Question about JVC AV-27720 27" TV

1 Answer

Sound is fine, picture not

I used to be able to jiggle the cable connection and the picture would tune in, but now it's just a few horizontal lines with a partial picture that flickers in and out in one or two of them; screen is 2/3 blank


is it worth taking to a repair shop?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 88 Answers

You have a vertical deflecttion chip that is going bad. Probably a LA7832. There is also a good chance that you have a leaky capacitor and bad zener diode. The capacitor is east to get , the zener diode part # is MTZJ75. These repairs are usually best left to a professional

Posted on Mar 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Need help with horizontal hold on 1971 Sylvania TV


it is better to use audio video input of your tv .syncronisation problem in the Rf stage cannot be solved easily.

May 24, 2014 | Standard (CRT) Televisions

1 Answer

Turned on, and picture went out(just a line)with sound. never had problem with picture,but remote stop working about a year ago, cable tech said its tv not the remote


If it's a horizontal line across the face of the picture tube, your TV has a problem with its vertical output. Most likely, it's bad solder connections to the vertical output IC. Because this part gets very hot during normal operation, the connections to the circuit board can crack and the part quits working. All you see then is that narrow line across the tube. A few minutes with a soldering iron to repair the connections is usually all that's needed to fix the TV. It's also possible the part has truly failed, but the bad connections a much more common. A service shop could do the repair if you don't know anyone with the soldering skills.

Mar 29, 2009 | Panasonic CT-25G6 25" TV

1 Answer

Only horizontal line on my esa 32" analog tv/cable ready


The vertical output transistor, or a component in that circuit has gone out. Often an electrolytic capicator in this circuit will fail causing this problem. Sometimes you will have catastrophic failures which will take out the transistor, cap, and resistors in that circuit. But none are expensive parts really. But it takes an experienced hand to replace/test them.

Mar 15, 2009 | ESA ET427E 27" TV

1 Answer

Polaroid ttm-2401


To me, sounds like a picture tube issue. horizontal / vertical controls don't fix it. then its dead.

Jun 22, 2008 | Polaroid TTM-2401 TV

1 Answer

Thin horizontal line


Solder bad connects in vertical circuit,especially vertical output
IC pins.................T.

Dec 26, 2007 | Toshiba 35A44 35" TV

1 Answer

Sound but no picture


Basic repair for skilled TV repairman = solder connections on
vertical output IC.........Can be done in home.....T.

Nov 28, 2007 | Sony KV-35S42 35" TV

3 Answers

No picture/sound with cable


well tuners are being made smaller (and there is more cold solder in some points due to heat) so i would look up a new tuner for that tv...and if you know how to solder ,do it yourself it will be cheaper

Oct 20, 2007 | Toshiba CF32G50 32" TV

1 Answer

No picture


You have short in the cables and they need to be replaced.

Jun 26, 2007 | Sony FD Trinitron WEGA KV-27FS100 27" TV

1 Answer

Beautifull picture except for a jiggling black line in pricure


your tv is having horizontal problem take it to a tech in order that the hrizontak deflection circuit be checked it also might have abad yoke

Dec 28, 2006 | Samsung TXF2899 28" TV

1 Answer

Black comes across right side of screen


Sounds like you've got whats called a cold solder connection somewhere in the horizontal width control circuit or a connection in the sweep section. Should'nt be two expensive but unless you have had some soldering and troubleshooting experience I would leave this on to the pros. Good Luck

Jun 02, 2006 | JVC AV-36D502 36" TV

Not finding what you are looking for?
Standard (CRT) Televisions Logo

42 people viewed this question

Ask a Question

Usually answered in minutes!

Top JVC Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

68323 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

Are you a JVC Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...