Sylvania 6427FF TV displays wavy verticle lines at top of the screen.

I am having a problem with my Tv. It seems to display wavy verticle lines at the top of the screen. I have no idea what is causing this.When i access the service mode and If i make a change to the horizontal freq. The problem is reduced significantly but it seems to come and go every few seconds. I checked the board for loose connections and I found only 1 and after repairing this it still seems to show wavy lines at the top of the screen . I need some help! thanks.

1 Answer

Bill Heronemus

Level 2:

An expert who has achieved level 2 by getting 100 points

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Sergeant:

An expert that has over 500 points.
Expert
308 Answers

I would suspect defective filter capacitors in the sweep circuits as well as the power supply source voltages.

Posted on Apr 13, 2008

Add Your Answer

Upload

Upload an image from your computer

Uploading: 0%

my-video-file.mp4

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

Loading...

Include an image. It's worth a thousand words.

prev next

Related Questions:

0helpful

1answer

Wavy horizontal lines across the screen

It sounds that the main power supply section to your TV has the fault. The horizontal thik lines that appears crawling down across the screen should be of video 'HUM'. Have you replaced the main filter capacitor at the power supply section? If not, replace it along with the main rectifier. The AC power is rectifed by a bridge and applied ot this main filter capcitor. It will have a capacitance value between 120 to 350MFD 450VDC. Check this section. Measure the rectifed DC voltage acorss this main filter capacitor. It should be around 350VDC, if your home power supply line is 220VAC. If it is 110AC, this DC voltage will be around 165VDC; and it should be. If rectified DC voltage found lower than the input AC voltage, replace the rectifier bridge. In some sets, this bridge section have four diodes. Some other circuits, a bridge rectifier stalk may be used.

Read full answer

May 20, 2012 • JVC AV-27050 TV

0helpful

1answer

Sylvania 6427FF

hook up comp.or change to input your using.

Read full answer

Jul 24, 2008 • Sylvania 6427FF TV

0helpful

2answers

No picture just a line across t.v.(sylvania 6427ff)

The vertical IC are blown you gotta change it.Good luck.

Read full answer

May 23, 2008 • Sylvania 6427FF TV

0helpful

1answer

TV won't turn on

Until I actually get my hands inside one of these sets, I can only guess that you have a shorted component keeping the power supply from operating. If it weren't for all the Tv's that the *MART stores are selling the would be a lot more TV repair shops go out of business. Generally you don't want anything electronic with that brand name associated with it. Sorry to be so glum.

Read full answer

Apr 10, 2008 • Sylvania 6427FF TV

0helpful

1answer

TV will not turn on

I suspect you may have a short in your horizontal deflection circuit that is keeping your power supply from fully energizing. I do not have any information on this model and suspect that it is actually made by symphonic/Funai corp which puts it in the disposable Tv catageory in my opinion.

Read full answer

Apr 10, 2008 • Sylvania 6427FF TV

0helpful

1answer

2009 scare

The change to digital in 2009 affects TVs on an antenna only.
If you use cable or satellite than you need to do nothing, regardless of how old your tv is.

Read full answer

Mar 24, 2008 • Sylvania 6427FF TV

1helpful

1answer

Remote Code for Sylvania 6427ff TV

If its a 4 number code, try 0171

Read full answer

Mar 06, 2008 • Sylvania 6427FF TV

0helpful

1answer

Sylvania 27 inch stereo flat screen tv

This problem sounds like a short inside the picture tube itself unless a driver transistor failed that drives the red gun in the CRT. You may have to take it to an authorized repair facility if the picture tube is still in warranty.

Read full answer

Nov 10, 2007 • Sylvania 6427FF TV

0helpful

2answers

Verticle lines on screen

This is a very easy fix. Your cable box is not grounded correctly. To fix this you need a AC Plug adapter. This will change your TV ac plug from a 3 wire to a 2 wire. This may sound funny, but trust me on this. I have fix a lot of TV in NY doing just this.

Read full answer

Sep 10, 2007 • Samsung HP-R4252 42 in. Plasma HDTV

0helpful

1answer

Sylvania Model 6427FF; Serial V31567989

You probably have a couple of resistors out as well as a shorted D396 Zener Diode that is supposed to keep the voltage regulated at 8.2 Volts DC. With it being a Sylvania brand, it is probably not worth repairing.

Read full answer

Jan 24, 2007 • Sylvania 6427FF TV

Not finding what you are looking for?

View Most Popular

6427FF TV

Televison & Video

Wavy horizontal lines across the screen

JVC AV-27050 TV

Open Questions:

0answers

need to program direct tv remote to magnavox model number 6427ff

Read full answer

Be the first to answer Jan 26, 2014 • Sylvania 6427FF TV

0answers

can I reset tv to original factory setting without remote

Read full answer

Be the first to answer Sep 17, 2013 • Sylvania 6427FF TV

0answers

Need to hook wii up to Sylania 6427 GFF without using a remote The remote to the tv does not have an input so I would have to do it manually on th tv to hook up my wii. It would not let me select the highlighted picture .

Read full answer

Be the first to answer Apr 11, 2012 • Sylvania 6427FF TV

0answers

i can't figure out how to turn subtitles off on my 26 inch sylvania tv

Read full answer

Be the first to answer Sep 14, 2011 • Sylvania 6427FF TV

172 views

Ask a Question

Usually answered in minutes!

Check Out the Latest HD Televisions Report

View all Fixya Reports

Are you a Sylvania Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

PDF Manual

This is the official servicing manual...

6427FF TV

Have a manual for Sylvania 6427FF TV? Or just drag it here!

Related Topics:

Sylvania 6427FF TV displays wavy verticle lines at top of the screen.