Amp turns on but no output

crolle400 · 9th April 2012, 03:17 PM

I have an old school 2000watt 2-channel power acoustik amp, its been working fine before but i noticed one of the channels stopped working.. so then i bridged the sub then one day while playing music i hear a 'pop' sound and the subs stopped playing. I had the subs tested and they work fine on another amp i have but my power acoustik is not giving any output thru subs.. my immediate thought was a blown resistor maybe near the speaker output terminals(still dont know)... after observing the inside of the amp i noticed 2 loose 4700mf caps which i soldered back but still no luck.. i also noticed that the amps power output measures power wen speakers connected to right channel but still no sound and wen connected in bridge mode output power drops to 0 immediately... help please!!!!??! This amp is definitely worth repair.

Btw i tested mosfets, transistors and ic's all seem to be in good condition...

carlosg815 · 9th April 2012, 07:40 PM

I had a similar problem in my thread. I noticed the voltage at the amp when hooked up was only 4-6 volts. I was advised that the fuse at the battery could be bad so I replaced it and it is good as new. Perhaps your problem is similar.

Perry Babin · 9th April 2012, 10:43 PM

Post a photo of the inside of the amp.

9th April 2012, 03:17 PM	#1
crolle400 diyAudio Member Join Date: Apr 2012	Amp turns on but no output I have an old school 2000watt 2-channel power acoustik amp, its been working fine before but i noticed one of the channels stopped working.. so then i bridged the sub then one day while playing music i hear a 'pop' sound and the subs stopped playing. I had the subs tested and they work fine on another amp i have but my power acoustik is not giving any output thru subs.. my immediate thought was a blown resistor maybe near the speaker output terminals(still dont know)... after observing the inside of the amp i noticed 2 loose 4700mf caps which i soldered back but still no luck.. i also noticed that the amps power output measures power wen speakers connected to right channel but still no sound and wen connected in bridge mode output power drops to 0 immediately... help please!!!!??! This amp is definitely worth repair. Btw i tested mosfets, transistors and ic's all seem to be in good condition...

9th April 2012, 10:43 PM	#3
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Post a photo of the inside of the amp. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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9th April 2012, 07:40 PM	#2
carlosg815 diyAudio Member Join Date: Apr 2012	I had a similar problem in my thread. I noticed the voltage at the amp when hooked up was only 4-6 volts. I was advised that the fuse at the battery could be bad so I replaced it and it is good as new. Perhaps your problem is similar.