PD Controller TPS65994AE EEPROM

[247it]

Hi, I have a ThinkPad E15 G4 I am working on for fun, the PD chip is not talking to the charger, it's stuck at 5v, I have replaced the PD chip three times now (new chips) and always the same result, I have checked for shorts, correct voltages on the PD IC etc - 5v 3v, and the 1.6v on the cc lines, even replaced the USB C port protector IC and the charging port,

The PD IC has a EEPROM connected directly, it's the one in the image attached, I assume the PD chip will not start without some initial commands stored in the EEPROM, the PD IC never shows in device manager, i backed up the content of the chip and attached it, it doesnt look right to me and the bin is only 32k?

Board is NM-E211
SN - PF48263E
MODEL - 21E60050UK

I do have another post here about this laptop, but thought this subject was best posted here, hope thats ok,

Many Thanks,

[SMDFlea]

Thanks,

Main firmware R1SET59W(1.30)
PD Hardware ID = 677ee0c5-bedd-4116-ac65-056912e78a79
Version FFFFFF00

I don`t think the version number should be that.. . Your dump is version 1.0.0.1 ,it has two firmwares in it sequentially. The second one has a few bytes that are different to the first. Why it has two and not one i don`t really know, i`m not sure if it`s supposed to be like that, if there should be only one or it`s corrupted.

Attached is new firmware for you to try, copied from the PD update and edited into your dump

[SMDFlea]

Is the laptop running OK on the battery. If it is and the charge is above 25% you can try to install the PD firmware from the update executable https://download.lenovo.com/pccbbs/m...spd02w-web.exe

Read the pre-conditions first though ! https://download.lenovo.com/pccbbs/m...pd02w-web.html

Manual Update

Precondition: please install R1SET53W(1.24 )BIOS or above version first, otherwise cannot install this firmware.
1.Plug in the AC adapter into the ThinkPad E14 Gen4 Notebook.
2.Double click "r1spd02w_web.exe" to extract to the folder path C:\FW\WIN\PDFW.
3.The system will update type C PDFW after reboot.

Note:

- Do not insert any Type C device (Dock, Dongle ,Type C disk) when updating PDFW.
- Do not close update tool when updating PDFW.
- Please plug the adaptor to the system and keep battery higher than 25% when update PDFW, avoid failure.

*************************************************************
Support Models
ThinkPad E14 Gen 4 (type 21E3, 21E4) Laptops
ThinkPad E15 Gen 4 (type 21E6 21E7) Laptops
ThinkPad R14 Gen 4 type 21E5 PRC

Operating Systems
Windows 10 (21H2 or later)
Windows 11 (21H2 or later)

[247it]

Hi SMDFlea, huge thanks for the reply, yes, the laptop does charge and run fine but only charges at 5v 3 amps,
I tried what you suggested yesterday but will have another go today,
the main bios is the latest available as of yesterday, the PD firmware seems to install in windows, however when the computer restarts the firmware doesn't seem to install, just boots straight into windows,
is the bios supposed to interrupt boot to install the PD firmware similar to the main bios install?

[SMDFlea]

Hi SMDFlea, huge thanks for the reply, yes, the laptop does charge and run fine but only charges at 5v 3 amps,
I tried what you suggested yesterday but will have another go today,
the main bios is the latest available as of yesterday, the PD firmware seems to install in windows, however when the computer restarts the firmware doesn't seem to install, just boots straight into windows,
is the bios supposed to interrupt boot to install the PD firmware similar to the main bios install?

Can you check which version you have now

Precondition: Confirm the system is at BIOS Version R1SET53W(1.24) or above before proceeding.
1. Hold down the Windows logo key and press X to open a menu at the lower-left area of the screen.
2. Select Device Manager from the menu.
3. Double-click Firmware category.
4. Double-click PD Firmware. (If PD Firmware is not found,check the other "Device Firmware" items.)
5. Select the Firmware tab, 'Detail'->'Hardware Ids',677ee0c5-bedd-4116-ac65-056912e78a79.
6. Check Firmware Version, 'REV_xxxx'.

[247it]

Thanks,

Main firmware R1SET59W(1.30)
PD Hardware ID = 677ee0c5-bedd-4116-ac65-056912e78a79
Version FFFFFF00

[SMDFlea]

Thanks,

Main firmware R1SET59W(1.30)
PD Hardware ID = 677ee0c5-bedd-4116-ac65-056912e78a79
Version FFFFFF00

I don`t think the version number should be that.. . Your dump is version 1.0.0.1 ,it has two firmwares in it sequentially. The second one has a few bytes that are different to the first. Why it has two and not one i don`t really know, i`m not sure if it`s supposed to be like that, if there should be only one or it`s corrupted.

Attached is new firmware for you to try, copied from the PD update and edited into your dump

[247it]

SMDFlea you are an absolute genius! I would love to know how you figured that out,

LEGEND!

[SMDFlea]

SMDFlea you are an absolute genius! I would love to know how you figured that out,

LEGEND!

It was a lucky guess

[247it]

Still a Legend should i put a link to the solution in the hardware troubleshooting post i have open? Noob here so not sure

[SMDFlea]

Still a Legend should i put a link to the solution in the hardware troubleshooting post i have open? Noob here so not sure

Yes you can do, and i`ll edit [SOLVED] into the thread title

[mcplslg123]

Yes, when it comes to bios, SMDFlea is a legend. Earlier days,@alaborbe helped a lot of members with bios issues.