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Mitsubishi cs-35401television televison was working fine then the picture went to a straight horizontal line across the middle of the scree. I still recieve sound fine

Posted by jim2 on

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Vista Electronics

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A horiz line across the screen requires repair of the vertical circuit. Likely, a fresh vertical output IC , a couple of caps and
maybe a B+ resistor in the power supply diode circuit next to flyback..........................................T.

Posted on Nov 23, 2007

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HORIZONTAL FAILURE AND LINE DOWN THE SCREEN. REPLACE T5A1 LOCATED ON PCC-3-PCB. PT#349P145030(FOR CS-35401,CK-35402 ONLY) Hope this helps! Troy

Posted on Sep 11, 2007

  • Anonymous Sep 11, 2007

    Is this line from top to bottom, or left to right? Please Verify!

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1answer

Mitsubishi cs-27tx1. Only has a thin horizontal line thru middle of screen

Hello

Total Vertical Sweep failure had occured in your TV. That is there is only horizontal sweep there, and the whole picture sweeps horizontally and you see a horizontal nice line across the screen, at the middle of it. In this case, all other buttons will work, and sound output will be Ok.

This fault is normally due to Vertical Sweep Out Ic trouble. You have to open the back cover of your TV, and have to pull the main board out. Locate the Vertical Output Ic. It is easy to locate it. There will be four wires going to the deflection yoke assembly [the coil fitted alongwith the picture tubes' neck]. Amoung them, two will be thick, and is carrying horizontal sweep signals. The other two wire are comming from vertical sweep section. Follow the wires and find out from where it comes from the main board. Somewhere near it orginates from the main board, you will see an Ic usually screwed into a heat sink [ a metal plate or so]; and it is vertical output Ic.

Check first, whether there is input voltage [working voltage] come to it or not. Sometimes an open resistor problem may occur to show this fault. Normally vertical section will have a voltage rating between 18 to 35VDC. If that voltage is there, surely the Ic said above is damaged. Screw it out and desolder it from the mainboard, and go for an identical type and number, replacing it will solve your problem.

Take all precautions when we works with an elctrical equipment. Keep away children and never allow even stand beside you while you are working, and let an adult beside you as a precaution. Never use metal chair. Do wear a plastic of rubber shoes. If can, keep matted the floor also with carpet. Ok
Wish you success.
Gopakumar G.
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Single horizontal line in middle of screen

Yeah, thats the tube, buy a new one. It's 15 yo anyway, let it go ;) Best of luck!!
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I have a Mitsubishi CS-3125R that displays a horizontal line with sound. I suspect the horizontal transistor is out and cannot find one. Any ideas?

You are misleading yourself. When you have a horizontal line across the screen it means that the vertical circuit is not working. You see, the vertical circuit moves the beam up and down which is not happening. The horizontal circuit moves the beam left and right and it is working. Your set probably needs a new vertical output IC and some electrolytic capacitors that work with it. The caps dry up with time and harm the output IC.
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Screen is black except for thin line in middle of screen

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You have trouble with the vertical deflection circuitry. Probably something in the driver circuit or power supply to the driver. Maybe even a cold solder joint since it comes up after a little warmup.
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Picture is reduced to a straight horizontal line across the center of the screen.
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1993 tube 37" mitsubishi

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TV problem

Hello Barbara76,
Is this a Horizontal line (inch or two) across the screen, if so
the fault could be either a faulty Vertical IC,Faulty Electrolytic
capacitors or just simple dry joints.

Regards
Patrick
P-Tronics
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