Question about HP Compaq Presario v3000z Notebook

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Inverter and display are ok but black screen

I think its related to board

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Being an Hp, possibly a GPU issue caused by overheating.

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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A le-24g90 tv sometimes display ok sometimes black, tested capacitors are ok, when black front panel seems to work fine


Back - light problem. 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.

Aug 04, 2016 | Seiki Televison & Video

1 Answer

My Magnavox 40MF401B/F7 turns a blank screen. It has sound but I think it be turning back off too. What maybe the problem?


Back - light problem. 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.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window " to get gathered related posts.

Jun 05, 2016 | Philips 40MF430B/F7 model Magnavox LCD TV,...

1 Answer

Why does screen go black after a few seconds


Hope this helps.... Your monitor has an inverter issue. You know it's an inverter problem when:
1. Your monitor starts normally and displays the startup/desktop screen for a while.
2. Then it suddenly goes off, leaving a blank (black) screen or a very dim display.

To fix this black screen problem, change the inverter board (based on your monitor brand).
Source(s): http://lcdmonitorrepair.annics.com

May 05, 2014 | ASUS VK193D LCD Monitor 19-inch - Black

1 Answer

Soft "Pop", Then Black Screen. Sound is OK.


First check the inverter for any burst capacitors and the display boards.

Aug 28, 2012 | Toshiba 20DL74 20 in. EDTV-Ready LCD...

1 Answer

I have an acer lcd monitor .when i power on the blue buttom acer logo displays for seconds and then black screen ;did anyone had this trouble i check the mainboad power it seems ok


hi how about the power light indicator does stay?. if no, it was a power supply failure. if the light stay then no display totally black it could be either the back light, inverter board or in the logic board ( main board ). to isolate the problem you will need a digital tester, to check turn the power on then check the inverter_on signal if their is a voltage around 4vdc and have a 12v dc supply then the logic board is good. it was an inverter board failure, check for shorted component.

Jul 18, 2012 | Computers & Internet

3 Answers

PACKARD BELL EASYNOTE SJ51. NO INVERTER VOLTAGE. ALL LEDS OK, SOUND OK, BOOTS OK, SCREEN BLACK OR POSSIBLY DIM.


Simple test: get a flashlight, go with the laptop in a dark room and point the flash light at the screen. If you see the image then indeed the inverter isn't working. of you don't see it then the data cable between the motherboard and the screen has been damaged: replace it.
If the inverter is at fault you will need to open the screen cover and check if the inverter board receives power from the motherboard: if it does you need a new inverter board
http://sparepartworld.com/display-inverter-board-for-packard-bell-easynote-sj51/product_info.php/products_id/1724545
If it doesn't then a complete testing of the motherboard will have to take place to find out why and if it can be fixed.

Aug 12, 2011 | Computers & Internet

2 Answers

Polaroid fdm-0700 with black screen display. DVD


go here and order the replacement inverter board. this will fix the backlight issue or no picture issue

http://lcdparts.net/LCDTVInverterdetail.aspx?InverterOriginal=UI8007S-1MSS

Aug 09, 2009 | Polaroid FDM-0700A 7 in. TV/DVD Combo

2 Answers

Toshiba laptop black screen


The backlight on your display is not working, which is why you can dimly see the icons. Power for the backlight comes from a small board called an inverter which is mounted in the bottom edge of the display. It is a common problem for these inverters to fail. There are replacements available from vendors online, and installing the new board is usually a simple job.

In your case, the inverter problem may be due to the hinge trouble you have. The twisting force that damaged the case may also have broken the inverter board or caused its power connection to pull loose. Or the inverter trouble could just be a separate problem. You would need to open the display to check.

There are screws through the front and the front cover snaps in place. Remove the screws and the front cover and you will see the inverter board under the display panel. There are connectors at both ends. One is the power for the inverter and the other is the connection to the backlight. Make sure they are seated and that there is no visible damage to the inverter board.

Replacement hinges may also be available for your computer. Search for them and an inverter by looking for your paticular model.

Apr 01, 2009 | Toshiba Satellite L15-S104 Notebook

2 Answers

Only have a black screen Samsung SyncMaster 153V


It is either the Inverter board inside or the ccfl is faulty. Don't waste time, not worth to repair.

Jan 17, 2009 | Samsung SyncMaster 153V 15" Flat Panel LCD...

1 Answer

LCD screen partially display's


This kind of issue is usually due to a loose inverter cable, re-seating the cable is a relatively simple matter. 
If the laptop is still under warranty you should contact Dell to have it repaired, if on the other hand it is out of warranty you should shop around for a repair quote unless you are absolutely confident you can strip and reassemble your laptop.

Mar 13, 2008 | Dell Inspiron 6400 Notebook

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