I think current is not the reason.
Maybe rectifier was damaged when your transformer was destroyed.
When iron core is same and secondary voltage is about same as before,
is secondary current same too.
current is not a problem. As the rectifier had a current rating of upto 15 A.
Now assume you just shorted the O/P of rectifier, then a maximum current will flow , which will be greater that the specified current rating and if it is shorted for a while, it may damage your transformer and/or rectifier.....:sad:, may be some time this may be happened to you earlier...
Having a massive short in an electrolytic capacitor is unlikely, the amplifier IC sounds more reasonable.
Can you show the back side of shorted Area. May be it shorted while coming contact with the metal case below (If it has one).
1. I am just asking to show the other side of the burnt area i.e. back side of your first picture.
2, Is that a computer power supply or wat?
3. was it in a metal case?
It doesn't look burnt.
A mistreatment, that most likely won't be tolerated by the IC is overvoltage. I see, that the suggested supply voltage is 18 V with 26 V maximum rating in operation. This means, that both 18.5 or 19 V AC is rather near to maximum rating and a grid overvoltage of e.g. 10 % could already kill the amplifier. This sounds like a pretty baddesign.
You would want to remove a few windings from the transformer secondary for safe operation.
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