Re: Questions Concerning BIOS Passwords
Ok I’ll have to give that a read, do you by chance have the link to that article?
poisonite
Member
Last Activity: 09-30-2023, 04:15 PM
Joined: 11-04-2019
Location: Arizona
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Re: Questions Concerning BIOS Passwords
Ok thanks, I’ll be sure to do all that when my programmer arrives.
Would you mind sharing what is usually changed in a patched bios to allow it to erase the password, or perhaps point me in the right direction if there’s a guide somewhere on how that works?
Also how will I know whether to use the 24x or 25x side of the programmer? Is this something I can find from the data sheet on the bios chip?Leave a comment:
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Re: Questions Concerning BIOS Passwords
Oh and another question I just thought of, I found this page which seems to have the patch for my laptop. However, the file is a .rom and not a .bin. How would I use that file with the external flash with the 8pin clips as show in the video on my first post?
[url]https://www.badcaps.net/forum/showthread.php?t=81573&highlight=t460[/url]Re: Questions Concerning BIOS Passwo... is a .rom andLeave a comment:
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Re: Questions Concerning BIOS Passwords
Ok I appreciate the info, do you know of a process I can use on newer machines?...Leave a comment:
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Questions Concerning BIOS T460s Passwords
Hi there, Firstly thanks for reading, I've been searching through various threads and videos across the internet for the last little while and I was hoping that the wonderful folks here could help me answer some lingering questions I've got.
So I have several laptops with BIOS passwords that I'm unable to remove conventionally (no good boot drive and backdoor password doesn't exist) like my Lenovo T460s for example. I've been looking into possibly flashing a clean version of the BIOS firmware from a machine that doesn't have a password (most likely one found here on the forums or...Last edited by SMDFlea; 09-15-2020, 08:56 AM. Reason: Renamed thread title,moved to laptop bios requests -
Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Hi, I finally got the parts soldered on and now the fan turns on low for about 5-10 seconds and then turns off and a few moments later repeats in a loop. Any idea what this means?...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
I've ordered a replacement resistor as well as a replacement for the commonly faulty capacitor mentioned earlier. I'll update after i've replaced both components.
Thanks again!...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Also, i forgot to mention that i measured R7305 and it reads 5.10v dc on both sides.Last edited by poisonite; 12-31-2019, 09:15 PM. Reason: Accidently measured the component with the board unplugged (it's been a long night), 5.10v is the real reading.Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Ok, i measured the actual resistance on L7330, it reads OL on both ends with the multimeter in 200Ω mode 1 probe on ground, the other on either side of the component. will replacing R7911 resolve this issue?
Additionally will any 1/16w resister with a 5.1kΩ resistance work to replace R7911?...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Hey, great news (i think). R7911 looks like it was ripped off the board (it's the red one in the included pictures) R3314 is also missing but it looks more like it was intentionally left off even though the schematic doesn't specify it as a "NOSTUFF" part. Also, when i measure L7330 in diode mode it comes back 0.000 (one probe on each contact point). does that mean there's a short or did I measure wrong?
Finally, when i found that r7911 was missing i touched a multimeter probe to each contact...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
All measured using V DC multimeter mode
G3H:
PPBUS_G3H = 12.78v
PPBUS_CPU_IMVP_ISNS = 12.78v
PPDCIN_G3H = 16.90v
PP3V42_G3H = 3.47v
S5:
PP5V_S5 = 5.13v
PP3V3_S5 = 3.39v
S3:
PP5V_S3 = 5.13v
PP3V3_S3 = 3.38v
PP1V5_S3 = 0.00v ( Mesured at c2900)
S0:
PP5V_S0 = 5.13v
PP3V3_S0 = 3.38v
PP1V8_S0 = 1.84v
Sorry for the wait, holidays got crazy lol. These are all the power rails I measured....Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Hi, I just tested PP3V3_S5 and PM_BatLow_L from R1931 with the same testing methodology as before.
PP3V3_S5 @ R1931 = 3.39v
PM_BATLOW_L @ R1931 = 3.38v...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Also, I've been testing with the multimeter set to Volts DC (20) should I set it to a different modeLeave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
When I measure pin 1 on R7080 (PPCDCIN_G3H_OR_PBUS) I get 16.88v (black probe on a ground point and the red probe on pin 1). This is with a new DC-IN board and a new 85W MagSafe 1 charger.
When i connect the board to power (single fan connected only, no RAM) it still doesn't power on by itself even with these new components.
The batteries in my Multimeter should be fine (they were replaced fairly recently but i'll replace again after i get a 9V battery.
Is it possible that there's...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Update: The proper charger should arrive monday or tuesday.
P.S. should i replace the C9560 cap with one that's not prone to failure since kernel panic was common on this year of mac book pro due to the poor cap used here. (with something like this: [url]https://store.rossmanngroup.com/index.php/d3-c7771-c9560-1-piece.html[/url])Re: MacBook Pro 2010 15in 820-2850 A...ould i replace...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Ok the results are in everyone. It should be noted, i tested with a single fan connected and no speaker at the advice of Piernov instead of 2 fans and the speaker. I'm also posting what the schematic i have says each value should be in ().
PPBUS_G3H = 12.79 (Sch: 12.8)
PPBUS_CPU_IMVP_ISNS = 12.79 (Sch: 12.8)
PPDCIN_G3H = 17.19 (Sch: 18.5)
PP3V42_G3H = 3.47 (Sch: 3.42)
I ordered an 85W OEM magsafe 1 as i don't currently have any (only the 60W), however, it won't arrive for a few more days....Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
So my charger is actually only a 60W but it is an OEM charger. Could this be the reason it doesn't fire on as soon as power is connected?
P.S. I'm retesting voltages now, i'm going to probe PPBUS_G3H, PPBUS_CPU_IMVP_ISNS, PPDCIN_G3H,and PP3V42_G3H with nothing connected except for the fans, 1 speaker, and the DC-IN board on the charger. Is there anything else i should test for?...Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
My charger is a genuine MagSafe 1 and I believe it's 80W (will confirm on Tuesday). I'll try with and without battery just for argument sake. I believe I was reading 12.4 or 12.5 on PPBUS_G3H but I'll confirm again when I grab all the other info on Tuesday.
Thanks!!Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
Sorry Dell, I didn’t see the first part of your message.
I thought it was fully powering on when the fans spin as well but when I connect a tested good display I don’t get any image just the spinning fans.
Is there a reason you can think of why the SMC bypass wouldn’t work?Leave a comment:
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Re: MacBook Pro 2010 15in 820-2850 A Unresponsive
1. It doesn't start until I unplug keyboard, but never unprompted (I.e power connect only)
2. I don't totally know The difference between full speed and partial, but it does seem to be running fast (although I don't know how slow they'll go) and I've done it with and without the trackpad being connected and I don't know if my trackpad is good as I haven't tested it in a working machine.
3. No beeps from machine ever
4. Yes green light on MagSafe (at first I wasn't but I realized this was because...Leave a comment:
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