVR 3200 HAVING A PROBLEM.AT LOW VOLUME IT PLAY WELL . AS SOON AS I TURN UP THE VOLUME ,MAYBE HALF WAY,
IT TURN OFF AS THE PROTECTION SEE SOMETHING WRONG.i HAVE CHANGED SOMES TRANSISTORS THAT WERE BAD, NOW IT'S TURN ON ,BUT ONLY AT LOWER VOLUME. WOULD APPRECIATE IF SOMEONE
COULD HELP ME. CAN'T FIND SHEMATIC ANYWHERE. THANKS.
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Old 18th July 2005, 08:31 AM   #2
K-amps is offline K-amps  United States
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Not sure this will help, but disengage your speakers... seems to me the load may be too low for the AVR.

Also measure the DC offset...
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Old 18th July 2005, 12:53 PM   #3
anatech is offline anatech  Canada
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You can purchase a service manual from Denon Canada in Markham, Ontario. (800) 263-1692, listen to the menu. The manuals should not be that expensive and you get all the information.

It does sound like the load impedance was too low, plus you can run into clipping anywhere from half volume to about 3/4 volume. You also need to provide really good ventillation with multichannel amps. I'd leave at least 4" above your receiver, more if you can.

-Chris
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Old 18th July 2005, 12:57 PM   #4
K-amps is offline K-amps  United States
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Me,

I dont load up my AVR 3805 with speakers... I let the power amps take that abuse.
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Old 21st July 2005, 08:38 PM   #5
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Default AVR3200 going into protection

If you remove the load and the same symptom persists, turn the unit off and measure across the speaker terminals one pair at a time with an DVM set on the low ohms range. If you measure a very low value, check the caps C652 and C656 across the front speaker terminals. I have seen these caps short and cause this symptom.
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