Question about Zenith C27A24T 27" TV

1 Answer

White lines across screen and color faded.

I went to turn on my tv after hooking up a audio/video adapter and the screen had crooked horizontal lines across it and the color was faded to gray. Nothing had happened to the tv since my vcr died which was like 3 weeks ago, so I have no idea what could be wrong with it.

Posted by on

Ad

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.

    New Friend:

    An expert that has 1 follower.

  • Expert
  • 47 Answers

Those lines are called vertical retrace lines. They appear when the G2 (screen) voltage is set too high, or when the video amplifier fails or lacks the high voltage supply (200v).

Have you got any electronics experience? You will need a multimeter and soldering skills.

If you do or know someone who does, take the set apart, look at the video amplifier IC (it is on the board at the back of the tube), get its model and download the datasheet. Find the pin that is labeled "high voltage supply" and with the set turned on measure it against the one that says "ground". You should have somewhere between 180-210v there. If that voltage reads zero or a very low value, the amplifier circuit is shorted or the power supply is not working properly. Unsolder the video amplifier and measure again, if the voltage comes up then buy a new amplifier IC, if it doesn't it's time to check the power supply. I believe you can find a service manual easily, follow the directions there.

Safety precautions: Do not under any circumstances touch the leads of any capacitors, and stay away from the big fat wire going to the top of the tube. Do not do anything inside the TV while it is plugged in (except measurements), and always use well-insulated tools. The high voltage section of the TV does not pose any health danger, however the shock it can give you will make you jump back, possibly into something sharp.

Posted on Jun 26, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Red lines on Samsung UN46B7100. Is this the TCON board or the panel?


Have you checked all cables first? Color fluctuations and problems of this nature can be caused by a bad VGA/HDMI/Component cable. Try plugging your source device into other inputs and see if you get the same result. If that happens you more than likely have a bad video card.

Aug 31, 2012 | Samsung UN46B7100 45.9 in. LCD TV

1 Answer

Red/Orange horizontal lines


it could be that the tv convergence circuit is going bad. One shure way of finding out is to go to the tv feature menu(picture,audio etc.) and select the customer convergence setting, you should get a cross hair pattern(cross in middle of screen). that cross should be white and by aligning the red or blue colors they should move left, right, up or down

Jul 27, 2009 | Akai PT5492S 54" Rear Projection...

1 Answer

Line across screen


scane for virus and reinstall the operating system

May 30, 2009 | Computers & Internet

1 Answer

Xbox 360 is showing purple lines on tv screen.


Hi...
Pull out the video cable from both ends.
Re-attach and try again
Let me know

Jan 18, 2009 | Microsoft Xbox 360 Console

1 Answer

My Siny Trinitron G21M1 is producing horizontal lines across the screen


Hi,
I hope your TV model is Sony KV-G21M1 and you see color bars as horizontal lines across the screen.
Let me now are you tech guy or know how to repair TV to guide you further.

Oct 26, 2008 | Sony Televison & Video

1 Answer

Flashing Horizontal, Circuluar, Colored Lines


sounds like bad capacitors on the FMT board need replacing that is a common fault with the first generation DLPs There are 3 bad capacitors.

May 31, 2008 | Mitsubishi WD-52525 52" Rear Projection...

2 Answers

White horizontal, zig-zagging lines


Sounds like the flyback transformer is bad. couple of 100 dollars if it is that

Dec 03, 2007 | Televison & Video

1 Answer

Strong red tint with horizontal lines across screen


if you have warrenty, return it. if not, then buya new one...the video fuses are dying...hard to fix it.

Oct 06, 2007 | Akai PT4799HD Rear Projection Television

Not finding what you are looking for?
Zenith C27A24T 27" TV Logo

502 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74459 Answers

matt martin
matt martin

Level 3 Expert

1213 Answers

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

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

Answer questions

Manuals & User Guides

Loading...