huawei nbl-wap9r

[reset1986]

Hi, I have this Huawei which shows a black screen when turned on, I need a working bios, the original backup is attached

mainboard ryzen 7
model huawei nbl-wap9r
dah98ambad0 rev d
sn/ g2qpm20b18001553

Thanks

[volinakis]

Hi, I have this Huawei which shows a black screen when turned on, I need a working bios, the original backup is attached

mainboard ryzen 7
model huawei nbl-wap9r
dah98ambad0 rev d
sn/ g2qpm20b18001553

Thanks

try

[reset1986]

try

I wrote the bios, screen still black, the fan doesn't turn, I noticed that after 15 seconds the laptop restarts, and the LED near the connector flashes quickly, solutions?the chip is a windond 25q64FW

[volinakis]

I wrote the bios, screen still black, the fan doesn't turn, I noticed that after 15 seconds the laptop restarts, and the LED near the connector flashes quickly, solutions?the chip is a windond 25q64FW

bios is extracted from update and transferred your DMI. Check soldering and let it run for 2 minutes to load new settings

[reset1986]

bios is extracted from update and transferred your DMI. Check soldering and let it run for 2 minutes to load new settings

once this is done the situation does not change, I carried out some measurements and I find pin 8 of the 25q64fw at around 3 ohms, it seems too little, I desoldered the chip and injected 1.8v on pin 8 and it consumes around 1.4A and I find that the cpu heats up, I think the CPU is damaged, opinions?

[volinakis]

once this is done the situation does not change, I carried out some measurements and I find pin 8 of the 25q64fw at around 3 ohms, it seems too little, I desoldered the chip and injected 1.8v on pin 8 and it consumes around 1.4A and I find that the cpu heats up, I think the CPU is damaged, opinions?

remove bios chipset and see if it's not damaged (impedance to pin 8 pad should be >3ohm, also check diode to pin 8 pad) take a photo with bios chipset and components around it.

[reset1986]

remove bios chipset and see if it's not damaged (impedance to pin 8 pad should be >3ohm, also check diode to pin 8 pad) take a photo with bios chipset and components around it.

Thanks for the help, but I delivered it to the customer unrepairable