Re: Hisense lcd40v57ca buzzing
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Hey Folks just got another Hisense with an unusual Problem.
After plugging in its starts buzzing on the cold side. Could not located it 100%, but seems like transformer/capacitor.
TV has 1 horizontal Line, often static. After 10min screen gets flickering and after about 20min screen gets Black while Sound is on. After turning off and on screen appears back for about 5min and then went Black again.
I checked LED Voltage:
While Screen is on about 115v
While Screen is Black also about 115v
LED Connection unplugged also 115v
...09-12-2021, 11:09 AM -
85” Hisense TV
Greetings,
Request for Technical Assessment – Faulty Hisense 85Q6NAU TV
Dear TV technicians of forum, I hope this message finds you well.
I am writing to seek assistance regarding my 85-inch Hisense Smart TV, model 85Q6NAU, which is currently experiencing a fault. The unit is approximately two years old, and I am not sure if it has a warranty.
I have attached a photo showing the issue for your reference. I would appreciate it if your experienced technician could kindly review the image and provide some insight... -
Hey folks,
I'm not a professional, but I do have a decent amount of knowledge when it comes to electronic repairs.
A friend of mine recently bought a brand new Hisense 75” 4K QLED Smart TV (75E7NQTUK) but unfortunately, he cracked the screen just a few days later. Luckily, he had insurance and got a replacement right away but weirdly enough, the insurance company never asked for the broken unit back.
So, I took it off his hands and figured I'd try to repair it myself rather than see it go to waste. I've been searching for a replacement screen but can't... -
Hello,
I accidentally changed the project ID in the service menu of my Vidaa Hisense 100U7KQ TV. When I turn on the TV, the screen displays an RGB color cycle (test mode???). I contacted Hisense, and they sent me a usb_MTK_9618.EU.bin file, but it doesn't work. I can see that the USB drive is being read, and it flashes for about 10 minutes (the screen remains in the color cycle during the firmware reading), then the TV turns off and restarts, but still in the color cycle mode.
I want to mention that the 4GB USB is formatted in FAT32 MBR. I've also renamed the file to... -
The PSU works, but shortly after powering on (either in the G5, or by shorting the power-on pin to ground) it begins buzzing loudly. It also makes the LED lights connected to the same circuit flicker. It's definitely a buzzing, not a high pitched whine.
The buzzing seems to come from the high voltage side of the board, perhaps from the white relay. Could the relay be bad, or could the 5V supply be bad enough that it's unable to keep the relay on? Any pointers to help isolate the issue? Thanks!
Other info: API2FS34, ID 291, Date B040405-31-2024, 07:13 AM
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