Kenwood KAC-9103D

[mike49504]

Amp wont power up. Heres what i have on the 494

1:0
2:0.05
3:0.05
4:0.03
5:0.03
6:0
7:0.03
8:1.59
9:0
10:0
11:1.59
12:1.59
13:0.82
14:0.82
15:0.82
16:0

Any ideas on where to begin?

[Perry Babin]

If the emitters of Q1 and Q2 aren't at 0v. Look for an open ground trace.

[mike49504]

where are Q! and Q2 located cant seem to find them?

[Perry Babin]

They're SMD transistors near Q3 (non-SMD).

[mike49504]

In the pic Q3 is circled are theese Q1 and Q2 with arrows pointing to them?

[Perry Babin]

Yes. Email me if you need the service manual.

[mike49504]

Ok im going by top pin as leg1.

On the first transistor i have

1:0
2:0.72
3:0

Second transistor

1:0.72
2:0
3:0

[Perry Babin]

Post the voltages with the circuit board designation for the base, collector and emitter of both SMD transistors and Q3.

See attached.

[mike49504]

Q1

Collector:0.72
Base:0
Emitter:0

Q2

Collector:0
Base:0.72
Emitter:0


Q3:

Base:1.59
Collector:1.59
Emitter:13.94

[Perry Babin]

Q3 is defective.