What's wrong with my1943/5200 Mosfet Amplifier? Blown on first run

I have just brought an 1943/5200 mosfet based amplifier board. Shopkeeper said it's rated for 24-0-24 AC.

So I connected it with 24-0-24 transformer like this in image below. Refer this link for image https://pasteboard.co/HRSTBhP.jpg

As soon as I turned the power supply, I heard a loud hum from transformer, Like it was on full load. and few seconds later cap. on left side blown. (I have also got a loud noise from my speakers also like I have passed 24VAC through em.)

I have no Idea why this happened. Did I made some mistake? Is circuit is actuality meant for 24-0-24 DC? What now? can I still revive my circuit? What are the components which might have died in the process? are my mosfet's are still okay?

by shreyashsingh007
December 15, 2018

1 Answer

Answer by mikerogerswsm

Circuit diagram:


Yes +/-24V dc. Shopkeeper's fault. Not your fault. He must fix/replace it. Don't take no for an answer (unless your name is Teresa May).

+1 vote
by mikerogerswsm
December 16, 2018

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