Sony, HP, Tosi screen problem

[Prosatanosz]

Hi!

What caused the pictured problem? Screen, cable, vga chip surely not. I have more laptops with this syndrome. One time i replaced the lcd cable socket on HP CQ56 motherboard. No luck. The colors varies per display, some display is only black with backlight.

[mosfetratus]

Re: Sony, HP, Tosi screen problem

What do you get on external monitor?

could be bad TCON on the lcd itself.

[Prosatanosz]

Re: Sony, HP, Tosi screen problem

Hi!

Currently on Vaio RGB and hdmi ok. LCD and cable is ok for sure.

[mosfetratus]

Re: Sony, HP, Tosi screen problem

Hi!

Currently on Vaio RGB and hdmi ok. LCD and cable is ok for sure.

That means faulty laptop LCD, because it has light and shows color, it highly could be tcon, it could be swapped with new one.

[Prosatanosz]

Re: Sony, HP, Tosi screen problem

That means faulty laptop LCD, because it has light and shows color, it highly could be tcon, it could be swapped with new one.

LCD is ok, tested on other laptop, and other lcds show same problems in Vaio

[SMDFlea]

Re: Sony, HP, Tosi screen problem

Some of the older vaios have a small 4 way dipswitch on the motherboard that needs changing switch positions if you install another compatible LCD screen. Check the schematic . Flashing the EDID eeprom can also help in a few cases.

EDIT: picture is from an MBX-202 M790 schematic. The switch has 4 positions, 0-3 for each different lcd. The 1`s and 0`s are binary,reading from right to left .

[ktmmotocross]

Re: Sony, HP, Tosi screen problem

Some of the older vaios have a small 4 way dipswitch on the motherboard that needs changing switch positions if you install another compatible LCD screen. Check the schematic . Flashing the EDID eeprom can also help in a few cases.

EDIT: picture is from an MBX-202 M790 schematic. The switch has 4 positions, 0-3 for each different lcd. The 1`s and 0`s are binary,reading from right to left .

nice one man

[Prosatanosz]

Re: Sony, HP, Tosi screen problem

Thx SMDFlea, but this is not the case.

[SMDFlea]

Re: Sony, HP, Tosi screen problem

What model number is the vaio .

[Prosatanosz]

Re: Sony, HP, Tosi screen problem

Pcg-71211m

[SMDFlea]

Re: Sony, HP, Tosi screen problem

Pcg-71211m

Is the motherboard an MBX-224 M960 .Here`s a schematic, if its the right one ,check page 35 for the panel ID switch .

https://cdn.badcaps-static.com/pdfs/...971f4350d3.pdf

[lefos]

Re: Sony, HP, Tosi screen problem

Hello,

On the VAIO what is the code of the gpu chipset?
I had similar problem where internal picture had problem but external was OK and the problem was from the gpu chipset.
If I am correct this vaio series have an ati gpu - 2 types right?