cześć wszystkim, w tym telewizorze czerwona dioda LED zawsze świeci światłem ciągłym i tv nie włącza się ani z przycisku włączania, ani z pilota, 5V są obecne, czy może to być problem z pamięcią flash lub inne problemy?
Hello, check the output voltages from U2 and U3, they must be exact, otherwise replace the corresponding integrated. Many defects of these frames are to be attributed to these 2 ic.
Here the wiring diagram with the exact voltages.
in fact I also tried to reprogram the flash several times even replacing the chip but without results, then measuring the voltages I realized that U2 delivers 2.2v instead of 1.3v and U3 delivers 0v instead of 1.8v so first you need to restore the two voltages replacing both U2 and U3
hi, I replaced U2 and U3, now the voltages 1.3v and 1.8v are present, the TV only turns on that sometimes it freezes with a loud audio noise and noise on the image, it no longer responds to commands, in this phase it does not the 1.8v are present because the enable voltage is missing by disconnecting the mains plug and reattaching it it turns on and works normally, it has been on for several hours now it is ok, I think of a problem on the processor, possibly the main is to be replaced, let's see how it goes