mferna14
Badcaps Legend
Last Activity: Yesterday, 06:23 PM
Joined: 06-30-2018
Location: Brampton
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@LBTT1121 dear., all worked, now atleast I see the ON/OFF LED lit up, there is still a problem with the board. I will trouble shoot later. Thank you very much -
Thanks @LBTT1121., I have uploaded both the BIOS Bin Files (64MB & 128MB)... I am getting all the required voltages, even 3v on the On/Off switch, but still does not turn ON. Kindly clean....Leave a comment:
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Hi Dear friends., working on this Dell Latitude 5500. The problem was dead. I replaced the shorted MOSFET & now no short at all. But when I press the power button, does not turn on. I was checking the Latitude 5500 threads & most of them are with the 256MB BIOS, my board contains 2 BIOS chip 64MB(UC5) & 128MB(UC6) . & upon reading the Main Bin files are in the 128MB & the 64MB contains the password. So I have only uploaded the 128MB UC6. Can someone pls. clean this BIN File. Thanks in advance.
Dell Latitude 5500
Serial # JM042R2
Motherboard # EDC50 LA-G901P...Leave a comment:
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Dear Friends., can someone please help clean this BIOS Bin file. The problem is that it was booting into Windows 11 without any probems & with one update, all got corrupted & thereafter did not load or boot into Windows at all. The windows ring start & all of a sudden it either gives a BLUE Screen or restarts again after few seconds. I tried with known good SSD Windows 11, no luck. Thanks in advance
Lenovo Legion 5 15ARH7H
Serial # PF45D2NW
Motherboard # NM-E471 Rev: 2.0...Leave a comment:
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Never mind about the Bin Files, I figured out what to do... Thanks all....Leave a comment:
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Hi Dear friends., working on this old Dell Laptop. It's just stuck on the Dell Logo screen. Does not boot at all & not going in to setup. Kindly if someone can clean this BIOS. I am uploading both BIOS Bin File (32MB & 64Mb).
Dell Laptop MODEL: Latitude 7450
Serial # GSNRR72
Motherboard # LA-A961P Rev: 1.0(A00) 2014-10-16...Leave a comment:
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These Dell Model LA-G891P have problems with audio. My Problem is same like @Zibbo post # 1 ., did anyone find a permanent solution for this defective. Re-installed Win 11 & in the start audio is 100% perfect, can hear songs, play all audio on YT, no errors at all. The moment the laptop is shut down & kept away for the night, the next morning I see X on the speaker icon. On boot up too in the start, it show "NO MEDIA DEVICE Present". If anyone came across this problme & can share a solution for this fault. I even replace the audio chip & audio Jack, no luck. Thanks in...Leave a comment:
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Dear friends, I am having a problem with audio with this Dell Latitude model 5400. At first I hear the audio in good working condition. The next day I turn on there is an X on the speaker icon. This has been happening for several days, I restore the laptop twice, replaced SSD & checked all periherals, all good & no shorts near teh audio chip. Hopefully the complete BIOS cleanup might clear this problem. I have uploaed the original BIOS Bin file. Can someone do a cleanup for me please.
DELL Model: LATITUDE 5400
S/n: 29LNK13
Motherboard # LA-G891P REV:1.0...Leave a comment:
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[QUOTE=Zibbo;n100211]Customer says they were playing music on internal speakers and it suddenly stopped. Windows says no audio device detected.
Here is what I have done so far: I have inspected the motherboard for burnt parts or liquid damage, I have checked for shorts to ground on all supply pins, I have changed the audio IC, I have reflashed the bios with a 100% working dump, I have enabled the audio device in bios.
Dear if you have the schematics LA-G891P., kindly share!!! Thanks buddyLeave a comment:
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I checked this video yesterday before posting this thread., there nothing he has repaired or checked any voltages, he just replaced the battery & other software things which I did apply but no luck....Leave a comment:
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Resistance between pins SRN & SRP (pins 19 & 20) on the charger IC without the Battery connected is 20ohms., Is ths correct value???? What's next???Leave a comment:
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Thanks mon2 for the rescue. I will do the measurements tomorrow & inform you. In the meantime, i.e this afternoon, I took out a good BQ25700A from a Lenovo motherboard NM-B741, this board uses the same BQ25700A chip for charging the battery, no chance, still the same. I will check the resistance between pins SRN & SRP (pins 19 & 20), but I sure it will be less than 10ohms as there is a current resistor in parallel. I checked this resistor before & it was fine, but will surely confirm it tomorrow. ThanksLast edited by mferna14; 11-23-2025, 08:19 PM.Leave a comment:
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Samsung NP750XDA not charging battery
Dear gentlemen., today working on a Samsung Galaxy NP750XDA Laptop (NB3586-NB3587_PCBN_MB_V5), not charging battery. The laptop came with a dead battery & upon testing the battery Ouput coil getting around 6v, assuming that the battery circuit is ok & only the battery has to be replaced. I ordered a new battery, received & installed it but still same, NOT CHARGING. In the start, on the battery + pin I get 17v which is perfect for a 15.4V battery & then the volts drops down to 6v approx & does not charge or work on the battery & the charge LED comes on & then off. I... -
This is a BIOS post, kindly post in a separate trouble shooting thread, I might be able to help you out there. Thanks dear for your understanding....Leave a comment:
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Thanks @ Markus1741 , appreciate your help. All good, yet to test the laptop by turning it off & on many times. Looks like the cleanup has cleared the problem....Leave a comment:
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Good morning friends., working on this Lenovo ThinkPad P14S., the problem with the laptop is that it freezes all of a sudden & then no display for a longest time. Sometime I get display & at times it is totally blanks. All the required voltages are present & taking around 20V 0.62 milli amps & when no display it is stuck on this amps. Hopefully a full BIOS cleanup might rectify the problem. Can someone do this for me., thanks in advance.
Lenove ThinkPad P14s 20S5-S00L00
Serial # PF-1SKM98
Motherboard Part #: GT4A0/GT5A1/GP4A0/GP5A1/GT4A2 NM-C931 Rev: 1.0...Leave a comment:
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Dear Buddies., I did a sound & steady research on these chips CD3217B12 replacement on this logic board. I had to repair another motherboard like this 820-01949. One of the CD3217B12 (Small Dot) location U3100_X was bursted but the other U3100_T looked fine. Since I had the time I replaced both new CD3217B12 (BIG Dot). Upon testing the logic board got stuck on 5V. I noticed that this board uses all 4 CD3215B12 (Small Dot). I had some old CD3215B12 (small dot) lying around. So I re-balled 2 chips & soldered back in the location U3100_X & U3100_T. Guess what, all worked fine, 20v perfect...Leave a comment:
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@hoaca388 Dear., thank you very much, worked like charm, you are one of the best!!!!...Leave a comment:
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Thanks SMDFlea for putting the post in the right place. Ok Dears I have also attached the Original file from the ACER web Site & also found out the "version 1.04" & BID "ZAA" from the original BIOS., But I do not know how to edit the download BIOS from ACER. If someone can kindly help. Thanks...Leave a comment:
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Dear friends., working on this ACER Aspire F5-573T-56UC DAZAAMB16E0 Rev:E . All the working voltages are present & it turns on & take the load of few amperes but still no display. I think the BIOS cleanup will rectify this problem. I could not find this Serial # or SNID on the ACER web site. The board has a very common part #. Thanks in advance. Admin kindly move this post to the BIOS Request section., just accidentally got it here, my mistake, apologies !!!
ACER Aspire F5-573T-56UC
S. # NXGDBAA0036281A5B97600
SNID: 62810796176
MB Board P/N: DAZAAMB16E0 Rev:E...Last edited by mferna14; 09-23-2025, 04:49 PM.Leave a comment:
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