I have just had the Rifa EMI/Safety capacitor changed, as these are a known failure point on older power units.. The last few photos show the cracked open capacitor and the replacement fitted.
The replacement capacitor is a European manufactured part of high quality. The Handpiece all works correctly and is super smooth and quiet. The power lead is in good order with both plug ends being sound and stable.
The collet chuck is 2.35mm, running nice and true and not worn out. Any questions, please feel free to ask.