250 EX no welding current

[shredator]

Hello,
I have a 250 ex from 2010 that just recently stopped working. I was welding with AC at about 200A, and I heard a pop from within the welder, but that may have been the circuit breaker tripping. Now the welder turns on, and I get the HF start, but it wont switch to the welding current. If I try to scratch start, nothing happens.

Can anyone tell me how to go about trouble shooting this? I opened the box and poked around, but I dont see any obvious signs of something burning or blowing up.

Thanks in advance

[performance]

It has blown IGBT's or diodes. Not much you can do, except send it for repair.

[shredator]

bummer. Is it possible to buy some replacement board and fix it myself?
Thanks for the reply

[performance]

No, the board is rebuild-able and that is what we do with those older boards. I'm sure we have a few new ones, but are held in reserve for non rebuildable boards. That is why I said to send it in.