Question about JVC AV-27820 27" TV

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JVC Television Model AV 27820

A horizontal line. Vertical problem. Started with retrace lines at the botton of the sreen, then it broke down to a horizontal line, you can turn it on for a few minutes and it brake down again.

Thanks, George

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Re: JVC Television Model AV 27820

One or more of the electrolytic condensers near the vertical ic are bad

Posted on Nov 20, 2007

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JVC AV-27820 turn on the a white line accross middle

Total failure of vertical sweep occured whic your JVC TV. There are mainly two resons for this fault.Loose soldering terminals of the vertical output IC is the first one. The second one is of failure of the vertical output IC itself. You have to locate this vertical IC. It can be located at the main board. Vertical IC will be screwed on to a metal heatsink to radiate heat from it while it works. You can identify it very easly, if you have knoledge in electronic circuts abd printed circuit boards.
Resolder all the solder terminals of this IC first, by applying a little more solder; without making any solder bridge short in between the close adjecent solder terminals, and see whether it helps you. If not replace it with same type and number. OK.

Oct 08, 2011 | JVC AV-20220 TV

1 Answer

I have a JVC AV-32F703 tv just replaced the vertical IC tv comes on but immedeatly goes into shut down mode by what could the problem be? Retrace lines was on top of picture before it started going into...

Chances are you should have checked some components related to that IC,namely an electrolytic capacitor.They tend to leak or short.That IC burned for a reason.

Sep 25, 2010 | JVC AV-32F703 32" TV

1 Answer

Video just reduced to a tiny horizontal line across the screen. sound is fine, what could be the problem? jvc tv model av-32720

You have a bad vertical IC at its worse or one that may need resoldered. Be sure to check the grounds on this IC and check for rings around the pins. And you can bet in the immediate area you have bad capacitors that created a hot vertical IC. This will cause the Vertical IC to break down!

May 02, 2010 | JVC AV-32720 32" TV

1 Answer

White line across center of screen

cold solder in vertical ic or bad.

Apr 03, 2010 | JVC AV-27820 27" TV

1 Answer


This is what we called RETRACE LINE. This happens when the 200 V at C board is missing. Some times a 4.7 Ohms fusible resistor open, and find out the reason why it opens, could be a damaged RGB drive. The worse if retrace line show up together with a saturated green picture your green gun is damaged, in this case you have to change your CRT. Good Luck

Feb 24, 2010 | JVC AV-36D202 36" TV

1 Answer

Horizontal white lines across top problems of my television.

This is probably bad/leaky capacitors in the vertical circuit, around the vertical IC, or the power supply that feeds the vertical. Sometimes you can see domed/ bulged caps or what looks like liquid on the circuit board around the leaky ones. The legs on some caps can even corrode to the point the leg is missing. Care must be taken when replacing them because the acid from the caps can eat away foil traces on the circuit board. All acid must be cleaned off board to prevent further corrosion of parts

Sep 01, 2009 | JVC AV-32850 TV

3 Answers

TV: bright line across black screen for several hours.

vertical output ic needs to be resoldered. careful leaving that bright line displayed on the screen as this will cause a permanent phosphor burn into the tube. this can not be corrected once burned unless you replace the tube. mch

Mar 08, 2009 | JVC Standard (CRT) Televisions

1 Answer

Jvc av-32wf36--have sound no picture

A bright Horizontal Line indicates failure of teh Vertical deflection Circuits.
Get a competent Technician to have a look.

Nov 30, 2008 | JVC AV-27230 27" TV

1 Answer

Jvc AV-36f802 not power up, automaticly shut down within 2 seconds

Hi, You may also want to check the Vertical IC. In some units I've worked on, failure or cold solder in the vertical IC triggers protection. Good luck and cheers.

Aug 15, 2007 | JVC AV-27820 27" TV

1 Answer

Faint horizontal lines in picture

This is usually caused by a problem in the Horizontal Output section, around the Horizontal Output transformer usually a capacitor or diode going or gone faulty... the line you see are the Horizontal "Retrace" lines that are useually "Hidden" when the circuit is OK..

Jul 30, 2007 | JVC AV-27320 27" TV

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