I have some of those but haven't tested them yet. They will go in a BHSE so that will see if they actually work. The lead wires the use are the worst I've ever come across. Nasty, cheap stuff.
There is no spec available for these transformers, not even in the service manual. I did replace one in a 100V (SRA-10S) unit and used these specs, 520VCT-100ma, 52VCT-250mA
They are not all the same but most are of similar quality. Those that I just got are from China but feel a lot nicer. Need to do some more testing though...
There can be other factors as this is sour dough. Too much activity in the starter leads to unstable dough and too much flavor. Sour dough is not supposed to taste sour at all...
Yeah, that stuff should never be used.
As for the 15-18V, are you talking about offset or balance? The amp drifts a lot as it warms up but you might need to adjust the series resistor in the offset adjustment.
The reason we use green boards is to easily spot any shorts so if you can't see any then the board isn't at fault.
There isn't enough power in this circuit to cause anything like this so it has to be a short, bad part or something like that.
It's likely rising too much so not enough salt. The golden rule is 30gr per 1L of water. You can go up to 40gr for more flavor but also slower rise time.
Best way to measure AC is reative to each other so for single tap, one end to the other. CT to each end etc. That's why you are getting results which make no sense.
Also with everything off and not connected, measure the DCR of each of the windings. That will tell you if you have internal shorts.
Disconnect everything and then wire up the transformer again. I don't see how you could damage the transformer like that...
Also, never power anything up without the first job being to test the voltages.
Plenty of custom transformer options. None will look like the stock one though.