White horizontal lines on screen

No reset. You need to repair the convergence circuit. See my tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics for help.

Thanks for using FixYa and for the great rating.

hardrocko

It needs to be repaired by having the convergence ICs replaced or resoldered (if intermittent).

Parts are STK 392-570. Be sure to use thermal paste on the ICs.

Hi,If you are experiment color distortion,pixilation,white dots,vertical or horizontal lines it might be time to replace the DMD board.

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

it sounds to me like your tube has gone , go to your local tv repair shop and order a new tube its quite cheap to do so and they should be able to get it you quite fast.

sounds like the red convergence Ic is weak ready to go out. try replacing the ICs around 10.00 do the blue as well as that will be next.

I found a this SITE that carries that convergence assembly for your TV.
Good Luck.

1) Loss of color = bad solder connects on signal board

2) Loss of pix = probable CRT coolant leak onto signal board
Have a technician check it out.....can be expensive......T.

Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok

screen control must be turned down ,called retrace lines