My tv model lc320ss9 power supply went out. we were watching tv and it went out

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://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.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

You probably have a bad power supply module inside. You didn't supply a model number? If you do a search on youtube.com you may find a video detailing your problem and a possible fix. A power supply kit consisting of a fuse, pulse width modulator Field Effect driver Transistor, plus several diodes, and a resistor or two WILL generally fix your problem. Just did this for a friends 32" and it works again.

Replace the power supply board. You can get the replacement power supply board from www.tvrepairworld.com

Hi, my name is Shannon and I am with Suddenlink. Please visit our self-help site for information on programming your remote control here: http://help.suddenlink.com/Television/Pages/RemoteControls.aspx. Thanks!

Return it where u bought it and get a new tv replacement,tv have power supply board issues.That the board where the tv power a/c cord plug into it.Or not possible trade in for another new tv,call Sylvania for warrenty service tv repair fix.

It means your power supply went out. I had a sony with the same symptons and it cost 140 to fix it.

hi! i have a couple of codes for your tv, just try them, 1004, 1007, 1018, 1027, 1047, 1056, 1057, 1059, 1060, 1061, 1103, 1124, 1145, 1150, 1153, 1279, 1296, 1387, 1464, 1483, 1046, 1465, hope this helps! goodluck!!!

Power board is dead.Must replaced to solved this problem.

You have a short somewhere in the load for the power supply. Probably the horizontal output transistor and the flyback transformer. You need to have it checked out by a tech. You may want to get an estimate. Stargazer