"You don't belong here" printed on the overlay- so thats why its fuched.
Proudly says RoHS on the casing, rustling noises at random, so fuched by
RoHS probably, certainly PbF solder. How to get under the scrappy looking
black "conformal" coating. Not epoxy coating as methylated spirit softened
this plasticky coating enough to scrape off with a wooden cocktail stick on
the Main chip Spin FV-1 , nice to see datasheet for this on their site , and
also 5532. Seems suspect solder on a pin of the main chip, from twizzle
sticking. But what is the cleanest way to get the coating off - it hardly
looks pretty as it is, am concerned about meths migrating capilliary fashion
along the pins, to deal with the underlying pbfitis. Chemical reaction
between this black stuff and solder?

wire brush in Dremmel then scalpel between pins and then needle, hooked it
off quite cleanly.

not vibrations but good verbrations , whatever that is
What an overpriced heap of junk. On pulling off this rubbery plastic film
one of the SM caps came off with it. The film is not stuck to the components
with any force, a needle under it and it lifts quite easily off pcb etc
except where its lodged between IC pins. The SM C&R near the main chip that
I had wire brushed were firm enough. Poor PbF solder under pin 22 was the
main problem but what else lurks under the rest of the black stuff I've not
touched?
Standard die cast box with no bumpons under to stop it sliding, no separate
battery housing so you have to fully open up to replace battery . The power
socket loose and no 1/2 inch 25 TPI bush nut available this side of the
pond, to rob off something, to replace it, maker had hand filed out hole in
the box to receive the socket (because of flats). Looks as though I'll have
to continue the spirit of bodge, with hotmelt glue inside to keep this
socket in place.