Finally got back to this and removed the faulty cap. ESR is 3.7 ohm. ;-)

It's a 1k 10v type

Closest I have in low ESR is 16v - which will obviously be higher ESR than
a 10v type.

Try it and see - or wait till I can buy the correct ones?

--
*Women like silent men; they think they're listening.

Dave Plowman London SW
To e-mail, change noise into sound.