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What is the defect if my tv turns off while using it

My tv turns of while watching a program. We have to turn off the power button and turn it on after a few minutes. Then while watching again the tv turns off again. The time that the tv stays on becomes lesser.

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Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Apr 23, 2015

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Posted on Jan 02, 2017

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what is the unit model, and did you use the remote control or the panel of the tv in turning off or to exit the menu...?

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Power problem


1) test the outlet wall, plug a desk lamp and see if turn ON, if does the circuit is o.k and the contrary, reset the c.breaker
2) test the power cord for defective and repair or replace
3) test the main switch for short or open and replace
4) test the blown fuse inside and replace or c.breaker tripped reset
5) check the power supply for short in transformer, coil, filter, diode, rectifier,etc
or go to the repair shop TV
God bless you
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I have an RCA F31672ET TV. It was working fine for many years. Then all of the sudden it will not turn on with either the remote or the power button. I thought of using a universal remote to try and turn...


Hi - pretty common problem. Not worth fixing, I'm afraid. It is caused by a defective circuit which became defective with old age. the "EEPROM."

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Cannot program tv using bell satellite remote


Turn your TV on.
Press and hold the TV mode button until all the other mode buttons light up.
Press the blank POWER button. (If your remote only has one POWER button, press that one)
Press the UP ARROW button repeatedly until your TV turns off.
Press the POUND (#) button to confirm.


Cheers

Feb 01, 2009 | Hitachi 50FX30B 50" Rear Projection...

1 Answer

No Picture, No Sound While Watching


Resetting the TV
If the buttons on the remote AND the buttons on the TV case do not work (channels do not change and you cannot open or navigate the menu), the TV has stopped responding. Reset the TV as follows:

NOTE:
Some TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time.
1. Unplug the TV power cord from the power outlet.
2. Unplug any connected devices (DVD, Set-top boxes, etc...)
3. Press and hold the TV power button for five seconds.
4. Plug the TV power cord back into the power outlet and turn on the TV.
5. Open the on-screen menu to confirm that the TV is responding again.
6. Turn off the TV and reconnect the devices.
7. Turn on the TV.



LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.


Hope it may help you;

Regards;
VOTIT

Jan 29, 2009 | RCA L37WD250 37 in. LCD HDTV

1 Answer

Mitsubishi WS-65611 tv channels cannot stop scrolling


Check to make sure the channel down button is not stuck. If it is not the button is probably defective. Mits has had a lot of problems with the buttons.

Jan 21, 2009 | Mitsubishi WD-52525 52" Rear Projection...

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