> I've had a look inside and it looks really modular, though I have to
> trace the wiring still.  There's a main board with a Zilog processor,
> a bunch of 74HC buffer and latch chips, and RAM.  Then there are other
> boards with solid-state relays, etc, and the LCD is separate and
> keypad is separate.  Main power is on the back of the oven.  There are
> DC motors for driving the convection fans, etc.

I would guess then, that whatever setup parameters are determined during
the 'tune' operation are stored in a RAM that has a capacitor backup
voltage source, one of those umpteen farad thingies. Once that is
discharged through the machine not being used for some time then the
'tune' operation needs to be done again.

Maybe the best scheme is to replace the RAM with FRAM, and pay to get a
single 'tune' done to get you on the road again, with the hope that the
data is now permanently saved.

Or is there some way to tap the data stream between the keyboard and the
rest of the system, and record it when the tech does the 'tune' ... ???
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