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RontyMonty replied to HP DV7-6015TX BIOS Dump Request

in BIOS Requests ONLY!

01-16-2020, 01:35 AM
Re: HP DV7-6015TX BIOS Dump Request

I tried your files and I am not sure if it was a bad flash or if it didn't work as I was having trouble getting my programmer to properly write to the chip.

After I fixed the programmer I also managed to find another machine with the same BIOS and dump the stock BIOS, write it to the damaged chip and successfully recovered.

Posting here in the off chance anyone needs this .BIN ...

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Last edited by RontyMonty; 01-16-2020, 01:38 AM.
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RontyMonty replied to CH134A Programmer - Can't write to BIOS chip

in General Electronics Technical Discussion

01-16-2020, 01:31 AM
Re: CH134A Programmer - Can't write to BIOS chip

That worked a treat and makes a lot of sense really. That being said, I am surprised that I've never seen that mentioned elsewhere, at least not that I can see. There's a lot of videos of people doing similar BIOS recovery onboard

Off board recovery went well and the machine is now fixed and working again, thanks for the suggestion....

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RontyMonty replied to HP DV7-6015TX BIOS Dump Request

in BIOS Requests ONLY!

01-14-2020, 05:03 AM
Re: HP DV7-6015TX BIOS Dump Request

Thought I had it writing properly, seems like I'm wrong though.

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Last edited by RontyMonty; 01-14-2020, 05:09 AM.
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RontyMonty started a topic CH134A Programmer - Can't write to BIOS chip

in General Electronics Technical Discussion

01-13-2020, 12:41 AM
CH134A Programmer - Can't write to BIOS chip

Hi all, unfortunately I haven't been able to find a solution on this for myself. I'm no expert in programming these ICs, so I'm hoping I've missed something embarrassingly obvious!

After screwing up a BIOS setting on an old laptop rendering it unrecoverable I bought a cheap CH134A programmer & test clip. I'm sure everyone knows the ubiquitous sub $5 listing on their favorite import site.

The chip I am trying to write is an Eon EN25F32

I can dump the BIOS fine as far as I know, but I can't seem to erase or write to the chip. AS Programmer...

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RontyMonty replied to HP DV7-6015TX BIOS Dump Request

in BIOS Requests ONLY!

01-08-2020, 02:53 AM
Re: HP DV7-6015TX BIOS Dump Request

Thank you for that, I'll try it soon. As of now I am having trouble getting my programmer to write to the chip so I'll have to solve that problem first!

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RontyMonty replied to HP DV7-6015TX BIOS Dump Request

in BIOS Requests ONLY!

01-06-2020, 10:27 PM
Re: HP DV7-6015TX BIOS Dump Request

I believe the MB code is HPMH-40GAB6600-D3D3, attached BIOS dump too.

Thanks...

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RontyMonty started a topic HP DV7-6015TX BIOS Dump Request

in BIOS Requests ONLY!

01-06-2020, 03:19 AM
HP DV7-6015TX BIOS Dump Request

Had an unlocked BIOS on this machine previously and accidentally disabled the GPU which prevents it from booting

I have a verified dump of the current, broken BIOS, unfortunately didn't think to make a dump of the working configuration.

I don't mind the stock BIOS or unlocked. Either works for me! I can supply the "bricked" dump if it's faster/easier to correct my mistake than it is to find the original BIOS file.

Thank you!

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RontyMonty replied to Killed a custom HP WLAN chipset - now how to fix it!

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-18-2019, 11:32 PM
Re: Killed a custom HP WLAN chipset - now how to fix it!

How can I check for the presence of a good clock signal?

I don't know what pin to look for CLK on but from what I understand with PCIe it should be +3.3v @ 32.768 kHz ?

I don't have an oscilloscope to check for presence of signal....

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RontyMonty replied to Killed a custom HP WLAN chipset - now how to fix it!

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-18-2019, 03:07 AM
Re: Killed a custom HP WLAN chipset - now how to fix it!

You are correct, the cable was reversed.

Motherboard has 3.3v power to the 4x power pins but not all of the signal wires have 3.3v, only some. Of course with no schematic I have no idea which pins should be TX+/RX+

The WLAN card was replaced, I bought a new one and it did not fix the problem.

I checked the flex cable, no shorts between pins and all pins have continuity/0 ohms resistance

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RontyMonty replied to Killed a custom HP WLAN chipset - now how to fix it!

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-17-2019, 11:15 PM
Re: Killed a custom HP WLAN chipset - now how to fix it!

Did you want a pic of the other side of the WLAN card, the other side of the Mobo or both?...

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RontyMonty replied to Killed a custom HP WLAN chipset - now how to fix it!

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-17-2019, 10:56 PM
Re: Killed a custom HP WLAN chipset - now how to fix it!

Yeah, wish I could get my hands on one, it's really a pain that these things aren't somewhat easily available.

Despite the odd shape the flex can be installed with the daughter board end in the motherboard LIF connector. I didn't even think to check I'd inserted it right as generally these shaped cables can only physically align in one direction. Lesson learned!

Not so much upside down as backwards, attached image shows the incorrect orientation that caused the fault. DB end is in Motherboard,...

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Last edited by RontyMonty; 12-17-2019, 10:57 PM.
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RontyMonty started a topic Killed a custom HP WLAN chipset - now how to fix it!

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-17-2019, 03:25 AM
Killed a custom HP WLAN chipset - now how to fix it!

HP Spectre 13-V002TU (Board BSE30 LA-D401P) - Inserted cable backwards and killed some aspect of the PCI Bus

During reassembly I accidentally switched around a flat flex connector that connects the WLAN/Bluetooth Module daughter board to the motherboard, It's labeled so you don't do that but I can't read. Unfortunately the cable is not pinned symmetrically so the electrons fell out somewhere. Realised after attempting to switch it on and it wouldn't boot. Put the cable back the right way and the machine boots but I've lost WiFi functionality.

I'd hoped replacement...

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Last edited by RontyMonty; 12-17-2019, 03:29 AM.
RontyMonty replied to New Members - please post your introductions here

in Announcements & Related News

12-17-2019, 01:35 AM
Re: New Members - please post your introductions here

Hey team,

Given my ability to break things I've come forth to learn how to fix them and hopefully help others along the way. Background in engineering (mechanical), aviation and electronics.

From New Zealand so wee ways south of the Equator.

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