Hifonics Gen X zeus

[mike49504]

I got this amp back . I dont know what the guy did to it.

When i got the amp back all of the power supply fets were shorted.

I replaced the fets and drivers gate resistors checked fine.

Now the amp wont power up. Here the reading i have.

TL494
1:0
2:0
3:0
4:0
5:0
6:0
7:0
8:13.92
9:0
10:0
11:13.92
12:0.71
13:0
14:0
15:0
16:12.77

LM324
1:0
2:0
3:0
4:0.71
5:0.20
6:2.53
7:.22
8:0
9:.95
10:1.93
11:0
12:0.65
13:2.53
14:1.58

Any thoughts where to check?

 

[Perry Babin]

Determine why pin 12 of the 494 has insufficient voltage. It should be near 12v.

 

[mike49504]

Does the 494 feed the 324? Or does the 324 feed pin 12 on the 494?

 

[Perry Babin]

There's likely a transistor that feeds pin 12 of the 494 and pin 4 of the 324. You'll have to follow the circuit back to find it.

 

[mike49504]

Thanks Perry,

Ill follow the circuit back and find which one it connects to