Re: X270 (20K5-S27L00) troubleshooting

Thanks for inspecting the upload and the constructive suggestions.

I can confirm that all 3 batteries were removed for the duration of my unsuccessful efforts and that the anti tamper switch was indeed taped down.

I'm away from workshop facilities for a few days, but will look into MEC firmware and report back on my return. I have access to a JTAG as they're used to program CPLDs at work.

Hi.

Can anyone recommend a next step here please?

Bought an X270 (20K5-S27L00) which completed POST but came supervisor password locked. My attempts to make the machine useable have not gone to plan.

1.Desoldered the 25Q128FVSQ BIOS and dumped a copy using a CH341, SOIC to DIP adaptor and Asprogrammer.
The CH341A is version 1.7 (selectable voltage) and I used a reasonable SOIC to DIP adaptor, not one of those high resistance leads with a clothes peg on the end...

2.Autopatched the BIOS and refitted to the motherboard.
On...

Re: New Members - please post your introductions here

Hi

Component level repair engineer from the UK.

Started as a brown goods service engineer mostly repairing TV, video and audio.

Then moved into IT hardware and software support when AV equipment became cheap and largely unsupported by the people that manufactured it.

A few other things in between and I'm now employed by a UK university repairing test equipment, constructing rigs for research and providing student support.

Thank you for providing this valuable...