Toshiba 36HF12 TV has a horizontal bright line across no picture

He may have caused some type of damage to the picture tube, but usually rainbow effects happen when magnets are present. Perhaps the ball became charged with a large amount of static, which then discharged across the tube, damaging the controlling circuits.

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.

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

You're losing your horizontal voltage that drives the fly back transformer. Poking around inside can be hazardous to your health since you have to worry about high voltages present on the picture tube even when the TV is off. You may still be able to get parts for those old TV's but they may hard to find. You can try here, but if you have no background in TV repair, it will be pointless.
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my friend if you open the tv carefully look to see if the tube itself has light, or if you have high voltage i coulbe many different things.wish luck!!



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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.
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Vertical defection failure. Common failure. Pretty easy to repair ($50-75?). However, my general rule of thumb is not to waste any more money on TVs over 10 years old. Too much other stuff in there ready to fail as well.

Timm,What you have Is Vert Failure,Toshiba is Noted for Bad Conns On the Vert Ic,Pull the Back off and Gently tap with a NonConductive Inturment and watch the Sceen Look for Heatsinks and Tap on those,If you know,or you caqn solder do so ,Do run the tv for a long time with no Vert or it will Cause BURN IN in the Phophurus

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!

I really dont understand the problem Could we see a picture of this please?