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Hello,
I am troubleshooting a POLAROID TVB55R4PR004 TV which has a short circuit when the inverter tries to start. I checked and replaced some faulty components.


On the card (reference CV3458H-A50), I have two integrated circuits marked PU1 and PU2 which also seem to manage the switching power supply. An inscription RBt 35 CZ is noted on it.




I am therefore trying to find out which component it is in order to be able to find the datasheet or a diagram of the card.
Thank you in advance for your feedback.

Best regards.

Progfury

Sziasztok, adott ez a készülék. Kamionban, "alternatív kábelről" is üzemeltették, és számomra érthetetlen módon fordított polaritást adtak neki. A panelen van pár szénné égett induktivitás, de csodálkoznék ha ennek cseréje után elindulna. Szerintetek érdemes ezzel foglalkozni? Esetleg volna valakinek pl. kijelzőhibás készülékből maradt működő vagy javítható panelja? Üdv. Tamás

hello! Kedves Kolegák! Valaki használt már ilyet? Hol lehet beszerezni? 300V*200A iGBT FET

I have this LED TV that goes for about 30 minutes, then stops and restart power on, the operating time decreases every stop-start. It is equipped with mainboard / source: CV9202H-C39 (on the white label also writes after C39- 10-E001), display A320KD103G -1 (VVF32H101G00). I replaced something electrolytic caps and I changed the 25Q32 flash written with a software for the same chassis but another screen, picture head down. The problem persists Tensions seem ok,.I went into service mode and accessed the reset function, but nothing changed Any idea is welcome. Thank you!
I complete: before stopping and restarting make the "burn mode" cycle - change the colors white, red, green, blue.