My tv is stuck in video mode .How do i manually fix it to play the tv

You did not mention the model number. Anyway, see page 26 (PC Connection) of this manual. Supported modes are given here. If video mode does not one of them, Format Not Supported will be displayed.
SYLVANIA LC320SS2 OWNER'S MANUAL Pdf Download ' ManualsLib

To save your changes, press [POWER] on the TV set. "Preset Memory" will appear, then the set will power down.

If you do not have a remote for your Sylvania TV, you can try using the buttons on the TV itself to navigate through the settings and change it back to the video screen. Look for a button on the TV labeled "Menu," "Settings," or something similar, and use the arrow buttons to navigate through the options. You may need to consult the TV's manual for specific instructions on how to navigate the settings without a remote. If you don't have the manual, you can try to find it online on the Sylvania website or by searching for it on the web with the TV's model number.

Google Panasonic tv/vcr <model> manual

Your tv may not be compatible with progressive scan mode. Change the latter.

Play around with the menu button on the TV if it has one and see if there are any options to change it.

Hello
Just get into this site from you can download the user manaul of your Sylvania Tv. I think that to select the inputs, you must have its remote control. If there is a "Meny" button on the front panel of your TV, you can select it. Just download the manual and go through it. It is absolutlely free download. OK.
www.manualshark.org/s/sylvania+manual+mts+sap/page:2

try to switch to video mode on the TV

hit menu and then hit the up volume button once and thn you should have it by the way i cant play games on mine how r you playing games on yours?

go up to your TV and go into the menu. Go to the channel selection and run the auto select for channels. This will take some time but the TV will end off the first channel found, the only thing is you cannot get back into video mode without the remote