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s.abdullah
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PostPosted: Fri Nov 29, 2013 7:30 am    Post subject: tv Reply with quote

I have a onida color TV. It's sound is there but no picture is there. please suggest me something to how to repaire it. I think EHT is not making.
Send me email at below given address,
[email protected]
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train123



Joined: 26 Jan 2010
Posts: 88
Location: Canada

PostPosted: Thu Mar 13, 2014 2:48 pm    Post subject: onida color TV. It's sound is there but no picture is there Reply with quote

More info is needed to help you. Is this a CRT, LCD, LED or Plasma TV?
I'll assume LCD/LED for this suggestion.
First you have to determine if it is the loss of video or the loss of the backlight that is your problem.

1) if the backlight is okay, verify by putting the TV in a completely dark room. You should be able to see some light glow from the screen or the vent holes on the back of the set. If you see light, then your problem is the video circuit. This can be the main board or the T-Con board.

2) if the backlight is bad, while you have a known good source on (Sound is present but no picture), take a strong light or flashlight and shine it onto the front of the screen. You should see faint images in the screen. If this is so, then you need to check the light tube/LED, inverter board, or power supply for +24 volts.
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