Screen shrinks When i first turn on my tv the screen shrinks in and out until the tv warms up. What would be going out on it? Thanks

If your TV is shrinking and expanding you can get a repair kit from www.TvRepairKits.com for less than 50.00
Comments: May 19, 2009- If your TV is shrinking and expanding you can get a repair kit from www.TvRepairKits.com for less than 50.00 May 22, 2009- Here are the most common symptoms and example photos of this problem.

• Video Shrinks and Expands - Over and Over - After warming up it typicaly works.
• After a few weeks the shrinking stops and you loose all video and audio.

SOLUTION

Its a fairly easy DIY job. Check the site www.TvRepairKits.com

Their kits include a photo instruction guide, parts, email/phone support, etc.

Common problem and fairly easy to fix. 

Problem
Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!

Solution:

Check with the site www.TvRepairKits.com. They have built a kit to fix this problem.

If you have the following symptoms check the site www.TvRepairKits.com . They have a repair kit for this problem. 


Screen shrinks and expands - may or may not correct itself after the TV warms up.

After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!

yes you can take off the cover but carefuly and in the back of your tv you will see the flyback and has 2 button one fro focus and other G2 then rotate the focus button till you will see no blurry
that is all if you dont know how bring some frend who can and tell him to do that

Since the set works initially, there are likely poor solder connections at the vertical IC. If this is not addressed soon, the IC will fail and need to be replaced. The vertical IC is a small flat IC with about 11 pins or so that may be marked LA7837 or something similar. Try resoldering the pins first. If that fails to resolve the problem, replace teh IC. Feel free to post the marking here so I can verify you have the correct one.

Dan

just do this, resolder the whole circuit board and crt board.

you can ask a good tv Technion man, since if it happens to be like that then in coming day u will have to face problems. So since this very common problem which will arise in old tv. Actually the real problem is that, some parts in the board may have become weak or the molded part in the board may have fallen down ,so changing that particular part or molding again may fix that problem. Since i am not an Technion I don't the right terms to help u.I have see this problem in many places and don't worry your picture tube is well and good.

When you first turn on the tv, It goes from small picture to full screen and several corors around screen for a few minutes,I guess until it warms up? Could you please help? Thanks!

Does it shrink vertically as it warms up? could be a bad capacitor in the vertical circuit.

It is in the power supply or I would guess most likly in the horizontal sweep section of the tV set. MOST of the time, if the power supply is going lower in voltage, the set will shrink in width,BUT will also shrink in vertical size. If this is not happening, then I would say it is in the horizontal drive circuit. This is not a circuit a user should be experimenting with, as this is the HIGH VOLTAGE circuit and can pack a mean punch! Please if the sets less the 4 to 5 years old you may want to concider an estimate or replacing the set. Its all up to you. GOOD LUCK