Question about HP COMPAQ 7540 CRT Monitor

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HP 7540 crt monitor shrinks to a horizontal line

First it was frequently poping up the menu. Thereafter the display started shrinking to a horizontal line. Which components must I replace to rectify the problem?

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It would be more economical to purchase a new or used LED/LCD display rather than wasting money on an old CRT monitor.

Posted on Mar 02, 2015

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Posted on Jan 02, 2017

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SOURCE: I have a full compaq

Sounds like your CRT is dying. Sometimes older ones can take longer to turn on, I would suggest upgrading to an economy LCD, they're pretty cheap.

Posted on Mar 01, 2011

  • 83 Answers

SOURCE: My HP 7540 Monitor display upper half only. with

I have come across similar issues and got it resolved by The Best Pc Doctor Team.
You can also contact them on their toll free number.
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877 407 9229(Toll free)

Posted on Oct 03, 2011

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1 Answer

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

1 Answer

Display Collapse


it is repairable but for the cost of parts and labor you would be better of getting a new 22" LCD monitor
for the problem I would suspect the fly-back transformer or power supply

thanks for rating

Jan 09, 2008 | NEC MultiSync FE1250 22" CRT Monitor

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My hp 7540 crt monitor menu displays automatically blinks frequently. please hele me resolve this problem. it stays fixed on the screen, unable to do any work.


<div style="FONT-SIZE: 14px; PADDING-TOP: 10px" itxtvisited="1"><span id="ctl00_ctl00_MainColumn_CenterColumn_ThreadBox1_lblProblem" itxtvisited="1">my hp 7540 crt monitor menu displays automatically blinks frequently. please hele me resolve this problem. it stays fixed on the screen, unable to do any work.</span> </div><!-- answer --><!-- from fixya rte -->

May 12, 2010 | HP S7540 17" CRT Monitor

1 Answer

INEED NO. OF OUTPUT HORIZONTAL LINE TRANSISTOR


If you mean 'flyback' or 'horizontal output transformer' and have the part number available, try one of the sources here:
Flyback links 
If you do not have the number you may have to search Viewsonic's website to loacte it.
Warning; the number of suppliers for CRT monitor parts is shrinking rapidly, my best supplier, ICM in California is long gone. 

Mar 31, 2009 | ViewSonic E70f 17" CRT Monitor

1 Answer

Minitor is shrinked on both side horizontally. The settings are all ok and resolution is perfect. Seem some problem with CRT or something like H/W. Any help on this???


Hi...there,
Open your on-screen display on your monitor, find & press auto adjust. If that doesn't work go to factory reset menu and pressed to reset to original settings.Then reboot your pc.

Jan 28, 2009 | SAMTRON 55V 15" CRT Monitor

1 Answer

I cant get a full screen ,


click the menu butten on your monitor and click positioning and they it should be under horizontal and vertical but if its on the sides click horizontal and use the plus and minus buttens on your monitor to adjust it.

Jan 20, 2009 | SAMTRON 55V 15" CRT Monitor

1 Answer

Monitor display


Im not too sure on how to fix the ungrounded curcit but upgradeing to a lCD panel would completly fix this problem.

Nov 03, 2007 | Dell E771p 17" CRT Monitor

1 Answer

56v-Screen shrinked horizontly


You need to service your monitor. Give it to an authorized service center.

Dec 15, 2006 | SAMTRON 55V 15" CRT Monitor

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