What size is the original capacitor? The smallest 220uF I found are 5mm in diameter.
Hmmm, you're right about the spring... Now I'm in doubt whether I should dismantle my D3 again to fix this. It seems to be working. I've added a...
A new part is added and I made some edits. Have fun...
Thank you for your encouragements. More steps are added in the original post. So in case you're interested: please scroll back.
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