No picture only sound

It is a new tv.Take it back where u bought it and trade it in for another tv.This tv have those 2 LCD long inverter boards have problems.These 2 long LCD inverter boards are to help the tv LCD screen panel to have a backlight for the tv LCD screen to produced a picture.

The logic board on your LCD panel is faulty.

ther is technical error

With the remote go to the Closed Caption menu and make sure it is turned off.

Let me know if this helps
Lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

Sorry to tell you but JVC is a well-known un-reliable brand and if it's cheap, probably even worse. U may have screen burn from leaving a games console on while plugged into the tv, even if its not showing the game, it will burn it onto the screen. :(

Try turning off the Closed Caption..

i have taken the tv to repair shop a circut board has went on it

Pls more info; what do you mean tv on, picture froze? you are watching on tv chanel, do you use cable? I can help you but need more details.

you have to get into the tv to do the adjustment. take the cover off and then look for the CRT tube and follow the yoke cables that will lead you to the printed circuit. you should see some small tiny knobs there. something like vertical phase or horizantl Phase..you need the verital to adjust the vertical size of the pic..good luck

check cold solder vertical circuit