Question about Samsung Televison & Video
It will not display the menu or settings when i press the buttons in the remote control. I checked the power board, seems fine with voltage output. I can see the back lights and led lighting up, will also display the channel i am interested but only for few minutes and goes into reboot mode.No puffed capacitors or blackened circuit board in Power, Main or T-con boards
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Posted on Jan 02, 2017
Hi kamil. Mo medenom, nomogom! I think problem isn't in power supply. It should be in control board (madaar-e farmaan). Hossain Shahidzadeh
Posted on Feb 24, 2008
Voltage checking and caps inspection will be the first thing to do.
If you can post the pictures, that will help a lot. Look at the inverter board to see if you are getting 12~18vdc feeding it, also look for caps with leaking/bulging top.
See some pictures here:
Posted on Jun 29, 2010
Testimonial: "Example pictures quite helpful. I do some more visual checks and then post pictures of my power supply and ask for test locations. Thanks"
you will need to check weather the 24vdc supply for the inverter board is good no drop voltage. if no supply check the power supply board. then you should check if their is a inv_on signal at the power inverter board around 3v-4.4vdc . if goes out during power on tried to disconnect the supply going to the inverter board to ensure if their is a shorted parts in the inverter board. if the inverter_on signal also goes out even with out inverter board connected that was mean you have problem in the processor board.
Posted on Nov 02, 2012
Im having similar problem and with my limited knowledge of lcd tvs and the voltages ALL being good except the pwr on or sw on voltage from the main board to the power supply which tells it to switch everything on Im guessing that something is going wrong on the main board. In the condition where it freezes it (the power on V) which switches everything on i get varied voltages such as 2.5 or 3 or (the normal 5v) and then when nothing powers up (blank screen) i read 0v on pwr on voltage but all my other voltages are corect (24v to inverter, 12 v to main board, 5v, etc.) Im guessing from researching this is that there is in improper voltage somewhere in the main board circuit. I have been unable to find it so i may order another board and post back.
Posted on Aug 21, 2013
not yet solved, I want to replace IC NO 1200AP40 but I want to replace other part no as the previous is not obtainable in our country TANZANIA please help
Posted on Sep 21, 2013
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