Thank you for this, but after flashing the bios & verifying the laptop is no longer initialising charging at 20v, rather its stuck at 5v. Prior to flashing the BIOS, the PD controller was negotiating and charging at 20v.
Please can you check the 1MB winbond 25Q80 dump of the TBT rom to see if its corrupted....
irfan karatela
Member
Last Activity: 05-24-2025, 11:14 AM
Joined: 10-07-2024
Location: leicester
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full name : hp envy x360 2-in-1 Laptop
model : 15-fe0013dx
motherboard model : JPR50 LA-M794P REV 1.0
serial : CND34208GC
ProdID : 7H9Y2UA#ABALeave a comment:
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please help fix bios for JPR50 LA-M794P REV 1.0 hp envy x360 15-fe******
please help fix bios for JPR50 LA-M794P REV 1.0 2023-03-03 hp envy x360 15-fe0013dx
power on fan spins for a few seconds, has no display
thanks... -
A2141 cd3217b12
I have a MacBook A2141 that needs 2 of the 4 cd3217b12 ics replacing.
I read on the wiki that I need to source these from a donor, and I cant use new ones.
I also found the bin for the tbt rom on this forum.
As I don't have a donor board, can I use new cd3217b12 and program the tbt rom from the bin ?
If so how would that help? My understanding is that the current tbt rom on the board I'm working on is fine, so I'll just be programming it again?
Thanks... -
Neo Programmer worked perfectly for this IC, Thanks
Unfortunately that wasn't the issue with the laptop i'm currently working onLeave a comment:
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Programming XMC 25QH256C with a CH341a programmer
I'm able to read and write the chip by selecting a winbond IC of the same size, but when verifying it fails at around 25 percent.
I've modded the ch341a to 3.3v.
Can I update the database to include the XMC 25QH256C? -
Casper EXCALİBUR g900 DANLCCMBCDO
I'm looking for for the schematics and boardview for the Casper EXCALİBUR g900 DANLCCMBCDO
Thanks -
MOSFET no voltage at gate Quanta G7HA DAG7HAMB8EO
I'm working on a HP Pavilion Laptop Model 15-eh1508sa that is missing 19v. I've looked at the schematics and want to know what conditions the ISL9238C checks before it enables the gate for MOSFETs PQ8200 and PQ8201,
I havent found any shorts on the board.
I get 19v at +PRWSRC but around 1.7v at the Drain of PQ8201(+vin)
On Page 82 of the attachment. [COLOR=#d35400][B]Link to schematic[/B][/COLOR] - [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-reques... -
MOSFET PURPOSE
I'm looking at the PS5 motherboard, and have come across 2 mosfets, I want to understand the purpose of the 2nd mosfet as the source is connected to GND and the drain is connected to 5v. wouldn't this short the 5v rail once the 2nd mosfets gate is enabled?
Thanks... -
Hello,
I repair gaming consoles and laptops, but rather than just changing parts, I want to learn why that part needs changing. I have learnt a lot from the posts but my knowledge is minimal.
I enjoy what I do and have a passion for it.
Max
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