Question about HP COMPAQ 7540 CRT Monitor

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Compaq 7540 screen is blurring and what is the reason behind that?

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It could be EMI by the monitor, or it could just be failing. Try the following.
1. Do you have speakers or other electromagnetic sources (walkie-talkie, cell phones, etc.) sitting close to the monitor? If so, try moving them away from the monitor. They will effect how the electrons from the electron guns hit the color phosphors inside the monitor tube making the display blurry.
2. Try running a monitor diagnostic to check if the monitor is finally failing.
Post back how it works out.

Posted on Jan 05, 2014

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Posted on Jan 02, 2017

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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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1 Answer

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Hi Kartik,
  • You did not mention your Operating System (OS) in the question.
  • But still you can do it by following the link.
  • From the page choose your troubleshoot manual depending on your OS
-rate the post if it helped.

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

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I want audio and video drivers 0f compaq 7540 model.were i can d


hi,
here is the link for downloading drivers of compaq. please select the correct model and operating system. Now you can download for free.

http://h20180.www2.hp.com/apps/Lookup?h_lang=en&h_cc=us&cc=us&h_page=hpcom&lang=en&h_client=S-A-R163-1&h_pagetype=s-002&h_query=7540+&submit.x=11&submit.y=7

Thanks,
Appreciate to rate as "Fixya"

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Your button is stuck. If it is stuck on the external button, try plying it forward with a needle, if it is broken internally, a technician can fix the switch on the board for you.

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