Question about Hisense Refurbished 50"" 1080p LED-LCD HDTV -50K23DG
First, in a dark room, I looked for light while TV was on. NONE. So no backlights. I did the flashlight test.... I see the picture on the TV. So that tells me that the T-Con board and main Board are both fine and the the issue is either the Inverter or LED Driver Board. My problem is that I can not locate either for this TV. I THINK the inverter is built in with the power supply... I am not sure where the LED Driver board is or if this TV has one or what. Should I replace the Power Supply Board?
Posted by Anonymous on
Hisense TV's usually use PCB Boards by Vestel and not Hisense themselves, have a look at: Vestel Help If the Boards in your Hisense match this Board/Part Number format at least you'll know what to search for, replacing the power supply will not help unless the process has been incorporated into the power supply and that is not known for certain yet
Posted on Jan 13, 2016
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Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.
Mar 24, 2011 | LG 42PJ350 42 in. TV
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