Question about BenQ SP831 Projector

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The screen image has a series of vertical lines that appear then disappear at irregular times

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Normally this is loose connection of main board with the DMD assembly.
Need to remove main board and Refit.
Samir

Posted on Oct 15, 2010

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Posted on Jan 02, 2017

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Monitor is distorted-some icon images present but also vertical and horizontal lines and an irregular white area on one side of screen.I cannot find reset monitor button on Compaq CQ60-420US.


old post, but here are the official books
sounds like a bad LCD panel, or gross power loss (low)
or overheating GPU, (graphics chip)
first makes sure fans work correctly remove lent
test with the battery removed, and if you twist screen or base gently if LINES CHANGE shape or form,bingo, bad screen.
the resets for all HP laptops is answered at HP.com
1 million times, (or infinite)

https://support.hp.com/us-en/product/compaq-presario-cq60-400-notebook-pc-series/3944778/model/3979086/troubleshooting




HP reset again..... (i typed "reset" in the Hp home page and got....


https://support.hp.com/us-en/product/compaq-presario-cq60-400-notebook-pc-series/3944778/model/3979086/document/c01684768

Dec 09, 2016 | Compaq Computers & Internet

1 Answer

No image, Just red and blue vertical line on display.


If your LCD TV or monitor has stopped working, or is displaying one of the following
symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can
examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life
of your monitor or TV by several years.
Take it to a repair shop.

Apr 05, 2014 | Sceptre X405BV-FHD3 40 in. LCD HDTV

1 Answer

"Lines" or irregularities through the monitor image display


Check power supply section for bad caps with bulging top first, may be a sign of failing power supply: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX2235W/

Jan 27, 2010 | ViewSonic VX2235WM Monitor

1 Answer

Vertical colored lines on white background on SyncMaster 740N


Hey dont open the LCD in a hurry......the problem may be due 2 usage of LCD 4 long time better dont on the pc for a day........or in night time keep it under the fan.......this may give a better result........

Nov 09, 2009 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Vertical lines appear on screen...


You have a defective light engine. Contact RCA support. Sometimes they will warranty these even after the 1yr warranty has expired.

May 16, 2009 | RCA HD50LPW42 50" Rear Projection HDTV

1 Answer

The image disappears on my tv screen. A horizontal line appears.


You need to check the horizontal IC for deffects, possibly and most likely there are dry joints on the legs of the Horizontal IC. Have all the legs on the IC soldered nicely, this shud sort out your problems as you say you hit the TV then works. Try this before replacing the IC

Apr 16, 2009 | Televison & Video

3 Answers

Thin vertical line appears on projector


I have found that vertical lines that suddenly appear from projectors are due to poorly connected cables. Sut off your projector and wait for the fan to go off. Then unplug the connectors from the computer to the projector and secure them again, making sure to go all the way. Hope this helps.

Nov 25, 2008 | Office Equipment & Supplies

3 Answers

White vertical line in the center of projected image


I have a Dell 2400MP projector that had the same problem of vertical white lines appearing over the screen.

This may seem like a simple solution, and I don't know if this will work for you, but the way I solved the problem was simply to press the bottom side of the projector, until the white lines disappear . Until now, the problem has yet to resurface.

Here's some simple steps:
1. Turn on projector
2. Connect projector to computer
3. Focus projector
4. If white vertical line appears, firmly press underside body of projector
5. See if vertical white line disappears
6. If not, try slowly pressing other parts of the body of the projector and see if white lines disappear.
7. If solution doesn't work, you may need to send it to the service center.

Hope this solution works for you.

Best Regards,
Ghazali Ridzwan
http://www.ghazaliridzwan.com

Nov 28, 2007 | ASK Proxima Proxima DP2000S Data Video...

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