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Thunderbolt 3 Docking with Yoga 370 runs hot

2017-08-24, 7:53 AM

Since Firmware 4.04 the Thunderbolt Docking runs hot.
It smells like slow "burning" plastic. My whole office smells like "burning plastic" after 2-3 hours in use.
I have checked all items and found that the plastic smell comes from Thunderbolt Docking.

After Update to Firmware 4.4 nothing changed. It smells and I'm afraid that it burns some day.


I have changed the Docking to another new one. Flashing firmware to 4.4 and same issue. The new one also smells after 2-3 hours like burning plastic. That's not normal ...


My configuration is:
- Yoga 370 connected with USB-C (only USB-C connected for Data and Power)

- two EIZO Monitors connected on Thunderbolt-3


Anyone have this same problem?


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Re: Thunderbolt 3 Docking with Yoga 370 runs hot

2017-08-28, 3:51 AM



Stop using the Thunderbolt dock immediately and contact Lenovo support to open a ticket with them so this can be investigated.




Aryeh Goretsky


I am a volunteer and neither a Lenovo nor a Microsoft employee.

L380 YogaP72 (20MB-*)P50 (20EN-*)S230u (3347-4HU)T23 (2648-LU7)T42 (2378-R4U)T43p (2678-H7U)T61p (6459-CTO)W510 (4318-CTO)W530 (2441-4R3)W530 (2441-4R3)X100e (3508-CTO)X120e (0596-CTO)X220 (4286-CTO)X250 (20CM-*)Yoga 370

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Re: Thunderbolt 3 Docking with Yoga 370 runs hot

2017-08-28, 8:24 AM



I can only agree with the advice offered by Goretsky; please refrain from using the dockings and report the issue to support.  Please also inform support which AC adapters you were using with the docks; they may want to inspect it / them as well.





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