Question about Samsung LN37B650 37 in. LCD HDTV
Stand by light on at red just flashes
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Posted on Jan 02, 2017
Most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, red light blinging codes, test points, and part# lists. Usually, cost under $20.
I hope I shed some light on the subject for you.
Posted on Jul 04, 2009
Most of the time this problem is caused by the power supply in the set. Capacitors on the circuit board wear out. Usually the ones rated at 10 or 16 volts. You can see a physical bulge of the defective components in most cases. The way to repair this is to either replace the bad parts or the circuit board itself. If you take this to a repair shop the cost should be less than half the cost of a replacement tv or 125-295 u.s. dollars. If you have test equipment and solder/desoldering equipment you can repair it for 20 dollars or less. The only way to be sure that this is the problem is to have someone disassemble the set and check it. But this has been only a very educated guess. Good luck, Russmann.
Posted on May 13, 2010
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