quick question

[timwebb]

is 4.42v to high for the gate in the power supply?

 

[Perry Babin]

No.

 

[timwebb]

ok the amp im fixing is a 1000.d i got it to power on with all new out puts but still dont play and it only draws 1 amp.

 

[Perry Babin]

What is the exact make/model?

 

[timwebb]

memphis 1000.d the silver one.

 

[Perry Babin]

I'm assuming that it's the 16-st1000d. Correct me if I'm wrong.

Does the relay engage?

Is there any DC on the bussbar that's between the transformer and the filter caps?

 

[timwebb]

yes the relay engage.and there is no dc on the bussbar.

 

[Perry Babin]

Have you operated all of the switches and pots through their entire range?

If so, did the amp ever produce audio or any noise?

 

[timwebb]

YES I operated the nobs but it never made any noise

 

[Perry Babin]

Do you have a scope?

 

[timwebb]

yes.

 

[Perry Babin]

Set the scope to 5v/div and 2mS. Drive a strong signal into the amp. Do you see any audio on that bussbar?

 

[timwebb]

yes there is audio across the busbar.

 

[Perry Babin]

If the relay is engaged and there is audio on that bussbar, the relay is defective, there is a bad solder connection on the relay, there is a break between the bussbar and the relay or there is a break between the relay and the speaker terminals.

If you connect a speaker to the speaker terminals and there is audio on both the positive and negative speaker terminals, there is a bad connection on the negative speaker terminal.

 

[timwebb]

ok i replaced the relay and the speaker is pulsing and one output transistor smokes and the power and protec light blinks on and off fast

 

[Perry Babin]

Check for solder bridges or other similar problems. Replacing the rectifier shouldn't have caused the problems you described.