In article ,
Roger Mills wrote:
On 25/11/2018 09:47, Brian Gaff wrote:
No you cannot get into those ballasts. Its a nasty trick so you have to
replace them.
Now I'm intrigued. Are the tubes merely in series with only one set of
heaters active?
Brian


I can't quite work it out. There are 6 wires coming out of the ballast.
Two go to the bottom socket of the left tube, and two to the bottom
right. The other two go one each to the top of the tubes. Finally
there's a cross-connections between the other two pins on the top
sockets. Whether this constitutes being wired in series, I'm not sure.

I've got a similar device at my holiday flat, and ISTR that when one
tube failed, neither would light.

They can be odd, these small tubes. Have a battery one where the pins are
wired in parallel. So no heater.

--
*If a thing is worth doing, wouldn't it have been done already?

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