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Black screen, only sound
common problem with LCD TV is a dead screen but there is a sound.
so the problem is always coming from inverter board inside the lcd,
inverter board controls the ccfl bulbs that illuminate the image in the screen.
there are 4 or more bulbs inside your screen supplied by inverter board.
you can see this inside at the back of the screen there are 4 boards inside,
display driver board,power supply board ,inverter board and input board,
this could be repaired or replace.but you need some tools for opening the case and test equipment.
add comment if you want some help..
hope i help you....
on Aug 31, 2011
My tv will not power on
Fault to the main power supply regulator section. 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. Surf the site with patience. Pull up older posts.
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.
on Jan 04, 2016
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