Hi, I have a small Sony KVM1430A TV. A week ago, I replaced all the capacitors in the power supply, audio, and flyback transformer areas, as well as those on the board connected to the tube. Immediately after replacing the capacitors, the TV worked perfectly, but two days after replacing the capacitors, the TV seemed dimmer, less vibrant, and the image had shrunk slightly by 2 mm at the sides of the screen. I immediately fixed the screen width issue. I don't understand what happened. I tried sending a white pattern through a DVD player connected via RGB SCART, and as I suspected, the TV appears darker, with whites tending towards gray. I also sent a color pattern, and the colors are dark and not very vibrant, even with the contrast set to maximum. I tried measuring the tube filament voltage between H1 and H2 with an analog AC multimeter, and if the measurement is correct, it comes out to 5.4 volts. I think the voltage is low, it should be 6.3 volts, but I don't know how to fix it.
https://drive.google.com/file/d/1BPc...aZQWQBre1/view
https://drive.google.com/file/d/1RHf...Hsg4R3XHy/view
04-22-2026, 01:57 AM
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