Comments on: Display Dim In HP L1955 19″ LCD Monitor https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 13 Aug 2012 17:19:22 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Jestine Yong https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-111155 Mon, 13 Aug 2012 17:19:22 +0000 https://www.jestineyong.com/?p=735#comment-111155 In reply to Hassan.

Hi Hassan,

Noise usually comes from inductor or transformer. Try open up the monitor and gently know the inductor/transformer with the handle of the screw drive to see if the sound will go away or not.

Jestine

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]]> By: Hassan https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-110729 Sun, 12 Aug 2012 03:57:44 +0000 https://www.jestineyong.com/?p=735#comment-110729 Dear Jestine,

I have hp Lcd model L1955 and problem is that i have found some noise from chopper transformer which result that i hear same sound from my pc speaker.Kindly give me the solutions.

Hassan

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]]> By: admin https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-6720 Mon, 06 Sep 2010 22:54:21 +0000 https://www.jestineyong.com/?p=735#comment-6720 HI William,

Is all the output voltages good from the power supply? Does the inverter ic have any supply voltage?

Jestine

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]]> By: Williams Adebowale https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-6719 Mon, 06 Sep 2010 22:36:46 +0000 https://www.jestineyong.com/?p=735#comment-6719 I am working on this same Monitor, but can't display on the screen

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]]> By: admin https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-5035 Wed, 31 Mar 2010 01:12:00 +0000 https://www.jestineyong.com/?p=735#comment-5035 HI Kazi,

I guess you may have to reprogram the EEprom IC.

Jestine

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]]> By: Kazi Baki https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-5030 Tue, 30 Mar 2010 20:01:28 +0000 https://www.jestineyong.com/?p=735#comment-5030 Dear Jestine,
I have Philips 17 inch LCD, model 107s, allways show popup, attention
monitor control system locked, this model is common problem,pls say some thing about this
thanks

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]]> By: admin https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-3421 Fri, 11 Sep 2009 13:32:15 +0000 https://www.jestineyong.com/?p=735#comment-3421 HI Jose,

You need to remove the transistor and test it with meter.

Jestine

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]]> By: Jose E. Kunhardt https://jestineyong.com/display-dim-in-hp-l1955-19-lcd-monitor/comment-page-1/#comment-3415 Fri, 11 Sep 2009 00:41:46 +0000 https://www.jestineyong.com/?p=735#comment-3415 I am working on the same monitor but i have no idea how to identify if the c5707 push pull transistors are burnt, i dont see any bulging on the transistors. i should clarify that i dont get a dim display on this unit but a black screnn with a resposive power button and power switch.

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