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| TC1 lcr-meter transistor-tester fix |
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| LeWidget:
Hi all. I was looking to get one of these testers but tossing up between the TC1 & T7. Which one is more useful, reliable, easier to repair if something goes wrong ? |
| acerquax:
--- Quote from: LeWidget on October 03, 2023, 02:27:14 pm ---Hi all. I was looking to get one of these testers but tossing up between the TC1 & T7. Which one is more useful, reliable, easier to repair if something goes wrong ? --- End quote --- In the meantime I have two of these T7, I blowed up one of this devices by trying to measure a charged capacitor ( |O |O) so a huge spike killed the analog input of the MCU! I changed the MCU today and now we will see how good the different firmwares are. No experience with the TC1 but if I understand the threat correct, these pcbs are almost the same. Don't bring too much current into the MCUs 644 or 324 or whatever, the absolute rating for input current of this MCUs are strong limited! Otherwise you need a microscope and a good soldering device and a good idea to get rid of the damaged MCU :-DD |
| acerquax:
With a microscope and a good soldering station I could replace the atmega32x with an atmega644. I could flash the hex-files and eep-files(only test button) which indman suggested but after switching on the T7 I see only a white screen for some seconds! :palm: Thats it! What do I wrong? Do I have to reflash the 15L104 as well? :-// |
| madires:
There are several variants of the T7. Please post a picture of the tester's PCB and also one of the display module (the side with LDO, levelshifter, etc). |
| acerquax:
Voila'... Thanks mate! (Dankschee) ;) |
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