Hi Im sorry to hear all that.
But have you checked the power supply outputs as well to rule that out?
I do want to add, that I would have suspected the main as the original fault and with all of my years of experience, I think you got back a bad main.
This happens so often its ridiculous.
Its embarrassing to me the Tech at someones house and I replace a board and the thing still acts the very same way lol.
I would try putting it all back together and see what happens, it may be ok, if not, please get another main or have that one really repaired.
No pun intended.
In any case, I will stick with you until this is complete.
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