Parish wrote:

Velvet wrote:

John wrote:

Mine had springy contacts in each lampholder to make contact with the
conducting bars. Dust and cheap manufacturing had caused poor
contacts in
each holder. A strip and clean sorted it.


Ah, that's a point. I can get the entire track down, not sure how far
the individual units will strip, but I'll have a look at that tomorrow.


If they won't strip down far enough you could try blasting them with an
electronic cleaning solvent aerosol - removes dirt, grease, and oxide
film, great stuff. Not sure where you would get it locally though, I
used to buy it from work who got it from RS, Farnell, CPC, or similar.


That's another good idea (well done uk.diy!) - the chances are that one
of my family have such a thing

Velvet