My zenith tv picture is bigger then screen

Hi,
Please check tv remote for Zoom/ Aspect Ratio button, press it to change picture size as compare to screen.
Hope this will help.
Thanks.

The red gun in the picture tube itself is shorted on. You will have to replace the picture tube itself to fix the problem. Probably want to just buy a new set. Sorry!

Adjust the Aspect ratio. The manual will tell you how.

It could be that the picture tubes have gone down on emission, there is a prcedure that can be tried to bring up the overall brightness but it is just possible that you will loose some picture quality. If it's a 1994 projo tv i am thinking of the three crt system, a gray scale alignment would probably correct the dark condition in your picture, again depending on how far gone is the emission in your picture tubes, if your projo tv is the dlp system, the bad news is that you could be needing some light engine repair. The color adjustment is possible with the availability of a service manual or in the case of the dlp system, light engine repairs or replacement are available from some on line stores.

This is applicable to Bell Television Services (Canada)
I solved the problem myself after two calls to both Zenith and Bell Television satellite service. On the bottom left of the Bell remote control there is a * (STAR BUTTON). Press this * button and within two seconds you must press the channel change button up or down. This will do two things. One; it changes the channel; and also changes the ratio of the satellite signal. There are three satellite signal ratio settings. Try this when you are tuned to a TV channel such as BNN (Canada) (Business News) or The American channel which has a stock ticker usually displayed along the bottom of the TV screen. Select the ratio (setting) that allows the stock ticker to be displayed......hope this helps.........Jim McP

The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix here http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

the variations of the supply causes that. a verticle stability be checked, specially semiconductors and capacitor changing valuas
Q= CV
Q=IT
THEREFORE

IT=CV=Q AND frequincy = f=i/t
so if I AND T CHANGES CAUSING MOVEMENT OF PICTURE

SO I is for time and T for tempareture

Welcome to FIXya

did you try to unplug it and plug it back in
or maybe goto the menu and try to redo the stations

make sure you have the tv pluged in to a power strip

hope this idea helps out if not please let me know have a good day:)

My picture is a double image and has a sideways hourglass on the screen. Please help me!

zenith have many problems with crt (picture tube) they comes be short or one or more canon fail, there are nothing to do, replace the picture tube, and thats a lot of money for an old tv...good luck ps adjusting the screen and resoldering the picture tube card could help but remember there are many dangerous circuit in a tv...