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I have a 25" Sanyo TV and the sound is fine,the tv will come on,but however it has a thin line across the screen and when you search for a channel you can see through the line that it is showing something.Please help!

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You have vr proble resoder the vir ic

Posted on Dec 03, 2008

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Samsung TSL2793HF - Slight Right Side Pincushion and Horz Line Bottom to Top Until the TV Warms up


Yes, this is rare but I have seen it before--not fixable if it is what I think it is----It is what is called a Dome effect---the shadow mask in the picture tube is actually contracting and or expanding depending on temperature---

Directly behind the phosphor coating (the stripes that you see on the screen) is a metal screen--the holes or perforations in it line up with the stripes on the phosphor screen.

Some masks either have a material or a defect causing the dome effect----Not likely to be anything else---a Pin amp problem will not usually act the way you describe but a shadow mask inside the picture tube will act exactly that way.

Dec 02, 2012 | Televison & Video

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Black tv screen with line across


Vertical output IC has failed. It should be replaced. You haven't given the brand name and model number here. I assume that it is a Toshiba TV. If so, Visit this site for more details. Type in the site name "Electro-help" either Google or Yahoo search box [not in the address bar of your browser], and click search. It is an electronic equipments service help site. All details you want are there. Note the position of hyphen in between words in site name, when you type it in. The site will appear as it is in web; subtitled as service help to electronic home entertainement equipments.

Pull up older posts. You can gather all details. Sometimes, clicking on the ads by the side and bottom of each post might give you more details.

Pull up older posts.

May 28, 2012 | Toshiba MW27H63 27" TV/VCR/DVD

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Thin white horizontal line across otherwise black screen


Hello,

CAUTION: To prevent damage to the CRT phosphors, immediately turn down the brightness so the line is just barely visible. If the user controls do not have enough range, you will have to locate and adjust the master brightness or screen/G2 pots.

A single horizontal line means that you have lost vertical deflection. High voltage is most likely fine since there is something on the screen.

This could be due to:

Dirty service switch contacts. There is often a small switch located inside on the main board or perhaps accessible from the back. This is used during setup to set the color background levels. (On some sets, this is located on the CRT neck board and may be a jumper plug or other means of selecting service mode - not an actual switch.)

When moved to the 'service' position, it kills vertical deflection and video to the CRT. If the switch somehow changed position or got dirty or corroded contacts, you will have this symptom. Flip the switch back and forth a couple of times. If there is some change, then replace, clean, resolder, or even bypass it as appropriate.

Bad connection to deflection yoke or other parts in vertical output circuit. Bad connections are common in TVs and monitors. Check around the pins of large components like transformers, power transistors and resistors, or connectors for hairline cracks in the solder. Reseat internal connectors. Check particularly around the connector to the deflection yoke on the CRT.

Bad vertical deflection IC or transistor. You will probably need the service manual for this and the following. However, if the vertical deflection is done with an IC, the ECG Semiconductor Master Substitution guide may have its pinout which may be enough to test it with a scope.

Other bad parts in vertical deflection circuit though there are not that many parts that would kill the deflection entirely.

Loss of power to vertical deflection circuits. Check for blown fusable resistors/fuses and bad connections.

Loss of vertical oscillator or vertical drive signals.

The most likely possibilities are in the deflection output stage or bad connections to the yoke.
Hope it works well...

May 28, 2010 | Akai CFTD2083 20 in. TV/VCR/DVD Combo

1 Answer

Want to use the tv to play the Wii, but when I turn the tv on it only searches for channels, but can't find any. It then says to check cable connection and search for channels again. No channels found. It...


Ok, the Wii connect to the tv thru the Audio/Visual connections, generally at the back, or side of the unit, usually they are Yellow, Red, and White, or Blue, Green & Red. Please ensure you are connected Colour-to-colour, and then on the TV or remote, select one of the Auxillary, A/V inputs.Then you should see the Wii picture on ya TV. That is why you cannot "find" anything on scanning.

Jan 03, 2010 | Quasar VV-2002 20 in. TV/VCR Combo

1 Answer

I have thin white lines that run across the top of my picture. They are only visible when picture is full screen. The wide screen picture (with the black areas at the top and bottom) do not show this. The...


sounds like bad capacitor in vertical circuit. It's not a hard fix if you know where to look. Repair shop should not have hard time repairing it.

Aug 10, 2009 | Televison & Video

1 Answer

I only Get Channel 3 and a blank screen that says LINE


Under the menu setup, set it to cable (not "air")and do the search again. If there is a button on your remote that says input, push that first before trying this. Might save you some unneeded steps. Good luck.

May 22, 2009 | Panasonic PV-C2541 25 in. TV/VCR Combo

1 Answer

A thin line appears on the screen,when turned on


we bought a new set, the tube on the old one was burnt out

May 14, 2009 | Philips Magnavox 24MC4306 24" TV/VCR/DVD

2 Answers

Quasar model VV2008 tv/vcr


in side the mother board(kit)  there should be vertical IC gone.   check the vertical section  for  the IC number  and  replace it  ,     this  will solve ur problem 


thanks 

Oct 26, 2008 | Quasar VV2009 Combo

2 Answers

Tv. repair


i have bpl fcr deluxe (mod. no. 18cb1) colour tv. i have prob .for search ,auto ,fine option when i go to do this it display TU-LOCK PLZ HELP ME TO FID THE FAULT.

Oct 23, 2007 | Toshiba MW27FN1 27 in. TV/VCR/DVD Combo

1 Answer

Several dozen thin horizontal white lines across the top of screen, all channels


These beasts are monsters to get into and service without the proper extenstion cables and a service manual. there are no user replaceable parts inside this set. if you know solid state serviceing, you can try and fix it. There is a bad capacitor or capacitors in the vertical sweep circuit and or the vertical output IC is bad also. If you can solder and unsolder go for it. But if you do not or know how the circuit Works Please find a trained tech to assist you with this repair. Good Luck. PS please do not forget to rate this.

Oct 14, 2006 | RCA 27F500TDV 27 in. TV/VCR/DVD Combo

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