Let me phrase it this way: the m-firmware assumes you're running one of the typical boards described in the clones file. The old TC-1 with its STC is not one of those. So, if that CTester were mine, I would read around
page 195, and try to match what's described there, verifying it against your LCD connections. If your new ATmega is good and correctly soldered, nothing else got burned when you inserted the charged capacitor, and you follow without errors all the steps, you should get your unit working, like several of us have achieved.
I will fix it later when I get the elements in the diagram.
FYI:
1)I have made several of those circuits on veroboards with different values for transistors and resistors, and it worked because you only need those "to latch" when you press the power button
2)Some of the old TC-1 developed shorted capacitors/diodes on the power supply due the relatively high voltage of the Zener tester section
3)Probe there's no standard,
the last TC-1 I got didn't require that other board or
firmware for STC, because it follows a different schematic. (But first I had to fix a bad solder job)
On the other hand, you're now on a point of no-return: you burned your old ATmega and now you have an useless board, so it's up to you to decide how much more time you want to spend/invest on this, and learn from it, or toss the unit and find another $20 one (being aware you probably won't get an original ATmega).
And off-topic: if any of our hints help you, there's the "Say thanks" button on this page
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