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Are you using a remote control or the switches on the TV?
If using a remote;
First turn the TV off at the power point then wait for 10 seconds.
Then turn the TV back on
Then attempt top adjust the volume using the manual settings on the side or bottom of your TV, if that works then you may have a remote that either needs new batteries or does not work.?
Can you turn the TV on and Off with the remote control?
Can you change channels with the remote control?
If you can do both the above it would appear that the remote is working OK.
It seems that the micro-switch to turn on power is damaged. It can be replaced, and can be bought from most of the electronic spare part selling shops. De-solder out one among them as sample, because, pin configuration should be identified when you buy it. It wont cost more, a cheap component.
These are the universal remote control codes to Vivo TV. 0004 0005 0009. Check this link to know more codes and proceedings to other brands of remote controls, and buy one remote control that has setup codes with your TV. The above said codes are for GE remote with Vivo TV.
TV won't turn on • Press the TV button. Make sure the TV is plugged in.• Check the wall receptacle (or extension cord) to make sure it is "live" by plugging in something else.• Something might be wrong with your remote control. Press the POWER button on the front of the TV. If the TV turns on, check the remote control solutions on page 26.• The front panel controls may be locked (disabled). Use the remote control to unlock the front panel controls by selecting the Lock Fr. Panel in the PARENTAL CONTROL menu and press OK (box won't have check mark).Buttons don't work • If you're using the remote control, press the TV button first to make sure the remote is in TV mode.• The front panel controls may be locked (disabled). Use the remote control to unlock the front panel controls by selecting the Lock Fr. Panel in the PARENTAL CONTROL menu and press OK (box won't have check mark).• Unplug the TV for two minutes and then plug it back in. Turn the TV on and try again.TV turns off unexpectedly • Sleep timer might have been activated. Go to page 24 for instructions.• KidPass might have been activated. Go to page 21 for instructions.• Wake-Up timer turned on the TV and no remote or front panel buttons were pressed for two hours.• Electronic protection circuit may have been activated because of a power surge. Wait 30 seconds and then turn on again. If this happens frequently, the voltage in your house may be abnormally high or low. • Unplug TV. Wait five minutes. Plug it in again.
as you have seen inside that no power & no light.
problem seems to be in power supply.
1 check fuse.
2 check switching ckt.
3 check for loose contact or print break.
4 now if you get power on & still tv is not ok then check for hor. output transistor in hor. output stage.
if you are not tech person please do not try to fix it as high voltage is there inside.