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POLAROID TTM2401 NO HORIZONTAL DEFLECTION, NO SOUND.HAS LINE DOWN CENTER OF SCREEN.ALSO NEED SERVICE MANUAL. RONALD.

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Check components around the flyback transformer. Especially small value resistors and diodes. Also check the solder joints on the flyback transformer. Please be safe and unplug set when checking parts, also discharge caps or wait a while after unplugging.

Geno

Posted on Jan 24, 2008

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Posted on Jan 02, 2017

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My crt acer ac512 monitar only centre line view,c"not full view why?


there are several reasons why picture of crt monitors did not display good picture. if your monitor had horizontal line at the center of the screen?...the faulty is in the vertical deflection, check the vertical oscillator also the fusible resistors & capacitors around that section. if there had vertical line at the center of the screen?..check the horizontal deflection, horizontal output transistor also check the YOKE.

Jul 31, 2014 | Acer Computers & Internet

1 Answer

Just got this tv from friend. has no remote. screen is black. sound is good. when you push menu button, white line goes across horizontally the screen.


The horizontal line indicates the vertical deflection circuit is not working. Either the set is stuck in service mode for adjusting color (turns off vertical), or the deflection circuit has failed.

Some RCA TV sets have a "Service" switch in the back, down near the bottom of the set. Most of the newer sets use a combination of remote control and front panel buttons to get into service mode, and that can be turned off by unplugging the set and plugging it back in. Try looking for the mechanically operated service switch in the back first.

Jan 05, 2011 | RCA F25442 25" TV

1 Answer

Blank screen but it has sound, when i turn on there is a horizontal line in the center of the screen, before it goes blank but still have sound, i already check all the resistor on both power supply and...


Your fly back, horizontal is in good condition but the possible fault is in the deflection coils or the deflection correction , pin correction section or the hirizontal width coils.
Please check them one by one as they are found along the sides of the flyback sections. check the continuity of the horizontal coils, it can also be a leak/burnt coils that can cause this problem.

Nov 02, 2010 | Sony KV-20M20 20" TV

1 Answer

One horizontal line center on the screen


The vertical deflection circuit has failed, or has been shut down by a service code entered from the remote control*. Usually you can get out of service mode by turning the set off and on again.

*Normally, you have to enter a special combination of front panel and remote control codes to get into service mode, then enter another code on the remote control to get the horizontal line. The horizontal line is used for adjusting the screen controls for each color so you get proper color in the dark areas of the picture.

Oct 27, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

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There is a line down the center of the screen


whether the line-shaped vertical or horizontal? if it appears a horizontal line on your side, it signifies the vertical rays do not exit the screen or your TV vertical part is not working. damage can be caused by IC Vertical, or in the vertical deflection coil yoke.dan if a line that appears is from top to bottom that indicates the horizontal section is not working, usually there is a problem of the deflection yoke is not connected or defective.

Jul 11, 2010 | Televison & Video

1 Answer

No image in my screen


When you ask for help, give make and model number. In this case, if display is a CRT type (cathode ray tube, not LCD), then a horizontal single line in the center of the screen indicates a lack of vertical deflection. If it is a vertical line in the center of the screen, it is a lack of horizontal deflection. Both problems can be caused by any number of components, all internal, and requires a technican to repair. Lowrance has a fixed fee system for their factory repairs. See their online info for support: http://www.lowrance.com/en/Support/Service-Information/Service-Rates/

Sep 30, 2009 | Lowrance Boating

1 Answer

Screen went black Panasonic TV/ PT-47WX53


Hello twisttolife,

What you have lost is horizontal deflection, this is caused by loss of the horizontal drive signal to the yoke transformers on the CRTs, for all three of these to fail at the same time is not likely so what I think is that the drive amplifier may have malfunctioned. To check this you will need:

1) schematic diagram or service manual (to determine the proper voltages and signals on the deflection board)
2) Multimeter (to measure the DC voltages on the components of the deflection board
3) Oscilloscope (to view the waveforms on the deflection board)

With these three pieces of test equipment you should be able to troubleshoot this problem.

Now if you do not have this equipment and what to take a chance at a blind guess, and just replace a board, I would suggest replacing the deflection board, this board usually contains the flyback transformer, the Convergence modules (which can cause this problem also), and the connections to the yoke transformers.

I hope this helps,

Shuttle83

http://www.electron-age-technologies-llc.com

Feb 22, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Toshiba TV CX2789K Horizontal Line


Failure in the vertical deflection amplifier section. This is usualy from failed components, and sometimes cold solder connections. Most of the time, I found bad capacitors, and sometimes the output IC or transistors (depending on the model type) that have failed.

Take the set to a service center for an estimate. You may find it more feasible to buy a new set depending on the parts that failed and the time involved to do the work.

Jerry G.

Apr 14, 2008 | Televison & Video

1 Answer

No Picture only sound


You have a problem inthe horizontal deflection circuit. Quite possibly a solder connection around the yok plug connection or the horizontal output transistor or Driver transformer. If the solder looks good. You will need a service manual so you can check your various power supplies. You can get a manual at the following link for 10.99 and they also offer free support. They willals email it to you if you return to the site and request that they email it instead of mail. Hope this helps. Here is the link.
http://servicemanuals.vstore.ca/

Jan 21, 2008 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

GE 35GT168


If you indeed have a line down the center of the screen that means the horizontal output transistor is working as it produces high voltage as well. The rectifiers are working otherwise you would have no power or sound. What you need to look at is either the horizontal windings of the deflection yoke are open or you have a open return from the yoke to the horitontal output stage.

May 06, 2007 | GE 35GT740 35" TV

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