Toshiba C850-19D no image

[dmartins]

Hello,

I have a C850 without image,
It's a celeron With intel vga,
Already flash bios without sucess,

Any idea?

I read some threads about it , and i think that send the computer to trash seems a better idea

[highpulse]

Re: Toshiba C850-19D no image

nope ,

without hschematic its hard to read lvds pins .

first things to do
chek lvds connector both sides screen and motherboard for bent pins (somethimes people cleaning board when they attach things , they bend or break pins , chek it also cpu replace and rams replace.
second thing , chek consume with power lab source you should have near 1 amp for this machine if its less then chek all cores on S0 they all must give voltages.
third if all things are ok above , then flash bios , in the end if not well mux or PCH , but mux very rarely its damaged , so o believe more on pch

[dmartins]

Re: Toshiba C850-19D no image

The connectors are OK ,
CPU and rams replaced , still the same,
Flash bios done and still the same..

[Djosla]

Re: Toshiba C850-19D no image

it`s pch buddy, very common on these...

[dmartins]

Re: Toshiba C850-19D no image

maybe try reflow first or buy a new chip and reball ?

[Djosla]

Re: Toshiba C850-19D no image

you can try, but based from my expirience you will have to change it... i wouldn`t bother reballing...you sure have this chipset in spare from donor boards...make sure you do the bios update after changing pch with clean me region...

[highpulse]

Re: Toshiba C850-19D no image

yes as djosla sayedd , after pch replacement , fix ME region on main bios .