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Help replacing IGBT's

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dawesy:
So the new components turned up at 8:20 this morning. Impressed the turned up so quickly ( got them from farnell on line), not so impressed at being woken on a sat morning (especially as I have a dose of man flu at the mo). Decided to just replace two IGBTs as I didn't want to fry all 6 if it went pop :zap: 
Put it all back together, which was fun as the securing screws for the IGBTs don't fit through the holes in the pcb :doh:
I've decided to junk the original motor even though now it seems ok I just don't trust it. I connected up to the new motor, pluged in and switched on .............. After a short delay the inverter started up, bonus at least I've not broken it any more, set the parameters to the new motor, closed my eyes, held my breath and at arms length pressed start......................................... IT ONLY BLUMMIN WORKS!!!!!!!
One happy bunny. Just got to fab up a new mount for the motor and it looks like we're away.
Once again I'm indebted to those who helped me on here, I owe you all one. Thanks again.

John Rudd:
Good to hear your success story....and with no further tears.... :clap:

awemawson:
 :thumbup: :thumbup: Excellent news Lee, glad it worked out ok in the end  :thumbup: :thumbup:

dawesy:
Celebrations were short lived.
Spent an hour or so last night making chips with no issues.
Came out this morning turned on the inverter, no probs. pressed run and the lathe started up but I remembered that I still had to swap two of the phases as it was running backward ( ran it in reverse last night, so it turned the right way), pressed stop ( I kept it pressed but don't think this had anything to do with it) and the lights went out :zap:  confused I went and put the power back on came back and turned the inverter on but was greeted by smoke from it!!! It won't power on at all (fuse is ok)
I've taken it apart and the two IGBTs I replaced yesterday are shorted. I can't see anything else damaged bar the contactor next to the green 330rj resistor has a melt mark from the resistor in it ( top of board pic) so it looks like something else took damage in the original short. Not sure what else to check and think I might be better junking this one and getting a new one ( this one has had random electrons buzzing around wrong bits already). Good news is the lathe runs good though.

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