MTX 6500D

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That's normal for this amp.

Do you have rail to rail oscillation on the outputs?

Do you have rail voltage?

Is the gain set to the maximum position?

Have you operated all switches and pots through their entire range with speakers connected to see if the amp produces any sound (noise or audio)?

What op-amp readings vary (AC, DC, include pin numbers)?
 
I have both + - 59 volts of rail voltage..

I get oscillation from rail to rail ..


Gain is set to maxium posistion..

If i mess with the gain pot i can get the spear to thump back and fourth..

Im gonna try switching the pot out to see if that fixes the problem if not i will post back with voltages on op-amps
 
First op amp

Pin 1:17.16
Pin 2:15.14
Pin 3:15.79
Pin 4:1.44
Pin 5:11.46
Pin 6:10.61
Pin 7:17.26
Pin 8:18.04

2nd op amp

Pin 1:16.53
Pin 2:16.53
Pin 3:16.57
Pin 4:1.43
Pin 5:16.58
Pin 6:16.50
Pin 7:16.50
Pin 8:18.10

3rd op amp

Pin 1:16.59
Pin 2:1.18
Pin 3:0.57
Pin 4:1.43
Pin 5:16.59
Pin 6:15.96
Pin 7:17.24
Pin 8:18.12

4th op-amp

Pin 1:2.67
Pin 2:2.67
Pin 3:2.04
Pin 4:1.42
Pin 5:2.04
Pin 6:2.66
Pin 7:2.66
Pin 8:18.13

5th op amp

Pin 1:17.46
Pin 2:1.44
Pin 3:0.77
Pin 4:1.42
Pin 5:1.44
Pin 6:2.19
Pin 7:2.66
Pin 8:18.14

6th op amp

Pin 1:-1.82
Pin 2:0
Pin 3:0
Pin 4:-18.22
Pin 5:0
Pin 6:0
Pin 7:0
Pin 8: 17.44
 
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