BA-5000 advice.

[Hipocrates]

I've working on a BA-5000 which came with, Bridged fuses, one channel output and driver transistor fried, some bad resistors on the zobel network fried, and rust issues.

I got the power supply, and drivers boards in working condition

Let's call the output transformers 'Autoformer A" and 'Autoformer B'

./ I can adjust bias on the side that Autoformer B is connected.

./ Autoformer A is causing the unit goes in protection, it doesn't matter if is connected on the right side or the left side.

I don't know much about autoformers other that they are a very low resistance devices, and that they don't go bad often.

I don't know much about the unit, other that it was on bad shape and given the amount of rust and some water marks, probable got wet or at least was on a very humid for a long time.

My question would be... How can I test Autoformer A?

Thank you fellows.

Cheers!

 

[skippy124]

Do you have access to a meter that can measure inductance. You could compare both transformers (input and output inductance).

Cheers

John

 

[Hipocrates]

Do you have access to a meter that can measure inductance.

I have a small chinese tester that I use for inductors... but not sure if that works, Maybe i can get one meter for that (good excuse to buy test gear)