Hi Guys,
Thanks for looking into this for me.
I’ve replaced the 3 (not 2) screws. All of the 10 screws had threadlock already on them, apart from 1 they were in two lengths, which interestingly the two shorter ones were blue on the threads, while the 7 slightly longer 3-3.3mm were reddish purple in colour. To be honest looked more red, maybe maroon to me. Whereas the purple Loctite 222 I bought was distinctly purple (when wet). Anyway three people noticed the vibe off both iPod touch, which we both still have, and although the batteries need replacing, both still work. And the 13” MacBook Pro. Were in the UK, so have Live, Neutral & Earth. My property is rented from a Housing Association, so upto electrical regulations (EICR), with resettable fuses, and earth leakage detection, on the whole flat.
My partners house is older, it was re wired 30 years ago. I have replaced some of the old fuse wire fuses with old resettable fuses which fit the old two prong fuse sockets on the distribution board. But no RCCD.
So there’s no problem with either supply, and all 3 appliances have ‘vibed’ us in both premises!
Both our 6th gen iPad minis don’t do this.
Thanks for answering my thread lock questions, which I hadn’t looked at the screws, when I asked, but found interesting 9 out of 10 appeared used with thread lock already on.
Most of the screws already in the MacBook were loose, and non had thread lock on.
Now all 10 do and are tight (lightly)
Thanks to everyone who posted