There is a bow in the picture top and bottom of screen

Yes, this is rare but I have seen it before--not fixable if it is what I think it is----It is what is called a Dome effect---the shadow mask in the picture tube is actually contracting and or expanding depending on temperature---

Directly behind the phosphor coating (the stripes that you see on the screen) is a metal screen--the holes or perforations in it line up with the stripes on the phosphor screen.

Some masks either have a material or a defect causing the dome effect----Not likely to be anything else---a Pin amp problem will not usually act the way you describe but a shadow mask inside the picture tube will act exactly that way.

mcnamara724,

Bad convergence circuit. See my tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics for repair help.

Thanks for using FixYa and for the great rating.

hardrocko

CRT pictures that "bow-in" on the edges usually indicates that the high voltage power supply is failing.

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

• Screen Looks 3D
• Colors wont align
• Screen may look distorted
• No Audio/Video - TV makes a chirping sound.

Problem #2 CRT Fluid has clouded over. Symtoms

• Dull looking video
• White looking video
• Halos around objects
• Red/Orange looking video

You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Is the convergence option still listed under the on screen menu setup options, or has it disappeared?

go to hatch screen adjust all colrs to make white color boxes , also adjusts linear lines

nbad convergence ic , this need to be done by a profecional tv tech , because need to check for the pico fuse and resistor around the area

I will strongly advise you to replace the two STK392-120 as a pair. and this will cure your bowing picture problem. You may need to re-converge your set. best of luck.

bad convergence ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

you have pincushion problems and may convergence may require a setup/call for service.