27" Mitsubishi CS-263012C from 1994. Split screen (same picture on both sides with black bar down the middle), no colour showing, audio is fine. Cable and DVD/VCR hooked up through the TV. Have we accidently hit some buttons we can easily fix to get the picture back?

you need to lift up the black plastic covers with a screwdriver or another flat tool at the front bottom side and split the one in the middle on the top - slide them away -then you should see the screws holding the rack to the rail.



split one side and lift the bar away to see screws

This may be due to a faulty Timing Control board (TCON board). I had a similar problem with my Samsung LCD TV picture being split vertically down the middle. The image on both halves appeared fuzzy and in reverse (mirror) including the menus. I replaced the TCON board and the problem was resolved.

on your remote you need to hi the pip button. thats picture in picture. it allows the screen to be split so you can watch two things at once, though most equpiment doesnt support this function yet so its useless.

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The GPU has overheated that is what causing this problem.

You will need to stop the heat build up and get it repaired - you can even do this with a good guide or send it in.

The problem is in the vertical section of the main board. Bad capacitors and maybe the vertical IC. If you are not inclined to be a tech you will have to take it to a shop.. I don't know what they may charge but I normally get $69- $89

may just need servicing, adjustment of the picture shape like parallel, etc service man can do it, its impossible for us to help.

or the high voltage is bad

Black bar caused by a short IC on the ribbon of the plasma panel. Unfortunately it requires a new plasma panel. Cost of a new unit.

Go page by page with the buttons on front of set ....what
you are seeing is called a text box and it is part of the CC feature...use menu & up / down....left / right buttons.....T.

i think this is the called picture in jail. this might be due to 1 power supply reg.poor or filter cap dry. 2 loose or dry joint nera hor. output section or capacitor in eht section.

If a black square appears on the screen and you can see the picture around the edges, it means that the closed captions are on and set to "TEXT". Go into the TV's menu, navigate to the closed captions page and set the captions to OFF.