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- Re: Blown Fuse error code Q7P1BF-B2MCIN-MFPX0J-C6E803

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02-24-2024 11:47 AM - edited 02-24-2024 12:04 PM
There are zero ohm SMD resistors in the laptop/battery charging power circuit that act as fuses.
If the blown fuse error message was Blown Fuse (42) it would mean that the internal fuse of the battery was blown.
Are you still able to boot and log into Windows?
I will see if I can get a translation of the error code and return to your thread.
I had no success. I would need the SKU from the MS system information dialogue window in Windows.
The product name and product number that you provided were only the generic ones from the model series your laptop is part of.
Try it at the web document at the hyperlink below.
https://support.hp.com/us-en/contact/diag
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02-24-2024 12:27 PM
Thanks for your reply. I can still boot both with and with out the battery in. My laptop is: HP Laptop 15-dy2024nr (4X6F6UA), SN: 5CD212B9K3.
I spilt some wine on it. It worked until I turned it off and it would not restart. I took the laptop apart and did a through cleaning. It looks pretty good except the model with the USB port. It booted but the blown fuse bad battery error. I bought a new battery but got the blown fuse error. I reinstalled the drivers, and a computer hard reset.
My question now is, if I put in a new battery will I blow out that one's fuse too? The HD Dianostic tools say everything passes e, cept "the blown fuse".
02-24-2024 12:37 PM - edited 02-24-2024 12:41 PM
Can you rephrase the following statement? It isn't really clear what on you are meaning to say.
"It looks pretty good except the model with the USB port"
" I bought a new battery but got the blown fuse error." That means the issue is likely to be on the laptop's system board and part of the charging system.
Does your laptop use a USB Type-C power adapter?
The specifications show it as having an 1 AC smart pin, which means the barrel type power adapter can be used.
You may be able to charge it with the power adapter it was delivered with.
I am a volunteer forum member. If my suggestion helped you solve your issue, help others by marking that post as the accepted solution. Say thanks by clicking on the Yes button next to the "was this reply helpful?"
02-24-2024 03:16 PM
When I spilled wine on the keyboard I cleaned it and the laptop continued to work. I turned off the laptop and the next day it would not boot. I removed the back and did a thorough cleaning. There was no apparent wetness or wine residue, “it looked pretty good”. Except, the separate circuit board (“module”), where the 2 USB ports are mounted, had a little gunk on it which I cleaned. The power connector, a 1 AC smart pin barrel type power adapter, is a separate component and looked fine. I removed all parts and thoroughly cleaned them, both sides of the various circuit boards, and disconnected and cleaned all the ribbons and their connectors. The laptop restarted but with a battery error. I did a hard reset, uninstalled and reinstalled all relevant device drivers. Installed and ran the HP PC Hardware Diagnostics.
The battery Failed the HP PC Hardware Diagnostics. The Power Adapter Passed and all other hardware components passed the HP PC Hardware Diagnostics.
I replaced the battery with a new one and this battery Failed “blown Fuse” the HP PC Hardware Diagnostics and will not charge above the 54% that it came with.
I ordered new battery but my question is, is there something that is continuing to blow the battery fuse? How can I test? Or was it likely a bad “new” battery.
02-25-2024 09:27 AM
What did you use to clean the laptop with?
Was there not a number in parentheses behind the "Blown Fuse" error?
Does the laptop charge the battery when it is turned off?
Not charging about the 54% it was delivered with indicates a failure in the charging circuit. It could be the battery management chip, a mosfet, a zero ohm resistor (fuse) or a capacitor.
The possibility does still exist that the new battery has a fault in its smart circuitry.
I would request an RMA on that one.
If after replacing it you have the same "Blown Fuse" error, you now know for certain tat there is a failed component in the laptop's charging circuit.
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