Macbook A1398 bios/EFI password reset

[Prototecho]

Hi guys,

A1398 efi password.
Emc2909
Board : 820-00138-A

I've attempted to delete the bios/efi password for a mabook Pro 15" that I bought from a fellow who sold me some programming books. It was in working condition but unable to be unlocked because he couldn't remember the passwords. Unfortunately, after flashing the BIOS with my attempt to remove the EFI password, all I get is fans spinning, black screen, seems like the EFI is not operational. Touch pad becomes active (haptic feedback) but external USB keyboard is not and only the power button on the...

[protocold]

I would like to get some help on a 820-2850 logic board with intermittent charging problem. Sometimes the battery will charge all the way and sometimes magsafe would be cycling between green and orange.

I have already tried replacing dc-in board, swapping good battery, swapping genuine 85w chargers. None of that helps..

when it is not intermittent:
PPVBAT_G3H_CHGR_R is 12.07v

when it is intermittent:
When the light is green, PPVBAT_G3H_CHGR_R is 12.99v
when the light is orange, PPVBAT_G3H_CHGR_R is 11.62v

data line on the battery...

[PacoGT]

hello the bmotherboard is on short
the ic on short is in the pic
i dont see the model of ic
can you help me ?
identify the ic on short ...

[Simplebeans]

I am currently attempting to repair this television.

Currently the television stays in standby mode (red light on the television) even after attempting to switch it on via the remote control or controls on the television itself. I have opened the television up and there was a electrolytic capacitor that looked bad therefore replaced this however this has made no difference and the same issue still persists.

I am now thinking that this could be a EPROM issue? If yes, i have not yet been able to locate a EPROM dump for this make and model of television, if anyone can help...

[Bradbeat]

Hi everyone,
Could you please provide me the .brd bordview for Alienware area 51m R1 DDQ70 LA-G881P rev : 1.0 ?
Thank you already.

[OntarioTL]

Well I've learned something new today. Of all the Dell laptops I've come across I have never seen bluetooth greyed out, and only to learn this is during the build from Dell factory. I've tried to pull the original BIOS and fix with another dell with the same issue on the forums, however the original was not recovered from the forum upgrade so I cannot do a comparison to attempt the fix on my own.

If someone could help me out with this unit and I'll try the next one as so far I have 2 on my desk with this issue. Thanks in advance!

Dell Lattitude 5410
Service Tag...

[marc_ytos]

Hi, could you help me activate the Computrace BIOS on my L14 gen 3 computer, PW-05ZLP7 series, motherboard 203030-1? Thank you very much in advance....

[Lurky]

Hello
Please help me with bios password unlock for Lenovo v14 g5 IRL
Board id: LV490&LV590 NM-G091 REV 1.0
SN: PF5L40LZ
Both 8mb and 16 mb dumps attached...

[Gueric]

Hey mon, its me again (sorry) so after fixing my own Mac I’m back to try and fix another one.

I changed a CD3217 on this one. And it started bootlooping a few hours after the fix.

5v, 0.20-0.30A for the first few seconds then drops to 0.00-0.05A.

PPBUS_AON is 12v.
PP5V_S2 is present.
PP1V25_S2 is present.
PP3V3_S2 is present.
PP3V8_AON is 3.8v, but its diode mode was abnormally low (.150v instead .350v)
And to make it even worse I accidentally touched PPBUS and 3V8 with my meter and the resistance is now 100 ohms (don’t...

[Bradbeat]

Hi guys,
I'm new to "all of this" but i'm very eager to learn.
Here is the situation, I just bought an second hand alienware whose description was roughly this:

"don't boot after a bios downgrade, 2 red and 1 blue code".

I thought as a complete noob that it was a good opportunity to start learning 😁, i think that i will learn a lot before it work again😂.
I searched for the service tag in this forum, maybe by chance i would have some info...
And here it is :
https://www.badcaps.net/forum/troubl...ardware-device...