Toshiba Satellite C840-PSC6EL need Help..!

[degutji]

Dear All..

Received with Condition power on but no display, on my DC Bench Supply only 0.780 A. Everything look's like get power except ATI GPU still cold when I touch with my finger. All I have done :
1. Flash Bios ( grab it from toshiba web )
2. Change CPU
3. Reballing ATI 216-0810028
4. Reballing Intel HM76
5. Resoldering every Caps, Coil and PU

With no change, still same at first condition 0.780A but without memory the current raise up to 1.250A. Working without schematic, can't find schematic for this type DABY3CMB8E0 REV:E - Model : BY3C. Any help would be appreciated

Regards

[dj_ricoh]

Re: Toshiba Satellite C840-PSC6EL need Help..!

find a pentium processor and test it.
bealive! i seen it 2 weeks ago when a cpu when FUBAR but the problem was that i putt that broken cpu in another unit and it work and in the broken unit i putt the same CPU and it came to life.
don`t ask me what happen :-s i`m clueless

[degutji]

Re: Toshiba Satellite C840-PSC6EL need Help..!

find a pentium processor and test it.
bealive! i seen it 2 weeks ago when a cpu when FUBAR but the problem was that i putt that broken cpu in another unit and it work and in the broken unit i putt the same CPU and it came to life.
don`t ask me what happen :-s i`m clueless

Have try that , you can read on my post # 2 . btw this one core i3 new model

[khaahk]

Re: Toshiba Satellite C840-PSC6EL need Help..!

Attach post card to LPC, google for "WPCE885L pdf", you should find some shcematics which might be similar. The LPC test pins might be on wlan minipcie socket also. Upload backup of original bios. The discrete GPU might not be in use at first - hence no power supplied to it.

[degutji]

Re: Toshiba Satellite C840-PSC6EL need Help..!

Attach post card to LPC, google for "WPCE885L pdf", you should find some shcematics which might be similar. The LPC test pins might be on wlan minipcie socket also. Upload backup of original bios. The discrete GPU might not be in use at first - hence no power supplied to it.

Thank's khaahk. Actually I have no Post Card yet (WTB )
And it's NUVOTON NPCE885LA0DX on board C840, google it and just find one quite similar ZQTA-ZQSA Board that I don't know what laptop is, here is I attach original Bios and from Toshiba web

MOD EDIT: Bios moved to new thread https://www.badcaps.net/forum/showthread.php?p=1095026

Regards

[whaldsz]

Re: Toshiba Satellite C840-PSC6EL need Help..!

Thank's khaahk. Actually I have no Post Card yet (WTB )
And it's NUVOTON NPCE885LA0DX on board C840, google it and just find one quite similar ZQTA-ZQSA Board that I don't know what laptop is, here is I attach original Bios and from Toshiba web

Regards

ZQSA is the board number for Acer V3-471G.

[khaahk]

Re: Toshiba Satellite C840-PSC6EL need Help..!

Attached bios with old ME and new bios, though doubt it will help. Have you tried swapping with known working RAM?

MOD EDIT: Bios moved to new thread https://www.badcaps.net/forum/showthread.php?p=1095026
.

[degutji]

Re: Toshiba Satellite C840-PSC6EL need Help..!

Attached bios with old ME and new bios, though doubt it will help. Have you tried swapping with known working RAM?

swapping is my S.O.P
Ok. I'll post the result after flash it

Regards

[meritosari]

Re: Toshiba Satellite C840-PSC6EL need Help..!

may have been solved

[Boys09]

Re: Toshiba Satellite C840-PSC6EL need Help..!

Thanks you