Question about Compaq CV 7500 17" CRT Monitor

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Red colour problem in compaq 7540

In monitor compaq 7540 , red colour is not visualize . if cpu is disconnected then red , blue , green colour visible . please solve this

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Check to see whether monitor terminal has a broken pin. Otherwise change the VGA card.

Posted on Sep 07, 2009

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Posted on Jan 02, 2017

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My campaq desktop monitor 7540 is flickering horizontal direction


Try a different CRT monitor on your computer.
Try your CRT monitor on a different computer.
See if the problem "moves" to the other computer,
or whether your computer has problems with *ANY* monitor.

Dec 27, 2013 | HP COMPAQ 7540 CRT Monitor

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COMPAQ 7540 CRT Monitor servicemode pls provide me. Thanks.


You could try this link, but it would be far cheaper to upgrade to a new or second user LED/LCD monitor
http://www.eserviceinfo.com/index.php?what=search2&searchstring=schematics+diagrams+hp+7540+crt+monitor

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How to reduce greenish colour on hp 1702


in the main menu of your display buttons on your monitor there is color settings red blue and green wshere you copuld adjust. it this helps please rate with comment

Feb 06, 2013 | HP Compaq 1701 17" LCD Monitor

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Ive just bought a new pc, and my LG screen only shows green and blue colours and no red.


Try a different monitor on your computer.
If RED is visible, your CRT monitor is ready to be responsibly recycled.
If not, then the video-card on your new PC is problematic.
Take the "new" PC back, and exercise your warranty to get it repaired/replaced.

Try your monitor on a different laptop/desktop computer.
If there is no RED, then your monitor is the problem.

Sep 29, 2010 | LG Flatron Ez T710BH 17" CRT Monitor

1 Answer

My moniter screen has turned to blue screen and i am not able to


On your CRT back PCB thers three transistor on for red green and blue its possible that your blue transister is faulty. Try moving your cable see if the colour changes it can also be a faulty 15pin plug
Have a nice day

Dec 24, 2008 | HP Compaq FS7600 17" CRT Monitor

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Problem with the vga cable


Put the connector infront of you and take biger size to top and smaller to down then count the pins like this-1=red,2= green,3 =blue(count the pins right hand side to left hand side),4=ground,5= blank,in lower row 6=red ground,7= green ground,8=blue ground,9,10,11=blank,12,15= in command section,13=horizantal synk,14= vertical synk.Hope this solution works otherwise i am always for help you.

Mar 31, 2008 | SAMTRON 55V 15" CRT Monitor

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Compaq 7540 colour looses red color


check the pin # 1 of video input cable { broken or Bent }
if it is ok then there must be a problem with the cable or RGB Processing Circuit { Normally Dry Soldering of a faulty IC in the circuit of CRT BASE} .

Mar 09, 2008 | Compaq CV 7500 17" CRT Monitor

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