HP DV2700 Changed LCD not always no display

Hi people,

I have a 28 - month old HP DV2700 special edition (Yes with the Nvidia chip dreaded). It worked fine until a week ago, when I decided to clean the keyboard and keys. I had removed the battery so that the laptop would not whenever I hit the button of power by mistake. After I'm done cleaning I booted the laptop, the LCD lit with a glimmer of the backlight, but no video. Activity normal HARD drive and the laptop starts fine with the sounds and everything. Tried to boot several times with the same results. I also did this 45 sec power tip button, without success. Based on the Google search, I did, I made a list of the components could fail and began to exclude one after the other. Here's where I am.

1 NVIDIA chip soldering - well I get a display on the external monitor, which should not be sufficient for this rule? Always I opened the laptop to access the chip down a bit on it and nothing more.

2 inverter & backlight - opens the entire screen and couldn't see the bright backlight. Even the screen brightness controls are working and I can see the screen go dark and bright, but not picture. From what I've read the inverter has only to do with the voltage appropriate to turn off the backlight and has nothing to do with the video stream.

3 display switch stuck - open only to the top also, nothing stuck there. I can clearly see the screen goes black once I press it and shine again when I release him.

4 LCD - convinced that it was the LCD screen, got a replacement from eBay. Guess what? the same thing.

5 LCD water - don't really know how to test that.

I have reached a dead end guys here. Anything else you would recommend?

UPDATE:

Finally bit the bullet and did a REFORMAT on the Nvidia GPU with a hairdryer. The fix for penny to make did also last longer. Works perfectly now. Was surprised to see the video works on the first try.

Tags: Notebooks

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