Question about Samsung HCN529W 52" Rear Projection Television

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No picture. Power's up, can hear sound but no picture. change to other input's same results. Can not pull up any visual image

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Power def board is bad i have been trying to find out what exactly on the board is bad but have had no luck.

Posted on Jan 18, 2011

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Posted on Jan 02, 2017

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Hi evansw591,
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.
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Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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