amp problem

licona4044 · 27th March 2011, 10:10 PM

i have a boss dd3600 amp about a couple of days ago i noticed while i was listening to music the amp would cut off and go to protection mode and then go back to normal untill yesterday it just stayed in protection mode i checked the speaker wires they werent making any contact i checked the power,ground and remote wires they werent makin any contact at all i checked all the fuses none of them are burned out at all also i didnt get the smell of like burned at all but somehow when i connect a subwoofer on it it the subwoofer just moves.

so can anyone give me suggestions or help on how to fix this amp? i have a video uploaded so you can see the problem that im having better heres the link below..

YouTube - amp problem

Perry Babin · 27th March 2011, 10:35 PM

It likely has shorted output transistors.

licona4044 · 29th March 2011, 02:51 AM

can that be fixed?

Perry Babin · 29th March 2011, 03:59 AM

It can likely be repaired. Can you post a good quality photo of the inside of the amp?

licona4044 · 31st March 2011, 01:43 AM

yea i can do that let me take a pic of it and then ill post it

amptech · 15th April 2011, 11:00 PM

test the out put transistors for leakage...short circuit...dry joints on the solder side...

AKHeathen · 16th April 2011, 06:21 AM

yes, that looks like shorting in the ouput sections, likely one, or more transistors. the pulsing should be from the amps protection trying to keep it from shorting out the power supply section, and cooking the sub. don't hook the sub back up, or it can slowly cook the coil

27th March 2011, 10:10 PM	#1
licona4044 diyAudio Member Join Date: Mar 2011	amp problem i have a boss dd3600 amp about a couple of days ago i noticed while i was listening to music the amp would cut off and go to protection mode and then go back to normal untill yesterday it just stayed in protection mode i checked the speaker wires they werent making any contact i checked the power,ground and remote wires they werent makin any contact at all i checked all the fuses none of them are burned out at all also i didnt get the smell of like burned at all but somehow when i connect a subwoofer on it it the subwoofer just moves. so can anyone give me suggestions or help on how to fix this amp? i have a video uploaded so you can see the problem that im having better heres the link below.. YouTube - amp problem

27th March 2011, 10:35 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It likely has shorted output transistors. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

29th March 2011, 03:59 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It can likely be repaired. Can you post a good quality photo of the inside of the amp? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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29th March 2011, 02:51 AM	#3
licona4044 diyAudio Member Join Date: Mar 2011	can that be fixed?

31st March 2011, 01:43 AM	#5
licona4044 diyAudio Member Join Date: Mar 2011	yea i can do that let me take a pic of it and then ill post it

15th April 2011, 11:00 PM	#6
amptech diyAudio Member Join Date: Jan 2009 Location: Glasgow	test the out put transistors for leakage...short circuit...dry joints on the solder side...

16th April 2011, 06:21 AM	#7
AKHeathen diyAudio Member Join Date: Apr 2011 Location: Anchorage AK	yes, that looks like shorting in the ouput sections, likely one, or more transistors. the pulsing should be from the amps protection trying to keep it from shorting out the power supply section, and cooking the sub. don't hook the sub back up, or it can slowly cook the coil

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