-KT-2914: Works but can't seem to source a working flyback. If you have one DM me
Did you try one of the replacement flybacks from tecknoservice or one 'rescued' from another chassis ?Sanwa PFX KW0606A
Symptom: Transformer whining, then shutdown
I had this chassis out at an event for a few hours and it was reported as broken. Found Q408 shorted, also found D425, R484, R431, Q420, and Q421 bad. Had a suspicion of a bad flyback so I powered it up without the flyback primary connected and it was now working. Reconnected the flyback pins and all those components failed again. Replaced bad flyback and all those components again to fix.
I used one from another chassis that is a spare I haven't had a chance to look at yet. The teknoservice ones are way overpriced when you can get an entire PFX chassis from Xianyu for under $30.Did you try one of the replacement flybacks from tecknoservice or one 'rescued' from another chassis ?