A8002t help

audiobahnkid592 · 11th December 2008, 05:50 PM

i have this amp blown outputs and a blown K 408 A1266 small transistor. its board designation is QM1 how would this blow and what else am i going to have to look at?

Perry Babin · 11th December 2008, 11:19 PM

That's part of the muting circuit. If I'm not mistaken, the center leg goes to DM1/2 (or QA1, QB1) near the preamp end of the board. You should check the muting transistors. I think they should be QA1 and QB1 but I'm not sure.

audiobahnkid592 · 12th December 2008, 01:14 AM

perry thanks but this thing is toast i found mulitple transistors burned up all over the board after close inspection so this is a paper weight now

11th December 2008, 05:50 PM	#1
audiobahnkid592 diyAudio Member Join Date: Mar 2007	A8002t help i have this amp blown outputs and a blown K 408 A1266 small transistor. its board designation is QM1 how would this blow and what else am i going to have to look at?

11th December 2008, 11:19 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	That's part of the muting circuit. If I'm not mistaken, the center leg goes to DM1/2 (or QA1, QB1) near the preamp end of the board. You should check the muting transistors. I think they should be QA1 and QB1 but I'm not sure. __________________ 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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12th December 2008, 01:14 AM	#3
audiobahnkid592 diyAudio Member Join Date: Mar 2007	perry thanks but this thing is toast i found mulitple transistors burned up all over the board after close inspection so this is a paper weight now

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