Fuzzy graphics with incorrect, faded pastel colors - Dell Inspiron 15R (7520) 7730M

Hallo,

There seems to be some available in Australia recently, and was asked to help the owner to fix it.

Symptoms: Graphics blurred with incorrect, faded to the pastel colors.

On an external monitor, the graphics are OK.

Flat screen, even when starting, the display is fuzzy with colors that don't seem to one (or more) components. Strangely, during POST the color is not consistent always the same and instead of black, it's either a pastel red, sometimes yellow, sometimes lime green tint.

Given the nature of the fault (on external monitor colors are OK), I have concluded that the two graphics cards are OK and the problem was due to BIOS, faulty LED panel or display faulty or loose cable.

To this day, I spent countless hours (days) on it.

I have:

update BIOS to A09

reinstall all the drivers for Win8

installed new HARD drive and put Win7 on it to check if maybe Win8 installation is not corrupted (no recovery media).

He took display disassembled and re-sat cable

bought and replaced the display LED THE Optronics B156HW02 V.1: NEW Panel / W:1 A F / l: 1

All to no effect.

I welcome suggestions.

Below I will (try to) insert some images as they are apparently worth a thousand Word each...

Well, here's the solution:

What was causing blurred graphics in Dell 7520 (15R SE) was incorrect (taking into account the resolution of 1920 x 1080 FHD Panel) factory equipped with the display cable.

The mounted cable was CNNGH (DC02001 |) C10 or "QCL00 câble LVDS - HD"). Suspect that it is defective, I bought and fitted a replacement who was an exactly the same thing.

What should be installed was the R4WW7 (DC02001GD10 or "QCL00 LVDS cable FHD").

Whatever it took to find, had to buy another phone, disassemble, Exchange parts and then buy the right cable. And almost 2 weeks to pull the hair out of my head.

Someone needs the Inspiron 15R SE 7520?

I have 2 of those - one with warranty, without work brilliantly. Open to offers.

Also have a spare HD 1920 x 1080 to THE Panel with good cable Optronics

included.

:-)

Hope this helps someone.

Tags: Dell Laptop

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