Problem With Denon Avr 3200

ostie01 · 18th July 2005, 02:55 AM

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.

K-amps · 18th July 2005, 08:31 AM

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...

anatech · 18th July 2005, 12:53 PM

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

K-amps · 18th July 2005, 12:57 PM

Me,

I dont load up my AVR 3805 with speakers... I let the power amps take that abuse.

Chastech · 21st July 2005, 08:38 PM

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.

18th July 2005, 02:55 AM	#1
ostie01 diyAudio Member Join Date: Mar 2005 Location: quebec	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.

21st July 2005, 08:38 PM	#5
Chastech diyAudio Member Join Date: Jul 2005 Location: Arlington, Tx	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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18th July 2005, 08:31 AM	#2
K-amps diyAudio Member Join Date: Nov 2003 Location: Indiana	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...

18th July 2005, 12:53 PM	#3
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	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

18th July 2005, 12:57 PM	#4
K-amps diyAudio Member Join Date: Nov 2003 Location: Indiana	Me, I dont load up my AVR 3805 with speakers... I let the power amps take that abuse.