The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main 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. Pull up older posts.
http://electro-medical.blogspot.com/
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.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. .
SOURCE: TV will lose picture then go into standby!
Yes it is a temp problem as you found out for your self Great call on that BUD.. the best thing to do is contact sharp to see if they have had simular problems and if there are any recalls on this model . If not they will instruct you where to send the monitor into to be fixed.
SOURCE: lc -30hv4u
This is just the beginning, it will happen more often and at some point in time you will have the same problem some of us are having, it will click the monitor power light will lite up green and the ACV box light will come on green for a second and then go red again and the lcd screen will go blue. Unit will not power up. I have this problem and it has started the same way, I did the same thing and nursed it for about 6-8 months now no matter what I do it wont come on, I have tried no power for a day, cleaning, banging acv around tapping, slapping cursing and still nothing. So if you ever find this problem I would love to know what the fix is and who can perform it, I live on disability now and cannot afford just to let somebody charge me out the wazoo and say they cannot find the problem or tell me something like it needs a whole new ACV just because they don't know what to do. If I learn anything I will let you know also.
SOURCE: Sharp LC-37HV4U not turning on
Thank you, psxpirate25!!!! It worked. I had to repeat it about 35 times. It came up in a factory setup firmware mode. I could see the video behind it. Pressing buttons on the remote only switched between the settings menus. I power cycled it a couple of times and had to do another 35 times. Finally it worked! Totally awesome!
SOURCE: power light blinking green and cannot turn off or display anythin
power inverter board is dead.
need a new one.
SOURCE: The firmware do not finish.. just turn off and
Unplug the ac power cord from the wall for 30 seconds then hold down the power button on the tv, not the remote, and while holding down the power button plug the ac powercord back in and continue holding the power button untill the tv turns on. This is a hard reset back to factory defaults.
The LG Rumor cell phone is a practical and easy-to-use device that offers two modes of typing through a regular number dial pad and a full QWERTY keyboard. Like any cell phone, the LG Rumor can have errors that prevent it from working properly. Troubleshoot common issues by updating software or checking the power cycles.
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