Does anyone know how to fix a Sony Tinitron CRT displaying vertical white scan lines on left side

[coedu]

The vertical white line blocks gameplay a bit. The colors of the tv are perfect. Very noticeable when playing nes games.

 

[CoolMe]

Hmm.. Might the tube itself aging.. Though i'm not a tv technician or anything.. It could also be components that control the color reproduction they could be failing, though i'm not sure if it's a thing for crts or not..
Good luck to you anyways..

 

[FriendlyPolygon]

View attachment 322227
The vertical white line blocks gameplay a bit. The colors of the tv are perfect. Very noticeable when playing nes games.

Is this effect seen when there is bright image or only on blank black screen? If yes then you can try to enter service menu and adjust image position and it's width/height to move this line away.

 

[Alexander1970]

Good Morning,dear Sir.

@JuanBaNaNa have such a Thing,if I remember correct.Maybe he can help you.

Have a very nice Day and good Luck,Sir.😊

 

[JuanMena]

Yes, it can be different problems.

First and most common, the Yoke moved needs to get recalibrated by manually centering it.

Second possibility, it might be a faulty component on the board that handles the vertical lining. Might be a fuse, a capacitor, dirt, anything that interferes with the signal.

Third one (very unlikely), possibly a service problem, needs special Service Menu code. Search for it and input the button combination with original Remote.
Search for a V-Blank option and change the settings

Fourt possibility, the Earth's magnetic field might be causing this. Solve the problem by moving your TV elsewhere.

Fifth possibility, might need to recalibrate potentiometers on the board of the TV.

 

[JuanMena]

Ah, Flat Trinitron... is your TV bigger than 20"? @coedu
If so, it's normal on Trinitrons... considering it's SONY, it kinda sucks.

Unspoken CRT Rule:

Flat Screen CRTS bigger than 20" will always have these kind of problems.
Round Screen CRTS bigger than 20 won't.

If you still want a Flat CRT, get a Computer Monitor or a smaller than 20' model consumer CRT.

 

[coedu]

Yes, it can be different problems.

First and most common, the Yoke moved needs to get recalibrated by manually centering it.

Second possibility, it might be a faulty component on the board that handles the vertical lining. Might be a fuse, a capacitor, dirt, anything that interferes with the signal.

Third one (very unlikely), possibly a service problem, needs special Service Menu code. Search for it and input the button combination with original Remote.
Search for a V-Blank option and change the settings

Fourt possibility, the Earth's magnetic field might be causing this. Solve the problem by moving your TV elsewhere.

Fifth possibility, might need to recalibrate potentiometers on the board of the TV.

Hello yes it’s a 27 inch. Yeah it’s sort of annoying at times it only displays on a dark color though but when playing nes games the left corner seems taken off or chopped of a bit. How would I recalibrate the yoke?

Post automatically merged: Dec 21, 2022

Is this effect seen when there is bright image or only on blank black screen? If yes then you can try to enter service menu and adjust image position and it's width/height to move this line away.

Yes, it only shows on blank dark screen. When the image is bright it doesn’t. Also when playing nes games I can see on the left that the image is slightly chopped of a bit

 

[JuanMena]

Hello yes it’s a 27 inch. Yeah it’s sort of annoying at times it only displays on a dark color though but when playing nes games the left corner seems taken off or chopped of a bit. How would I recalibrate the yoke?

NES chopped off in left corner?
Are you sure it's not because the NES utilizes Horizontal Overscan?

Also, are you sure it happens with all consoles too? Otherwise it means it's just the Horizontal Overscan coming from the NES.
There's a possibility that lowering Brightness and Contrast in your TV menu might solve this issue, as bright pictures might be too much (energy) for the CRT board, so also check that.

If you still believe it's a calibration problem, you have, first, to see if your TV has potentiometers to modulate Horizontal/Vertical scanning.
It MUST have some potentiometers.
If there's none, you must move around the yoke while the TV is ON... and you must know what that means, no?

Post automatically merged: Dec 21, 2022

Oh dear god, I'm fearing an answer in probably 1 month.
So, happy new year I guess.

Anyway, I think I might've missed seeing your picture.
That bowing on the left side is called Pincushion distortion. And happens when a capacitor in the board that handles Horizontal image is dried or leaking.

DO NOT MOVE YOUR YOKE.
DO NOT ATTEMPT TO MOVE POTENTIOMETERS OR SERVICE MENU SETTINGS.

Search for a service manual of your TV model (I think you have a SONY KV27FS-100 ??? ... LOOKS LIKE IT) And look which board is the one in charge of Horizontal picture.
With a multimeter look for the bad capacitor, but to be honest, it should be in plain sight given the amount of deformation in your picture.

Replace capacitor(s) with new ones. And make sure you use good electrolytic capacitors.