Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. 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 inverter board as card basis.
http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
SOURCE: My Samsung LN-T325HA TV powers on, a picture is
Your video boards located near the power supply have failed. Unless you are skilled it is not A DIY job as they need to be matched. There are two and both may be involved. The caps can be changed but labour costs dictate it is cheaper to replace the boards than repair them.
You might want to get a quote first.
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SOURCE: tv turns on, picture disappears
Sony KDFE55A20 turns on then after a few minutes sound and picture disappear only to come back on then off...continues this cycle until I turn it off. Power light stays on. Have tried checking power supply that is not it. What else could it be?
SOURCE: samsung ps42a457 picture disappeared whilst watching,sound still present
Change input device to some other like a DVD player and see.
Switch off TV, switch off power, remove plug and wait for 48 hours and retry.
If problem persists, call in a qualified service technician.
SOURCE: I have a Samsung LE40B530P7W
THis TV set does not use bulbs - It is not a rear projection TV it is a flat screen LCD TV. I know because i just took one apart. What are you talking about on here? There are three boards in it. A power Supply, a correction board and a video board
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