Question about NEC MultiSync FE1250+ (Black) 22 in.CRT Conventional Monitor

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Vertical sweep on NEC FE1250 Help!

Hi I have a NEC FE1250. The vertical sweep seems to be cutting out leaving me with a thin horazontal line in the center of the screen. This is intermittant. It can go out for a few seconds to minutes. It will then pop back to normail. Ive resoldered anything that looks like a cold solder joint on the main board. I didnt want to desolder the shield on the board connected to the CRT unless its necessary. ANY Help would be great! I to send this to a land fill when Im sure it can be fixed!

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: on screen thin yellow and blue vertical lines.

Unfortunately the LCD is going faulty.. one or more of the "Driver" transistors that operates the LCD elements RGB, have faulted ON.. perhaps this link may help fix it. Otherwise :( http://www.wikihow.com/Fix-a-Stuck-Pixel-on-an-LCD-Monitor

Posted on Aug 01, 2007

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SOURCE: my NEC lcd1970NX is OK when Iturn it on and then

Sound like electricity bleed into the LCD matrix. It will need repaired or replaced.

Posted on Mar 17, 2010

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1 Answer

Whtie line in middle of toshiba tv cx32h60


The vertical sweep output has failed. Check the vertical output section circuits for any loose solder terminals. Check all the solder terminals of the vertical output IC. Resolder all the suspected solder terminals by applying a little more solder. If these do not help you, replace the vertical output IC.

Jul 07, 2012 | Televison & Video

1 Answer

Thin horizontal line across screen


Hello
You haven't specifed nothing about the model number or brand name of your flat panel teleivison. i assumes that it to be a picture tube based one and posts this solution before you.
A thin horizontal line across the screen with sound output is OK, is the sympton of total failure of vertical sweep. This may be due to failure of vertical output IC or loose solder terminals of that IC. The vertical output IC will heat up while working, and repeated heating and cooling may make its solder terminals to get loose. Just open your TV, pull out the board that contains vertcial output section, turn it upside down, resolder all the solder terminals of that IC by applying a little more solder, without making any solder bridge in between terminals. Check the voltage to the vertical output IC also. If this resoldering method does not help you, replace the vertical IC itself with same type and number will solve your TVs problem. OK.

May 07, 2011 | Televison & Video

1 Answer

H LINE


Hello
Your TVs vertical sweep, otherwise wertical scan, output section has got some trouble with it. there are horizontal and vertical sweep sections there for every picture tube based TVs. If horizontal sweep section fails, you will see a vertical line at the center of the screen, and if vertical sweep fails you will see a horizontal bright line across the middle of the screen.

To locate the faulty section and to get it repaired, you have to open your Tv. Open it, after detaching it from wall power socket. Locate the vertical section. It is easy to locate. There will be four wires going to the main board from the deflection yoke, fitted on the neck of the picture tube. Amoung them, two will be thick, usually colured as red and blue, and the other two will be thin. Follow the two thin wires, and you can see it to be plughed into a socket on the main board. Just put the board upside down, and follow the track of that two thin wires through the printed circuit boar. You will reach to the vertical outpuut section. Usually these sections are provided to work with an Integrated Circuit [IC]. screwed onto a metal heatsink.
Before doing any thing, just look onto the solderings of legs of that Ic for any loose contact. As it is very difficult to locate the loosec contacts, just resolder all the pin soldering at that IC by applying a little more solder. and check if the problem is rectified. As these ICs will heat up while working, it is natural to get its leg solderting loose after some time.
If it doesn't help. check the voltage input to the vertical IC said above. If there is voltage, and still it doest help, desolder it out from the board and go for a same type and number. Replacing the Ic will solve your problem.
If you wants any more assistance, feel free to contact me through Fixya. Ok

Nov 30, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

2 Answers

My screen close down from top to bottom and lives a horizontal line rite @ the center of the screen,,,,, Which component is mostly faulty in here ? and what kind a component is this ..?


Hello
It may be due to an Integrated Circuit [IC] fault. Your TV has lost its vertical sweep, and the is why you see a norizontal bright line across the center of the screen. All TVs has bot Hotizontal and Vertical Sweep to spread picture on the screen. When Vertical sweep fails, you will see a horizontal line, and when horizontal sweep fails you will see a vertical line at the middle of the screen.
n your TV, most likley the vertical Ic is faulty. This is a common phenomena in almopst all telivisions. The said IC is diretly soldered into the circuit board inside your TV. To replace it you have to open your TV. Take all precautions before opening the back cover of your TV. You are going to work with an electrical equipment, and keep it in mind always. After opening the back cover, just locate where the Vertical Output Ic is. It will be normally screwed to a heatsink plate, inorder to radiate heat from it while working. You can locate it by the following method. Different TV circuits has different positions to this Ic. Just look on the Deflection Yoke [the coil fitted on the neck of picture tube]. From there four wires will go to the main printed circuit board. Out of which two of them will be thick, and other two will be thin. The two thin wires are the carriers of vertical sweep from main board to deflection yoke. Follow the the two thin wires. You will see it to be pluged into one point at the printed circuit board. Just upside down the printed circuit board, after pulling it outwards, not disturbing any of the wirings, and look through the circuit track, to which point the tracks goes to. Somewhere near to it you can locate the above said IC.
Just take the main input votage to that IC. It will be normally 18v to 35VDC. You must have multimeter to measure this voltage. If the voltage is there, look for any loose solderings over there to the legs of that IC. If there is any soldering loose, the IC will not work properly, and vertical sweep loss will be the result. If there is proper voltage check the voltage at the output pin of that Ic. It should be almost half the voltage of the supply voltage. If it is not there, make sure that the IC has damaged.
Resolder it out from the board, and go for a same type and number. Replacing it will solve the problem. Normally vertical output ICs are not very cosltly. Here in India, all types of vertical Ics will have a price rate between 80 to150 Indian rupees, that is upto four American Dollars. Ok.

Nov 06, 2010 | Sony KV-35S65 35" TV

1 Answer

Green Line


Hi...there,
Well, there nothing you can do.... You've got a busted panel.

Aug 06, 2008 | NEC MultiSync LCD1765 17" Flat Panel LCD...

1 Answer

On screen thin yellow and blue vertical lines.


Unfortunately the LCD is going faulty.. one or more of the "Driver" transistors that operates the LCD elements RGB, have faulted ON.. perhaps this link may help fix it. Otherwise :( http://www.wikihow.com/Fix-a-Stuck-Pixel-on-an-LCD-Monitor

Apr 21, 2007 | NEC LCD

2 Answers

Audiovox AVT 1598


The vertical output IC or the vertical circuit is whats at fault. its all solid state and im sorry to tell ya that its not a user replaceable part. This set is probably not worth the repair it would take to get this set working again but please if you like ask a ;ocal repair shop what they thought about this problem.. Good Luck and please dont forget to rate this thread

Nov 11, 2006 | Audiovox AVT1498 TV

1 Answer

No picture


You have an intermittant vertical sweep circuit! It could be the vertical out put IC solder connections on the printed circuit board, or maybe the IC itself has poor connections between the IC and the contact legs that mount the IC, or another componet in the vertical sweep circuit. If you know how to solder and unsolder, work on printed circuit boards, then you shoul have no problem replacing the vertical sweep circuit. Good Luck

Oct 09, 2006 | Panasonic CT-25G6 25" TV

1 Answer

Red Line across Screen


sounds like you have a vertical sweep problem. Where the fault lies cpuld be the vertical output IC the verticle b+ feed, could be the capacitors in the vertical circuit?? Your gonna need to troubleshoot thr vrtical circuit if your not a tech thin my advise is to take the set to a pro for sn est. Good Luck

May 22, 2006 | Hitachi 36UX01S 36" TV

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