Question about Optoma DLP Projector HD23

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Lines on the screen

There are horizontal lines showing up on the screen that are not on my computer

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The interface between the mother board and DMD drive board
to clean the the interface with some alcohol
securely plugged
The interface between the mother board and DMD drive board
to clean the the interface with some alcohol
securely plugged

Posted on Mar 04, 2014

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Posted on Jan 02, 2017

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TV shows either: black screen with: white vertical or, horizontal line


If Your screen shows a: white vertical line on a black screen or, a white horizontal line on a black screen:
Your TV vertical or, horizontal power transistor or, chip is getting too hot.
A vertical line indicates the horizontal circuit is at fault, a horizontal line indicates the vertical circuit is at fault.
To troubleshoot: Turn on your TV untill the line shows then: after about a minute, remove power (unplug) the TV, remove the TV back cover, find the too hot transistor or, chip; using component coolant; spray the too hot component with the component cooler until the screen comes back to normal. To fix: apply white coolant cream to the back of the too hot transistor or, chip. or, if there is room, a small fan can be wired in to cool the part. Radioshack sells the cream and, also a "component cooler spray" that should find and, fix this problem, also; with power removed you can, if you feel it is safe; carefully (with only one hand) feel the part; it will be very hot! (it could burn your finger!) Do not touch anything else! (this will not hurt the tv; when the picture comes back on (the offending part has cooled) you have found the problem part.

on Apr 06, 2010 | Televison & Video

1 Answer

How do I fix my Sharp tv model LC-42D62U? On the tv screen now shows horizontal lines with repeating ghost images.


Hi Paul,
The horizontal lines on the screen are virtually NEVER caused by a bad T-con board. These horizontal lines indicate a defective LCD panel (screen). The Screen has small ICs that become defective overtime and that it isn't fixable unless replacing the entire screen.

Sep 13, 2015 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

Why half screen is ok, other half I.e. bottom part horizontal lines are seen.


Your LCD or Control Board is damaged. You can replace the LCD or the Board or have someone do it for you.

Aug 03, 2015 | Sony KLV-32BX300 SERIES BRAVIA LCD...

1 Answer

My computer screen started to show horizontal lines a long time ago. It's not the computer, it's the screen because I had this screen on my computer and went to buy a new one. About 2 to 4 years later


Hr scello try to renew or install the screen card driver.

I think your pc is missing the driver.
When the driver is not correct or missing, you get a bad picture on your screen.

Visit the pc or graphic cards homepage insearch for the screen driver.

Good luck

Mar 08, 2013 | Computers & Internet

1 Answer

My LG flatron W2286L suddenly is showing horizontal fine lines on the wholl screen.... what to do ?


tried to unplug the monitor for a while then re plugged and power it on. if still has horizontal line, this time it needs a service which you are going to check a loose contact first in connectors then in the lcd controller board.

Dec 28, 2012 | Computers & Internet

1 Answer

When watching movies on my computer, I am getting a weird line through the middle of the screen at times, also, when things are moving on screen faster, more lines seem to show. I guess they don't really...


i think your vertical IC ( if vertical lines are shown) / horizontal IC ( if horizontal lines are shown) of your monitor has damaged. you may contact a mechanic and change the corresponding IC

Sep 16, 2010 | CTL 261UW 26Inch Wide Screen LCD Monitor...

1 Answer

Screen displaying a thin white very bright horizontal line.... plz help


Remove dry solder at Vertical IC if problem not solves replace VERTICAL IC and pf104

Darshan

Jul 05, 2008 | LG Studioworks 552V 15" CRT Monitor

1 Answer

JVC 27" CRT TV AV-27BP3 display shows single horizontal line


I have a similar problem on my CRT computer monitor (AcerView 76c). It is an old screen and I think it is just at the end of its life, much like your TV. Having some background in physics, I would be pretty sure that the problem is with the cathode ray tube's vertical deflection system. The horizontal deflection electrodes are working while the vertical one is not. This results in a display of a single horizontal line (or in my case, a few superimposed) in the centre of the screen. Where both X and Y (horizontal and vertical) deflectors fail then the electron gun firing would result in a single bright spot in the dead-centre of the screen.

So really, we have no choice but to move on and buy a new set as repair is probably just as, if not more, expensive than replacement with a new device. Seeing as your post was in 2007, I hope you managed to solve the problem.

Best wishes,
SZ (Sydney, AUS)

Dec 24, 2007 | Televison & Video

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