Hi there,Repair Lincoln V205T AC\DC Main IGBT Inverter Board
Hi, after long time later, just start again try to repair my roasted main pcb ( called by Lincoln Main IGBT Inverter Board ) of Lincoln İnvertec V205T AC/DC welding machine. I want to try to share my knowledge and experience. First off all i need to circuit diagram roasted section of pcb which...www.mig-welding.co.uk
please look into mentioned threads. most probably you can find a solution and if you need more help please write me.
I’ve just tried again to fix this, it lasted about 2 minutes before one of the fuse on the supply board exploded into multiple pieces!! After checking one of the IGBT’s has gone totally short circuit again…however this time none of the diodes or TVS’s have failed.
I’ve been powering it up for 20 seconds to check that the LED’s on the board are indicating that the circuits are working, the front display even powered up and showed normal operation.
It’s getting expensive with these IGBT’s, in the repair you did you used some cheaper alternatives, what were they?
Thanks