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Old 16th February 2013, 06:47 PM   #1
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Default Kenwood KAC-7202

Does anyone have the board location of the positve 15 volt regulator?
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Old 16th February 2013, 07:11 PM   #2
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Location: Louisiana
Q1. on the heatsink.
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Old 16th February 2013, 08:35 PM   #3
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When i try to power this amp up the power light will come on for 2 secs then shut off..

Heres what i get on the 494

Pin 1:2.54
Pin 2:0.56
Pin 3:4.63
Pin 4:0.31
Pin 5:1.48
Pin 6:3.58
Pin 7:0.00
Pin 8:13.79
Pin 9:0.00
Pin 10:0.00
Pin 11:13.79
Pin 12:13.79
Pin 13:4.94
Pin 14:4.94
Pin 15:4.94
Pin 16:0.00

Any ideas what might cause this?
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Old 16th February 2013, 09:52 PM   #4
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DC offset in one channel?
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Old 16th February 2013, 11:25 PM   #5
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Ok got the amp to power up..

Heres what i get on Q1


Leg 1:0.00
Leg 2:45.6
Leg 3:0.6

I replaced that regulator and still dont get 15 volts on the 3rd leg.. Any ideas ?

Last edited by S Merlington; 16th February 2013 at 11:37 PM.
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Old 17th February 2013, 03:18 AM   #6
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Location: Louisiana
Check R3, D3 and C4.
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Old 17th February 2013, 12:47 PM   #7
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R3 tests good.

Replaced D3

Replaced C4


Amp still doesnt produce the positive 15 volts
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Old 17th February 2013, 12:58 PM   #8
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What's the DC voltage on each end of R3?
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Old 17th February 2013, 01:44 PM   #9
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1 side:45.6

Other side:0.1
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Old 17th February 2013, 02:04 PM   #10
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Location: Louisiana
What is the resistance across D3 in the circuit?
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