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TC1 lcr-meter transistor-tester fix

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madires:
The next step is to check the signal lines for the display. Any bad solder joints? If you have a scope also check the SPI signals.

cuistots:
no bad solder joints.
and i haven't a scope.

madires:
In that case you could try another display. IIRC, it's a ST7735.

cuistots:
Here is the reference of the lcd display, I will try to uncloud it to see its driver

cuistots:
it's exactly my problem:

https://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/msg2168986/#msg2168986

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