Sorry I was away only just got chance to try this, still the same result. Power cycling
EDIT: BIOS files from post https://www.badcaps.net/forum/troubl...99#post3573099 work and the laptop boots however fans are running at 100%...
tccyo22
Senior Member
Last Activity: 07-15-2026, 08:01 AM
Joined: 10-29-2019
Location: London
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No short on this rail. I've managed to get it to boot after finding 1 resistor that was partially failed around the damaged area. Always worth going back to double check sometimes as I had missed one or as they say, can't see for looking....Leave a comment:
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Macbook A2251 820-01949A - 20v not powering on or charging
Hi there, this one has me stumped. Quick back story is this macbook had a very small liquid damage on one side of charge ports which burnt the connector. I've currently got that side of USB ports disconnected and I've replaced the connector and the CD3217 that was stopping the macbook from transitioning to 20v. (It was originally stuck at 5v 0a) and I'm using the other side to diagnose this board.
I now get 20v and it appears as though the macbook is attempting to boot but it's failing? On connection of usb power I watch the voltage swap from 5v to 20v and sit at 0.1a for 2-3 seconds... -
I'm having trouble trying to clean the ME on this BIOS for this laptop and wondering if there is something I'm missing. Power cycling in 3 stages with no display.
Service Tag: FPHNZ93
Board: SELEK MLK N18E 19753-1...Leave a comment:
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Thank you so much! Not sure what happened with the original BIOS. I tried dumping it multiple times with different readers too; all the same. It wouldn't POST or stay powered on when I got the laptop. I've looked everywhere for a CT number that has PJ***, found several but none for the board. Had the whole thing apart to try find it but I guess that sticker has gone to another dimension....Leave a comment:
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I'm having trouble inserting the DMI information into a fresh BIOS from HP's website as the original BIOS was corrupted so wondering if someone can help. I can insert some items using HP BCU but I get access denied for the main ones, I imagine they're read only and haven't quite figured out what to do here (I have secure boot disabled and MPM enabled)
I've included the original corrupted BIOS and the working one without DMI
S/N: CND2043XVL
SKU: 2B4Q5EA#ABU
Build ID: 20WW4MST604#SABU#DABU
FeatureByte: 3K6b7K7P7WaBapaqasawbCbhcbdTdqfPhYjnkPm3m9pJ.8E...Leave a comment:
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Thank you so much for sharing this. The yellow pad is missing as well so I'm going to assume where that trace to the left isn't connected to somewhere that the line draws to the right towards what is most probably U22A1 (also very likely under the shield unless i can connect a wire somewhere else). I've got the iPad switched on and it seems to be mostly working aside from the lack of charging which is expected if a trace is missing...Leave a comment:
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Thanks, figured it might be. Just gotta find the value now, unfortunately don't have another one of these to check or pinch one from....Leave a comment:
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iPad Pro 11-inch (4th Generation) A2759 - Missing component
Manged to get a hold of an iPad Pro 11" 4th Gen however it does not charge and upon opening it looks like someone has tried to replace the port and knocked a component off but I cannot find a schematic or boardview for this model so was wondering if anyone could help identify what I think is a missing pad and capacitor? Looks like whoever was in here last tried to put it back on with hot air and melted the plastics too......
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Thanks for the help. I got it booted but back again to crashing whenever I try to boot to any USB or SSD and this is with the BIOS from the HP website so something else is going on. Will work on this one but at this point don't think its BIOS or Intel ME related.Leave a comment:
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Ok thanks, will report back with results...Leave a comment:
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Was about to ask about that as I found the thread to find the information of which BIOS to grab from the HP website but there is 7 different ones and of course, cannot use BID to find which one from that dump. Is there any other way to telling which I would need or is it going to be a case of flashing each one until it works?...Leave a comment:
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This is what I thought might be the case. This dump was the 3rd read - all 3 the same. I guess I'll need to grab a BIOS and add the DMI information....Leave a comment:
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Hey there! Would love some assistance with figuring this one out. The laptop would originally boot to BIOS, however anytime you tried to boot to USB/HDD or anything it would crash almost immediately after booting to any device and I know they were fine because they boot on all my other devices just fine.
I initially tried an ME clean however I would get the message "File does not contain Intel ME firmware" and now the laptop is turning on then off currently.
S/N: CND2043XVL
Original BIOS dump attached.
...Leave a comment:
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PS5 EDM-020 CFI-1116A Disc Edition - 1 Beep No Power/Light
Hi there, I have an EDM-020 CFI-1116A Disc Edition PS5. It originally had the 3 beeps on power which after grabbing a known working BIOS for this board and model it now will beep once every 20 seconds hitting the power button but will not turn on.
So far I have checked all voltage rails and everything seems to be present from 12v all the way down to 0.8v rails. However I am unable to connect to and read the UART and get error codes. Also something I found in my measurements is the bank of coils for the APU read 0.3ohms. Now I know that CPU/GPU lines have low resistance but I'm not... -
MacBook Air 13" 2020 A2179 Audio Board
Hey all! I have a MacBook Air 13" 2020 A2179 that won't switch on with the audio board connected so before just replacing it outright I took a quick look and found a cracked cap and short. Removed the cap and the short has gone so want to replace the cap to see if we can use this audio board still.
TL;DR Anyone know the value of the cap circled in red in the attached picture?... -
The 2N chip does not get warm, there isn't really any sign of heat anywhere with the charger plugged in. I do have a particularly low reading on a 3VA_EC (<1k) on the SIO. Is it likely that the SIO may have taken some amount of spike when liquid was on the 2N chip and that is what has gone.
When I get chance I think it's safe to inject 1v onto that 3VA rail and see what current draw if any.Leave a comment:
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Ok thanks for the clarification, wasn't sure if I was missing something with LDO3. That rail isn't shorted directly to ground however it is possibly being strange as it reads ~75k when I first put my probe on the pin and then takes about 10 seconds where it tops out at ~220k. I swapped the IC to a new one just in case the original one that got hit with liquid went bad however it's the same result.Leave a comment:
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Asus X409DL Rev 2.0
Hey all,
I've got an ASUS laptop (Asus X409DL Rev 2.0) that had a little liquid spill on it however the majority was on the daughter board for the I/O stuff which is connected over a ribbon cable which I have disconnected for now. A small bit of liquid did however get onto what schematics and boardview show is a DC step down IC; a Realtek RT8249CQGW - markings: 2N=. There is no short on the main power rail as I have 19v with the charger plugged in however I have no other power, standby or always on rails anywhere on the board. Looking at the datasheet for this IC I want to sanity...
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