Question about Sharp Televison & Video

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I have a sharp tv. the problem is when i turn on the unit it shows a single horizontal line then immediately relays clicks then turns to stand by mode. i already change the vertical ic.

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Vertical scan output failure. That is the reason for this horizontal line, right across the center of the screen. Check and replace damaged component/s at it vertical scan output section circuit. Check the solder terminals of the vertical scan output IC; for any loose solder points. Contact any service technician, if you're not handy in electronics.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to TV screen are given with illustrations. You can get an idea about the fault to an extent.

Posted on Dec 02, 2014

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Posted on Jan 02, 2017

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SOURCE: JVC AV-27790 - single horizontal line

Since Intermitant always inspect the vert ckt for bad solder connections. If not replace the output IC they're cheap and most likely the problem If you still have lines on the top or bottom I would replace all of the electrolytic capacitors in the vert ckt also. Without much test equipment rebuilding the whole little ckt is the best way to go.

Posted on Apr 24, 2007

  • 556 Answers

SOURCE: missing vertical deflection on philips TV

TDA 8362B IC which have vertical freq.output is at pin no.43. (vert.osc) caution for fixing this problem minimise brightness to avoid crt burn. proceed as follows 1 if you are getting sawtooth at output of ic tda 8362 pin 43 then check 1 supply at vertical output ic from eht. 2 yoke connector loose . 3 check vertical output ic parts. 4 finally vertical ic. please check for normal output from power supply even though fault gets rectified just for protection. good luck.

Posted on Sep 23, 2007

  • 556 Answers

SOURCE: Sharp 27G-S60 no vertical picture

your problem is due to vertical section failure.

 

 as you say it was intermittent for a while, but now is permanent

please check the followings as given

  • remember you should keep brightness as low as possible to avoid crt burn.
  • there might be loose contact in print or connector loose for deflection coil.
  • check supply to vertical output section
  • check components in vertical output section like electrolytic capacitors & low value resistirs.
  • check verical outout ic .
  • hope this will help
  • good luck.

 

 

 

Posted on Oct 15, 2007

  • 9 Answers

SOURCE: mitsubishi cs27403c tv problem

kindly...see first the flyback and adjust the screen if the horizontal line still there adjust the fucos....

Posted on Jan 08, 2008

  • 1 Answer

SOURCE: orion tv problem

tv flipping colors and verticle alignment not straight

Posted on Feb 10, 2009

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I have a tv set problem is when i press the secondary power the pilot lit turns green but turns back to red (in stand by mode) imediately. theres a clicking sound from the relays.


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

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I have a sony wega trinitron, when the tv is turned on, (no visual, or sound) the red stand by light blinks 7 times, and you hear the tv click off? Please help


Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

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1 Answer

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1 Answer

I have a sharp tv 21" if i turn it on or change channel,pink display will appear with red horizontal lines about half inch intervals dn a few seconds it will turn normal but the red horizontal lines remain...


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I have a KV27FS210 sony wega trinitron tv. It turns on and has a single horizontal line across the center of the screen then buzzes shows a continuous zigzag line from the top to bottom of the screen with...


The single horizontal line is a problem with the vertical circuit. Look for a small flat id attached to a heatsink that should be marked LA7837 or something similar. Try resoldering the pins of this IC first. If that does not resolve it, replace the IC.

Keep us posted.

Dan

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1 Answer

Mitsubishi CS-31303 will not power on.


I have Mitsubishi TV CS-31303. It has transient issues. At turn on, it shows horizontal fringes for some time along with picture, then single horizontal line only and then after some time finges at the 1/3rd bottom and then clear full picture. After some more time the clear picture turns into horizontal fringes at the bottom 3rd of the picture and picture rolls and then again the picture is very clear. Some one said that there is an issue in the signal PCB. Where is it and what componets are at fault. I do have service manual which shows circuit diagrams.

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1 Answer

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SEVEN Blinks---High voltage shutdown. The high voltage has exceeded 33k
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1 Answer

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I would suggest to locate a part that looks like the one on this link and re solder all the pins, also check for any high power resistor nearby the IC295890 and put some fresh solder.
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