survivalbloke
Badcaps Veteran
Last Activity: 03-24-2025, 12:46 PM
Joined: 08-01-2021
Location: Maryland
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Thank you for the response! I did remove the WLAN adapter from the M.2 but the fault persists.... -
Lenovo Flex 5 14ITL05 - will only sleep if commanded to through start menu>power icon
This laptop refuses to sleep unless specifically commanded to sleep through Windows. If I close the lid, the screen does go dark just before the lid is closed, so it appears the hall sensor works. However, it will sit there, drawing 1.xx amps until the battery dies. If I command it to sleep, it drops down to normal sleeping current. If I have it sleeping with lid closed and I disconnect the power adapter, it will wake from sleep, even with the lid closed. I have updated the firmware, but still the fault persists. I've also verified power settings in Windows that the device is to sleep when the...Last edited by survivalbloke; 03-20-2025, 02:49 PM. -
How do I tell the suffix?...Leave a comment:
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This is a Dell Latitude 5591, ST: B168QQ2, board# DDP80-LA-F712P Rev 1.0 (A00). I did quite a bit of searching because I'd really like to learn this skill for myself, for the future. I didn't find anything conclusive, though, so I was hoping one of the geniuses here could unlock this BIOS for me. I would so greatly appreciate it....Leave a comment:
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Thanks!...Leave a comment:
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which solder board/adapter for my CH341a do I need to use a 25B256DYIG IC?
This is, I believe, the BIOS chip for this dell latitude 5591. It has a locked admin password on the BIOS, so I need to reflash, but I'm wondering which adapter I need to use with my CH341a. None of my board seem like the correct adapter. -
HP ENVY 360 - no power, taking no current
HP ENVY x360
15-dr1072ms
SN 8CG0215FQ6
Prod 13Q17UA#ABA
Board# 448.0GB12.0011
This device came in as no power. It is taking 0a current. I noticed a little liquid damage to the LCD connector and cleaned that off. I have 19v at the input mosfets, and on the opposite side of the board, there are several (diodes?) which all have 19v. There is a cap there which has 19v on one side, but 6.5v on the other - how?
The only other live power rail I have found on the board, is 16V on one of the coils. There doesn't seem to be a 5V or 3.3V present. A couple... -
MacBook Pro A2442, board 820-0298-A, no backlight
I'm working on a MacBook Pro A2442, board 820-0298-A. This device was liquid damaged and had no power. After I repaired the liquid damage, I find the device powers on and works with external video, but backlight is not working.
Anyway, I really want to improve my fault tracing skills, instead of having to rely on others to always tell me where to look and what to check. In this case, I have a question about navigating schematics. If I wanted to trace the backlight power circuit, how do I find where that circuit begins? If I search for "lcd" in the schamtic, it is listed...Last edited by survivalbloke; 11-21-2024, 11:52 AM. -
Hey, supposing the instructions I listed in post#13 of this thread are correct, I did that but the device does the same thing. I power it up and the fan spins high, nothing else happening. Cooked board you think?...Leave a comment:
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OHHHH, so then, I would:
1. Open the original BIOS in a hex editor
2. Copy everything from 61BF00-63DF3F
3. Open new BIOS file
4. Paste that info into 61BF00-63DF3F
5. Save the BIOS file and flash to chip
Correct?...Leave a comment:
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but what does "@ 61BF00-63DF3F" mean? What are the instructions? I'm not experienced enough to understand, but I'll remember once I'm told....Leave a comment:
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I feel really stupid. Is that a repaired BIOS you've attached? I presume it is, so I'll go ahead and flash that, and thank you. I'm a bit confused on the second part. I've searched a bit and discovered DMI is the HP app to install the serial number, etc into the firmware, but what do you mean by "WINKEY @ 61BF00-63DF3F"? It's tough hanging with the big dogs on here lol....Leave a comment:
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Here it is!...Leave a comment:
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Interesting, I searched for that on alldatasheets but it didn't pull up correctly. I think I found it up by the CPU. It's Winbond 25Q64. That must be it. I'll be back with the backup. Thank you SO much for the help....Leave a comment:
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Is it this one? This is the only other BIOS-looking chip on this side of the board. Perhaps it's on the bottom side?...
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ok, I'll have another look, ty....Leave a comment:
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HP Spectre x360 15-bl012dx BIOS needed
Upon pressing the power button, all that happens is immediately the fans spin on high. It will sit and do that indefinitely until a hard power-down is performed. No video, no post, no nothing.
Model# 15-bl012dx
SN# 5CD7246XYQ
Prod# Z4Z35UA
Board# DA0X32MBAGO REV: G
backup attached.... -
If I flash this bios file, will it just work, or does it need the ME cleaning?
I'm not a super pro like some here, when it comes to firmware. I have a machine with the following specs:
ENVY X360
15-ew0013dx
SN: CND2261KS3
Prod: 698V0UA
Board: LA-M021P Rev 1A
Chip# Winbond 25R128JVSN
Basically, when I power it up, I get no video, and the fans run hard - nothing else. Seems like a BIOS issue to me, so I posted a request in the BIOS request section. I haven't heard anything back(and that's fine) So I tried downloading the BIOS from HP, then I extracted it and flashed it onto the chip. Unfortunately, all I get is the power... -
Any chance of a quick lesson on how to locate the SOC and Power manage ICs? Basically, my skill level is great in soldering, but finding board faults(unless there's a dead short and I use thermal) is not great. Also, my ability to interpret schematics is lacking
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Just did that. Odd that I'm not getting the same numbers on both sets of caps. I also have a dead short to ground at PBUS_SPKRAMP_RIGHT_ISNS but it draws no current with voltage injection....Leave a comment:
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