Question about Mitsubishi VS-5043 50" Rear Projection Television

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I have an old mitsubishi TV model cs 35203 serial 515512, and all that shows up on the screen is a thin horizontal line through the middle.

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You either have a cold solder connection on the vertical output IC401 or a failure of the Vertical output IC altogether. The part number should be labeled clearly on the front of the chip and is likely LA7836 or LA7837. It's difficult to reference parts on a set this old. Remove the chassis and visibly inspect the solder connections. If they look good, replace the chip. Good luck

Bill W
integrityhomeworx.com

Posted on Mar 14, 2011

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1 Answer

Owners manual Mitsubishi Cs 35203


You can visit the Mitsubishi site but as this is a old set----Also try to Google that model number with "manual" to see if you can locate one.

Jun 11, 2012 | Mitsubishi Televison & Video

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Actually the model is cs-313050. its quite old. the problem is that the tv won't work in the way that when you turn it on (it won't even turn on anymore) there is nothing but a white or blue lineright in...


you didn't mentioned if it is a horizontal line but i think it is.
It seems that you have a faulty vertical I.C. that scan vertical line.Because you it is defective you've lost the vertical scanning thats why you have only a horizontal line on the screen.

You will confirm it by powering on the unit with your cable signal present.When the sound is present on every channel it is confirm that you have a problem on the vertical section. You must look for a qualified technician to solve the problem....

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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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1 Answer

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Yeah, thats the tube, buy a new one. It's 15 yo anyway, let it go ;) Best of luck!!

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1 Answer

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Mitsubishi cs 35203


That sounds like vertical failure. Does the blue line run across the screen from side to side? Try resoldering the vertical output IC and see if that straightens it out. This is sometimes been a problem with that chassis. Let me know how you make out or if you need additional help.

Mar 29, 2008 | Mitsubishi VS-5043 50" Rear Projection...

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Thin Horizontal line through tv blank screen.


Replaced vertical IC ( la78041 ??>.. Or La78040 ). Look for born resistor beside IC. Replaced capacitor 100uf 35V too!!! Good luck !!

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