audio pipe

[timwebb]

anyone knows what side the pos and neg rectifiers go on a 1500 audio pipe?

 

[Perry Babin]

Is the board marked?

If not and the rectifiers are common cathode and common anode, follow the trace from the center leg to the rail cap terminals. The common cathode (diodes facing inward) will have it's center leg connected to the positive terminal of the rail caps.

 

[timwebb]

ok. i thought the power supply was fine when i was working on it cause it didnt over heat. i found some leaking transistors.and the center leg on the power supply transistors is 118v. im still getting that weird signal and the output card gets hot.

 

[Perry Babin]

118v? Are you sure your meter is working properly?

 

[timwebb]

i meant 11.8v sorry

 

[timwebb]

.

 

[Perry Babin]

This image is useless without more information. If you need help, you have to provide as much information as possible.

What were the scope timebase and vertical amp settings?

What point in the circuit was this taken from?

 

[timwebb]

volts/div .2 time/div 2us.
this was taken from the output inductor.

 

[Perry Babin]

Post a photo of the inside of the amp.