The picture in our tv is concave and we cannot make it straighten out; it was working fine and then the colors were out of line and we realigned them but the picture curves inward. It looks like a computer monitor when someone has readjusted the screen width and height.

The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergene board have dead 2 STK convergence ICS and some or all of it resistors are dead too.These parts on the tv convergence board,must be replaced to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Projection sets have two very common problems.

The first common problem is convergence


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 more information and a DIY convergenece repair kit with instructions from the link below.

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

*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 using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Your reference to concave picture suggests a high voltage problem and not convergence. If the raster can't scan from left to right , top to bottom, your having High voltage trouble. if your colors are not dropping on top of each other that is convergence. I would suggest it may be time to consider a purchase of the new HD set for the cost of this repair. good luck

This link has the instructions on how to fix this problem and other similar problems. You have nothing to lose, so I recommend that you try it.

http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

This works with the two other colors, blue and green also. Not all models of Sony Projection TVs have the red, green, and blue pots in the same order as the picture that is listed on this link, so you may want to google search for your model's service manual. The service manual can also help you be able to remove the cover for your particular model of TV. I was able to find the service manual for my model, and sure enough, the order of the pots are reversed on mine, so I would have been adjusting the wrong color. Read all of the comments on this link too, because you can find other helpful tips and may even find someone with the same model of TV as you that gives more specific instructions for your model.

You may also find your model's service manual here:
http://esupport.sony.com/US/perl/index.pl

I hope this helps you!
Fare well. :)
Iconoclast

P.S. you can also clean the mirrors and dry dust while you have it open.

Sounds like a capacitor in the power supply is beginning to fail.Unless your good at this type of repair, I would call a tech to have it serviced. And I would also not use the set until the problem is corrected, or it could get real expensive to fix.

replace fuse looks like cap next to flyback transfomer FL231 it will be the one in the middle.there are 3 of them next to FBT.

The convergence chips in your tv have gone out. They control the three picture tubes and align them so that they create one picture on your screen. I recomend having a qualified technican replace them and realign you convergence. Thanks.

Convergence circuit repair = replace STK392-570 IC's....
Located on center circuit board on heat sinks................T.

Please rate this solution............

you can get it your tv fix the problem is in the IF amp and video circuit.a convergence will also be neeeded.the tv is old but can give you some more life call a tech they will be your tv doc.

sony trinitron colour 29ins tv its black and white not colour but the teletext is colour