DD1 Fan Running, Calibration Flash, Odd wheel behaviour

Hi.

My DD1 is 54 weeks old and has just started exhibiting strange behaviour. Well, it's become useless.

9 times out of 10 you turn it on and the fan goes to max until you turn it off. During this time it's unusable, you can turn the wheel as many times as you like, there are no stops, it just turns and turns.

I've tried flashing the firmware and get the same result; unusable wheel. The DD1 stem spins to an odd angle and locks itself there and you can't turn it, either with a wheel or without. I've updated today to v691 and the same result. It flashes 'CAL' but you can't calibrate it - the stem just does not move. If you get it running without the fan on the 1 time out of 10, you can turn the wheel but it feels like it's resisting you, and then just pulls the wheel out of your hands and randomly spins it.

So, I think I know what this means, but if anyone has any suggestions, I am all ears.

Thanks for your help.

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