The Lord alerted my mind to the presence of this EVIL article by Harry
Bloomfield, and I thusly replied:

Velvet wrote on Monday (09/02/2004) :
Put up two sets of these a couple of years ago. One set is now
behaving oddly. They're both operated from the same switch, but I'm
not exactly sure how they're wired together, I didn't do that bit.

They're 12v systems with a transformer integral to the mounting point
on the ceiling for the track - so not recessed at all. 4x35w halogen
lights on the track, one transformer per track.

Many of these LV units suffer the same problem, high current causing
burnt and poor connections.

As the voltage goes down, the quantity of current has to rise to make
up for it to achieve the same wattage. If all lights are out on a
track, then look at the connections between the "transformer" and the
track. If it unplugs from the track check for signs of burning and
blackening.

Less likely, but still worth checking are the mains connections to the
"transformer".

Failing either of the above, there could be a problem inside the
"transformer".

Why is "transformer" in quote marks?

--
The Reverend Parson Peter Parsnip
Smiting Sinful Usenet Users Since 1874

"A ******* shall not enter into the congregation of the Lord; even to his
tenth generation shall he not enter into the congregation of the Lord."
- Deuteronomy 23:2