OK guys. Here is one that is killing me:
On bake, this unit will heat for a period of time (not always the same amount of time,) then the clock seems to fade out, the lock relay slams across, and the clock resets with PF. I've already put in a new (rebuilt) clock = no change.
Lock relay switches, all 4 of 'em test good.
Happens when bake and broil relays are disconnected.
Sometimes will heat for 30 mins before doing it.
I'm thinking either a bad bake relay ... a bad thermister (although I don't see how this can reset the board) ... or a grounding/power supply issue.
Any thoughts or experience would be appreciated.
Wiring diagram and picture of back attached.