Repeatedly repair this Hisense machine! (Resolved) - Appliance Repair - Huaqiang Electronic Network

1206 red anti-stick

SMD aluminum electrolytic capacitor

I was called in to repair a 25-inch Hisense flat-screen TV. The issue was that it wouldn't boot up, the screen wasn't bright, and there was no degaussing. After checking, the power supply had gone black, and the 9656 transistor was broken. From past experience, I suspected that the color line was leaking due to this component, so I suggested replacing it with the user. They agreed to replace the color line and other parts. However, I didn’t expect the CPU to be faulty as well. I had to inform the user that the board also needed replacement. The new board should be red and yellow, and I offered a one-year warranty. To my surprise, the user was very satisfied and immediately agreed to the replacement. So, we went out for the third time.

I thought everything would be fine, so I didn’t call the customer that night and told them it took over two hours. On the fourth visit, I checked the damper tube again. Since it was a new board, the test machine showed everything was working normally, and the cover was on. But the next day, the user called again. On the fifth visit, I came back to their home for further repairs.

I checked the damper tube again, thinking maybe the power was too low. After using a BY459 for more than ten hours, everything worked fine. When I put the cover on for over ten hours, it still worked. But then, within half an hour of being at the user’s house, it burned out again. I considered offering a refund, but they didn’t want it. They believed I could fix it because they didn’t want to switch to an LCD TV.

After returning home, I didn’t think much about the board's quality. My biggest doubt was the deflection. So I found an old flat-screen TV directly. After replacing the components, I flipped the cover and tested it for more than a week before sending it back to the user!

This repair took nearly a month, and now, after six months, the TV is working perfectly and has been running smoothly ever since. It was a tough case, but in the end, everything turned out well. It taught me to always double-check even after the first fix and never underestimate the complexity of certain repairs.