Samsung R469 bios file

[lezsimply]

Guys does anyone have bios file for Samsung R469? motherboard code: BA41-01100A rev. 1.0

Unit totally dead no power. power button have 3v. Thanks

[alihomee]

Re: Samsung R469 bios file

check voltage on battery connector and on bios chip also

[lezsimply]

Re: Samsung R469 bios file

thanks man. after a little bit of cleaning. now it turns on. It has power but no display.

voltage on battery connector (batt conn):

pin 6 and 7= .36v
pin 4 and 5= 3.36v
pin 3 = 2.5v
pin 1 and 2 = ground

bios voltage:

pin 7 = 3.30v
pin 8 = 3.33v

the rest pins are zero volt. voltages are taken with laptop off and with charger attached

[aanan]

Re: Samsung R469 bios file

check charger ckt page no 52.
aanan.

[lezsimply]

Re: Samsung R469 bios file

what do you mean ckt? unit has power I suppose so. but fan does not spin. Leds are light on power and on switch button. still need bios file. hope someon has. thanks

[aanan]

Re: Samsung R469 bios file

try this.

[lezsimply]

Re: Samsung R469 bios file

thanks man. I will try this. I'll update you guys soon

[lezsimply]

Re: Samsung R469 bios file

update on this. I already reprogram bios using aanan file but still no go. I also replaced nec tokin but same issue. Laptop turns on but cpu fan does not spin and gives no display on screen. Do you think this is related to video chip which is an Nvidia N10m?

[dj_ricoh]

Re: Samsung R469 bios file

my money its on that NVidia chip!

[lezsimply]

Re: Samsung R469 bios file

hmm tried a soft reflow on gpu but still no cpu fan spin. I did check on voltages and found no voltage on Pin no.1 and no.3 of J3 fan connector. Also notice there's no voltage on L11 3.3v and L10 5v of TPS 51125 ic. This should be my Alw voltages right?

Pin 8 vreg3 3v is present
pin 17 vereg5 5v is present

Test done only on charger without processor, memory and cmos battery. Having hard time locating components as only limited prints on the board

[ktmmotocross]

Re: Samsung R469 bios file

look for shorts on this ic