Memphis 16-MC1000D

[mike49504]

I got this amp in for repair And It has 63 volts of DC on the outputs.

I checked all outputs and they test fine.

Any ideas where to start?

[Perry Babin]

Are the audio driver boards in sockets or soldered directly to the main board?

[mike49504]

They are in Sockets

[Perry Babin]

Does the DC go away if you remove the boards?

[mike49504]

Yes

[Perry Babin]

Reinstall one at a time to see if the amp will produce audio with either board installed.

[mike49504]

If i only put 1 in at a time no matter the loacation I get DC on the outputs .

I tryed both boards and both locations and Get 63 volts of DC still

[Perry Babin]

What's the DC voltage on pins 9 and 11 if the 14 pin IC on the board behind the RCA jacks.

[mike49504]

9:1.40

11:2.56

[Perry Babin]

It's likely defective. Post the voltage on all of the pins.

IC#
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14: