Question about Optoma H30 Multimedia Projector

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My optomaEzPro 730 works perfectly for 5 minutes, then the motor speeds up, and the screen shows thin gray and white vertical bars...

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Clean out all the dust from it, it sounds like it is overheating.

Posted on Jun 15, 2009

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Posted on Jan 02, 2017

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How do I get rid of vertical black bars on a plasma television


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Jan 05, 2016 | Samsung Televison & Video

1 Answer

I have a Bravia KDL 40BX421 that suddenly has green vertical lines on the bottom 1/4 of the screen. These lines are in a background bar that is mostly a reddish shade.


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Hi guys, Ive had this TV for about a year now - all of a sudden thin vertical lines havecovered my screen (show in link below) No matter what ...Missing: 40bx421

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Dec 16, 2015 | Televison & Video

1 Answer

Wide gray bar with thin green, yellow, pink and blue stripes appears when tv is on.


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Oct 17, 2015 | Televison & Video

1 Answer

Any advice on what board I should replace if the left half of the screen is no good, just showing white and black vertical bars? Right half is fine. Is the panel kaput?


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Sep 29, 2015 | Panasonic TH-37PH9UK 37" Plasma Display -...

1 Answer

Dlp chip after replacing


you will need to pull the chip out & clean out the dust & other foreign particles that were allowed to fall in & lightly brush off the chip (with a very soft brush, again to remove dust & foreign particles.

Apr 28, 2015 | Mitsubishi Tv Dlp Lamp 915p061010 For...

1 Answer

Why is my monitor only showing white?


Your LED Panel looks got damage, no need inverter to repair, just replace your LCD Panel

Aug 30, 2014 | DMCOM Viewsonic Vx2250wm-led 22-inch...

1 Answer

Gray vertical bars on screen but no picture


It sounds like you might have shorted out the display panel driver board / boards.
These boards are located at the bottom of the screen and are prone to liquid damage.
Just before this happened, did you happen to spill something on the screen or clean the screen using a spray bottle cleaner?
The only fix I know of is to replace the whole panel but it is usually just as cheap to buy a new TV.

Nov 28, 2013 | LG 55LE5400 55-Inch 1080p 120 Hz LED HDTV...

1 Answer

I have vertical bars on screen


Hello,

The T CON board of the television is bad, you need to replace this
The T-CON (Timing Control or LCD controller) board (on the LCD panel assembly). It transfer the universal image signal of TTL and LVDS signal to specific TFT (Thin Film Transistor) LCD.
This is the interface board that talks to the Logic board and the LCD panel to produce pictures on the screen. White/gray glowing screen when it fails or not getting the voltage from the logic board (the 5 or 12vdc is supplied by switched transistor on the logic board). Notes: T-CON board is mounted under the metal cover shield.
Common failures:
Scrambled pictures, Lines, multiple pictures, color smears/blotches, rolling pictures after warm up.
Blown surface mounted fuse.
No pictures, very dark screen almost like there is no backlights.

Hope this helps........

Jul 30, 2010 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

Ford focus 1999


Pin --- Color --- Stripe --- Function

Harness 1

1 --- White --- Black --- Left front +
2 --- Gray --- Black --- Left front -
3 --- White --- Purple --- Left rear +
4 --- Gray --- White --- Left rear -
5 --- White --- Red --- Right front +
6 --- Gray --- Red --- Right front -
7 --- White --- (none) --- Right rear +
8 --- Gray --- (none) --- Right rear -

Harness 2

1 --- (not used)
2 --- Black --- Green --- Radio Ground
3 --- (not used)
4 --- Orange (thin) --- Black --- Radio Illumination
5 --- Green --- Yellow --- Radio switch
6 --- Black --- Yellow --- Radio Ground
7 --- Orange (thick) --- Black --- Radio 12V

Harness 3

1 --- White --- Green --- Speed sensor
2 --- (not used)
3 --- (not used)
4 --- (not used)
5 --- (not used)
6 --- (not used)

Dec 22, 2008 | 2003 Ford Focus

3 Answers

Line accross top of the screen with flashing black and white boxes


Thin white dashes on top of screen is PERFECTLY NORMAL. It is nothing wrong with the TV, it is the broadcast. What you are seeing is the very bottom of the timecode running. It doesn't happen all of the time or all channels. It usually happens with old 4:3 commercials predating "Digital TV." This is mentioned in your Users Manual. You should be able to adjust the horizontal/vertical position in the menu settings.

Jan 02, 2008 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

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