Directed D800

[mike49504]

Im working on this amp when i recied the amp in for repair it was stuck in proctection mode I resoldered the rectifiers in it and checked all the outputs and power supply fets all tested good Now the amp wont power up at all Any ideas?

[Perry Babin]

Can you post a photo of the inside of the amp?

[mike49504]

Heres the board out of the sink

[Perry Babin]

Post the voltages on the power supply IC.

[mike49504]

Kia494
1:0
2:0
3:0
4:0
5:0
6:0
7:0
8:13.91
9:0
10:0
11:13.81
12:0
13:0
14:0
15:0
16:0

[Perry Babin]

Pin 12 doesn't have any voltage. Follow the circuit for pin 12 back to the next transistor. It's likely open.

[mike49504]

Ok got the amp to power up and produce audio but its very distorted.

I have both + - rail voltages at the outputs and have + - 15 on all opamps.

I replaced the switches and pots.

I have 0.93 volts across the emitter resistors Amps outputs is very distorted Any ideas?

[Perry Babin]

Post a photo of the front of the driver board.

[mike49504]

Perry,

It had bad outputs replaced them and amp works perfect thanks again