Products > Test Equipment
TC1 lcr-meter transistor-tester fix
madires:
--- Quote from: abdulbadii on February 02, 2023, 02:32:33 am ---original C is non polarized C isn't it, how can be replaced by polarized one?
--- End quote ---
Which cap do you mean?
Siriano53:
Salve a tutti. Grazie per le vostre discusion sui possibili guasti del tester tc1.Il mio tc1 si è risvegliato sostituendo il 78L05 e zener l'SRV05. :-+ :clap:
gianb_diazm:
Hi everybody,
I'm also the proud owner of a malfuctioning T7 component tester ;D, but it's not suffering from the two typical failures described here. My tester is stuck in the Zener testing mode and won't budge from there. I was testing some Zener diodes, and having forgotten that you're supposed to use the KAA section of the ZIF connector, I was using the 123 section :palm:. I realised my mistake and started moving the wires around when I saw it: the little spark of death. Long story short, I derped out and gave the 123 testing probes a good ZenerZap™, and now it thinks everything is a Zener.
The tester is this one exactly: https://a.co/d/3DXImdQ
The PCB looks exactly like this one: https://vrtp.ru/uploads/post-39-1674996347.jpg , it says C5.1.3_2022/5/25
I have tried desoldering different components from the board to try and break its Zênerie (Zener rêverie lol), to no avail. It turns on, charges the battery, decodes IR and even speaks serial to the Arduino IDE at 500000 baud.
Any ideas?
madires:
Most likely the ATmega's probe pins are zapped, and the ATmega needs to be replaced.
indman:
madires, if it has exactly the same circuit board as he indicated in the link, then this is a Chinese processor, for which there is no working firmware yet.
gianb_diazm, remove the U7 chip from the board and turn on the tester again. What will be on the display?
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