👋🏻I recently got a tx-pr42gt30, I bought it in non-working condition. When I opened it, I saw that all the transistors and diodes had been removed from the tnpa5330, and several microcircuits were in poor condition, so I decided not to try to repair it. Instead, I bought another tnpa 5330 (also AB), which was already repaired (according to the seller, the board was repaired and worked before the screen was damaged), transistors were also changed on it, but Chinese copies were installed (there is no round hole in the middle, the inscription is easily erased) and a pair of transistors that seem to be they must have a different marking...After installing and connecting a new 5330, I got 6 blinks:The TV turns on by itself, the green indicator flashes, but for a moment gray bars appear on the screen and I get 6 blinks in red. After finding a diagnostic circuit on the Internet, I disconnected the cable that connects the 5330 to the main board, then turned on the TV and got 8 blinks in red, in this circuit they say "replace SC board", but I just changed it. After that, I turned off the 5530 completely, getting 8 blinks. I found out from the Internet that 8 blinks mean "SS energy recovery circuit", concluding that in my case SS is tnpa 5331, I turned off the power from it (I disconnected the connector with 3 pins, there was also an ss33 cable, but I didn't touch it), still getting 8 blinks. Just in case, I measured the voltage at the TPVSUS point, which has a voltage at 5330. When turned on, my multimeter showed ~ 200 volts, and when the protection was activated, it showed an excess and a drop to 0. There is also a 15v voltage in this connector, but I did not measure it.Now I suspect the power supply, 2 pcs of r6015anx were pierced in it, the last master replaced them. As well as the main board. Why did I see the stripes on the screen (horizontal)? Despite my crooked hands, I tried to connect the cables normally (it still turned out a little crooked, but there should be a margin. I should definitely raise the 5330 slightly up to straighten them out)After all the inclusions, the behavior does not change.
I have a very poor translator, I hope you have managed to understand what I am facing with examples.
I have a very poor translator, I hope you have managed to understand what I am facing with examples.
