satellite c55dt-a5305

[fddizon]

hi guys,

the unit has no power with ALW signals present, 3.3v power switch present

Looking for schematic of this laptop and BIOS dump. pls include NPCE985LA0DX SIO chip datasheet if available.

thanks

uploaded bios dump. does anyone has this bios file?

[ala_borbe]

Re: satellite c55dt-a5305

here you go

[fddizon]

Re: satellite c55dt-a5305

thanks... will do this tonight. will update you the laptop status.

[fddizon]

Re: satellite c55dt-a5305

reflashed bios - the same symptoms.
anyone encountered this issue?

please share schematic if you have one thanks

no rmsrst
no pltrst
.64 volts on pin3 of bios -

[dj_ricoh]

Re: satellite c55dt-a5305

Find the first qfn chip near charging port.
We can start from there and see if it gives 3.3v

[fddizon]

Re: satellite c55dt-a5305

3.3 volts present on charging pins

SIO does not produce RSMRST and PLTRST
board has no dedicated pch chip nor dedicated gpu

only processor that has them all in it sodered on the mobo just a bga chip

already tried reflowing the processor to no avail. (dont have a bga machine)