Question about HP LC3040N 30 in. HD-Ready LCD Television

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HP LC3040N Screen

Screen flashes for a second then it goes blank

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I had the same thing happen, replaced the backlight inverter and it works fine. I got mine from http://www.lcdparts.net/LCDTVInverterdetail.aspx?InverterOriginal=V144-001MSS.

Posted on Mar 07, 2008

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I have an HP LC3040N /MODEL:HSTND-3L02. The screen is black, and it has sound. The right side of the screen lights up for 3 seconds, then goes black. Is there a replacement light/s for my TV?


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board..

Nov 13, 2016 | HP Flat Panel Televisions

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Hp 2509m picture stays on for a few seconds then goes to Black


I had the same issue, It actually turned out to be the backlights themselves. An easy way to check this is by shining a bright light on the screen while its on. you should be able to see the picture.

Feb 20, 2012 | HP 2509m 25 in. TV

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Hp lc3040n tv screen flaches then goes black. changed inverter and motherboard! no help.


How about the power supply 24vdc output?

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

Jul 21, 2010 | HP LC3040N 30 in. HD-Ready LCD Television

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Sharp aquos display comes on for a few seconds then blank screen


I have the same problem with my 37" HP which is the same as Sharp Aquos, it's bad backlight inverter boards, the screen comes on for a second then nothing, no menu, no channel change indicator then turn it off and you hear the clicking of the power supply about 10 seconds after.

Jan 01, 2009 | Sharp Aquos LC-32G4U 32 in. HD-Ready LCD...

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HP LC3040N I have sound but no image


In my case, the backlight flashed on for less than a second, then went out. Turns out the backlight inverter was bad. I replaced it (got mine at http://www.lcdparts.net/LCDTVInverterdetail.aspx?InverterOriginal=V144-001MSS) and everything works fine.

Nov 12, 2007 | HP LC3040N 30 in. HD-Ready LCD Television

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Screen goes bright after 1 hour of use


I have the same problem when switching component inputs. I also had a problem with the backlight going off after 10secs-5mins. Which is still being resolved.

Oct 01, 2007 | HP LC3040N 30 in. HD-Ready LCD Television

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