Question about Televison & Video
Sounds like The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Posted on Jan 01, 2017
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Posted on Jan 02, 2017
May try to replace your power supply. Average cost runs $200 via Internet. Also may inspect test & replace deformed an or any bulging caps.
Posted on Jun 02, 2009
If you are going to DIY and have proper tools and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Posted on Jul 02, 2010
Check its backlight inverter board, and CCFL lamps. In most cased, the back-light inverter board might need replacement. Check all the CCFL lamps too for any black edges.
Posted on Jun 10, 2013
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