Question about Samsung HL61A750A 61" HDTV
When we turn on our TV, the green LED light (labelled 'LED') blinks, but no picture comes up. After a few seconds, all the LED lights blink for second, then the light labelled 'LED' blinks some more. No light or picture is ever displayed on the screen.
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Posted on Jan 02, 2017
SOURCE: samsung plano tv
The problem that is happening is due to the shutdown circuit activating, which is an indication of excessive current flow. This may indicate a problem in the High Voltage section or in the power supply feed from the HV section. In any case this problem is best dealt with by a trained professional. I would suggest that you take the TV to a qualified TV repair person and have them check it out.
I hope this helps
Posted on Jul 25, 2008
Just to be a little more detailed, since I just fixed this problem. It is the capacitors are the problem. However, I think that if you have some minimal skills with soldering, you can fix this yourself. You just need to take out the system board, then the power supply parts are on the top right. The bad capacitor(s) will be bulging at the top and possibly have some brown stuff coming out. The ones that go bad are 1000microfarad, 10V, however you can replace them with higher voltage. I got 35V caps from radio shack for 1.59 each. You just need to solder out the bad ones and then put the new ones in and solder. Remember that the negative end goes on the side with the bold black part of the circle on the system board. Then just cut off the extra ends of the capacitors. If you are capable of doing this yourself, you will spend at most 6 dollars instead of however much a technician costs.
Posted on Sep 25, 2009
If you can open up the monitor from the back and get the cover off. Look on the power board and see if there are any puffy capacitors, most of the caps will have a silver flat top but if there are any bad ones, they will have a puffy top that stick up.
If you see any then make sure you replace them with capacitors of the same Uf rating and at least the same volts or more.
If you don't see any puffy caps then that means the screen is bad and the whole monitor would need to be replaced.
Posted on Nov 30, 2009
Testimonial: "Opened the LCD monitor up, and it was as he said. A bad capacitor. Thanks!! Replied within minutes."
First Take off the Lamp Door and replace it back the way it was secured with all of the screws. Doing this will reset the safety interlock switch which heats up and opens the circuit causing the set to shut down. After doing this and the set still shuts down check the lamp. Depending on the amount of hours on the lamp it may be a bad lamp. They will fail with out any obvious signs. If the set shut down and goes straight to the Stand By condition then you have a bad Power Supply. If you hear a whining or buzzing sound then you have a bad Color Wheel.
Posted on Apr 14, 2010
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