Kenwood KAC 7202

mike49504 · 25th February 2011, 08:26 PM

I replaced the outputs in the left channel and fixed an open trace.

I also cleaned all switches in this amp.

Left channel only works in low pass mode .

Any ideas on what to check?

Perry Babin · 25th February 2011, 09:25 PM

o you have audio on pins 1 and 7 of IC1 on the preamp board?

mike49504 · 25th February 2011, 09:34 PM

I have audio on PIN 1 But nothing on PIN 7

Perry Babin · 25th February 2011, 10:02 PM

Pins 3 and 5?

mike49504 · 25th February 2011, 10:27 PM

I have audio on Pin 3 But nothing on pin 5

Perry Babin · 25th February 2011, 10:42 PM

Do pins 5, 6 and 7 all have ~0.0v on them?

mike49504 · 25th February 2011, 10:47 PM

Yes

Perry Babin · 25th February 2011, 10:52 PM

Do you have audio on either terminal of C103?

mike49504 · 25th February 2011, 10:54 PM

No

Perry Babin · 25th February 2011, 10:58 PM

Is there audio on W21 (wire jumper)?

25th February 2011, 08:26 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Kenwood KAC 7202 I replaced the outputs in the left channel and fixed an open trace. I also cleaned all switches in this amp. Left channel only works in low pass mode . Any ideas on what to check?

25th February 2011, 09:25 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	o you have audio on pins 1 and 7 of IC1 on the preamp board? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

25th February 2011, 10:02 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Pins 3 and 5? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

25th February 2011, 10:42 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do pins 5, 6 and 7 all have ~0.0v on them? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

25th February 2011, 10:52 PM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you have audio on either terminal of C103? __________________ 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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25th February 2011, 09:34 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	I have audio on PIN 1 But nothing on PIN 7

25th February 2011, 10:27 PM	#5
mike49504 diyAudio Member Join Date: Sep 2006	I have audio on Pin 3 But nothing on pin 5

25th February 2011, 10:47 PM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Yes

25th February 2011, 10:54 PM	#9
mike49504 diyAudio Member Join Date: Sep 2006	No

25th February 2011, 10:58 PM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Is there audio on W21 (wire jumper)? __________________ 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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