DIYbanter - best cassette round/flat drive belts source UK?

In message , JH
writes
Where can I get the best selection of these in the UK please?
SeMe, Willowvale, CPC, Wizard Electronics. Google is your friend for
these names. Visit your local WH Smiths and pick up a copy of
Television, you should be able to find lots of people in there willing
to sell you belts.

I am repairing some old kit.
I specifically need a 5 mm flat by 80mm dia belt for a B&O cassette player.
Are your sure it's 80mm diameter? They stretch with time and lose their
elasticity. An old bodge is to put it into a cup you no longer want and
pour boiling water onto it, the belt will shrink a little and probably
give you a better idea of its original size. Alternatively, find your
local B&O service centre and ask nicely if they can order one for you.

J.

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Clint Sharp