Question about Samsung LE40R74BDX 40 in. LCD Television
I have a Samsung 40" flat screen tv. When I watch tv, the screen has recently started going black, though the sound is still present. This seems to only occur at night. I can watch all day and it is fine.
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Posted on Jan 02, 2017
Sounds like your power board is failing. contact samsung tech support and describe your problem. some parts on samsung have lifetime warranties and the service call is free.
Posted on Apr 09, 2009
SOURCE: lg 42inch plasma
Sounds like main board failure and or power board failure. You need to contact manufacturer and describe problem for tech support. Some of the parts in Samsung TVs have lifetime warranties. Change out of two board is about an hour job and service call is usually comped. Hope this helps. J
Posted on Apr 09, 2009
One of your transformers on the inverter board are failing to sustain regulated power to the florescent lamps resulting in a dark picture. Also check the SMD fuses on the inverter board(s) see if they have blown. You will need a continuity meter to check them. You can get one from radio shack and be sure to get one with audible sound....you don't have to replace boards when you can fix them.
Posted on Jul 10, 2009
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