Vertical line in the middle

Failue of the vertical section, could be the drive, the power to the section or even some discrete componets. Unless you are familiar with electronics , get some help to ceck out on these circuits, could not be major but to get themain culprit will require good probing.

If the line is going across the screen from side to side that means you have lost vertical deflection, and you don't want to run the set like that because you can burn that line into the picture tube. Most likely would be the vertical output ic, probably with a 400 location number, example IC401, could also be a capacitor in the vertical circuit most are close to that IC.

Did you mean the picture is collapsed only in the middle horizontally(white line appears on the middle part of the screen)?
If that is the case, maybe vertical IC failed or loose connection.

vertical output ic needs to be resoldered. careful leaving that bright line displayed on the screen as this will cause a permanent phosphor burn into the tube. this can not be corrected once burned unless you replace the tube. mch

Hello,
Sounds to me you have a cold solder joint ( loose solder connection ) on the printer circuit board around or on the vertical chip or on one of the vertical capacitors. You may also have a bad vertical chip or a bad vertical capacitor, but I doubt it since it did come and go. I'de get a soldering iron and some solder and touch up the connections. I will remind you that you need to always excersise saftey by making sure, before removing the back, unplug the TV from the wall, and use care not to come in contact with the large red wire going to the back of the picture tube as the picture tube can be turned off and still store lots of voltage ( up to 35,000 volts). Always stay safe and when soldering, use care not to run solder across places that will make a short.
Good Luck and I hope this helps
Ed Meshechek ( Radio Man )
NC Electronics
Mills, Wyoming
307-266-4675

for short circuit it will show  like this if no short circuit
i think ur tv display tube has dead if it is in warenty pls exchange the tv

does any one can send me the schematic of TOSHIBA 32A40? I have a vertical problem and I need to locate the vertical IC or trancistor.
I only see a horizontal line on my Tv.

thanks.
[email protected]

http://www.vancebaldwin.com/models/?TBA53AX61

Part Number Decription 23236623 #T461 FLYBACK TFB3086AD 24083013 #Z401 NOTE **SEE 50A61 FOR MAIN PARTS LIST ** 23549258 BEZEL 23427995 DOOR 23905094 IC STK392110 23311899 LENTICULAR SCREEN 23405040 MIRROR 23565302A OWNERS MANUAL 23311859 PROTECTIVE SCREEN 23306370 REMOTE 23311892 SCREEN FRESNEL CDSMPJTV03 SERVICE MANUAL (CD) 23527210 SPEAKER GRILLE

The vertical hold keeps a normal picture from rolling either up or down. You don't have a normal picture (raster) here.

The problem you are having is a vertical deflection problem. The screen is being compressed to a thin white line. It's probably a defective vertical output module or transistor. This part is not too expensive. Less likely would be a vertical deflection coil, which would be more expensive because its usually glued to the picture tube and harder to replace.

Good Luck!

- Jim

this symptom, sometimes called the tube light effect, it is characterised by a bright thin horizontal line across the middle of the screen. this symptom is caused by a breakdown in the vertical deflection circuit. hence maybe the trouble maybe in the vertical oscillator, amplifier or output circuits. but if all i have said is not clear to you, better bring it to a qualified tv technician. good luck!