Dell 3521 7 beeps and no display

[mnciks11]

Hello guys

Im current working on the Dell
VAW00 LA-9104P
Rev : 1.0

7 beeps and no display

Measurements:
I have all other necessary volts
The Gfx core is missing, 0v.
Fan spins constantly

I changed the bios chips both of them with another same board but still no lucky

[mcplslg123]

Re: Dell 3521 7 beeps and no display

Check PU400 requirements or replace this chip if you have difficulty in measuring. Be very careful-your probes should be needle sharp.

[mnciks11]

Re: Dell 3521 7 beeps and no display

Check PU400 requirements or replace this chip if you have difficulty in measuring. Be very careful-your probes should be needle sharp.

Okay let me do it now coz i have another replacement chip

[mnciks11]

Re: Dell 3521 7 beeps and no display

Check PU400 requirements or replace this chip if you have difficulty in measuring. Be very careful-your probes should be needle sharp.

I changed the chip but still no lucky, let me put another one and see

[SMDFlea]

Re: Dell 3521 7 beeps and no display

Did you clean the ME firmware on the original bios, or on the replacement bios.

[mnciks11]

Re: Dell 3521 7 beeps and no display

Did you clean the ME firmware on the original bios, or on the replacement bios.

No I didn't

[ayooon_2010]

Re: Dell 3521 7 beeps and no display

check cpu circuit . after change cpu

[mcplslg123]

Re: Dell 3521 7 beeps and no display

check cpu circuit . after change cpu

Cpu is onboard soldered and dont change it without being sure.

[kiraro]

Re: Dell 3521 7 beeps and no display

Remove PJP1100 and PJP800, see if the mb post or changing beep code.

[abderrahimfouad]

Re: Dell 3521 7 beeps and no display

Remove PJP1100 and PJP800, see if the mb post or changing beep code.

same problem bro

[lapfix]

Re: Dell 3521 7 beeps and no display

same problem bro

Bios can make this issue, dump io too
pu 500 pin1 voltage
uz1 voltage