My T.V.'s picture suddenly disappeared with different colored lines vertically on the screen. We had sound but no picture. We called Memorex and they told us to reset it. We hold the power button for 5 seconds and then unplug holding the power button for 1 minute. Plug it back in and we should be all set. We did this 1 couple of times but no luck. As a matter of fact part of the screen now has a black space. What parts will be needed to fix this?

What causes vertical colored lines on a TV screen? When a TV is showing vertical colored lines, a loose wire cable in the TV might be the cause. If you knock on the back of the TV, the vertical colored lines MAY disappear temporarily. This is a sign that a cable is loose or the T-Con board is faulty.

https://removeandreplace.com/2018/05/01/tv-has-different-color-vertical-lines-on-screen-how-to-fix/

change your device cables or try to put at a pc to check if isworking your pc

What is the exact model number to your Poloroid TV?

By now you've probably replace this with a Flat Screen LCD, LED or Plasma unit. But the answer to your original problem is a loss of vertical drive. Possibly just a bad solder joint @ the vertical IC.

The problem is the LCD panel went bad, it can't be repaired, you have to replace it.

Go to the last page of troubleshooting in the manual and perform the system reset procedure. Basically hold the Wega "arrow up" as you manually switch the TV off. It will automatically switch back on and reset. I had only vertical colored lines on the screen, with audio but no response to any remote control functions. The rest worked perfectly.

Most likely a bad Vertical IC or bad connections on the vertical IC. don't continue trying it on. If you have a bad connection it could do more damage. You also could damage the CRT ( picture tube ). If you remove the cover and look at the bottom side of the PC bord with a good magnifiing glass you may see what looks like rings around the leads comming from the Vertical IC. The Vertical IC is mounted on a heat sink usually towards the front of the set looking from back. If you do see the rings around the leads try reheating with a solder iron. If this dosen't fix you most likely need a new IC.

you didn't mention the model and make :)

My Konka LCD model KDL32AT23U Displayed a picture, then vanished, showing different colored vertical lines in horizontal blue bands.Then I could not turn it off with the remote or standby button on the side.Only with the main switch.What's wrong??
This is the same problem posted by kukish on july 26,2008

There is a capacitor going bad and is not charging all the wayor it takes a while to charge,is an electrolitic cap so it has polarity and the replacement needs to be conected the same way,the circuit board has the marking were the negative and the positive are and the cap is marked too,he should be a 1.5 microfarad at about 160 volts and sometimes is close to the vertical Ic,if you are familiar with tv service this information should help but if you are not too familiar seek the help of a servicer,it should not be too expensive,the vertical IC might need to be resoldered.Let Us know if you need more help.