Hi all,
Last time I was at the council depot I picked up a Davis Thyractor ballast. Now my experience of these has been poor in the past. I must of had about 10 of these in my collection at various times and all I get is a red flash from the tube then nothing. So you can imagine my disappointment when this one did the same.....bugger. So whilst I was putting the other stuff away on the shelf I spotted one at the back of my collection. I haven't dated it so I wasn't too sure if it would work. I wired it up and hey it works. Has anyone noticed a high failure rate with these?
Regards,
AndrewI have got a GEC Z9533 internally geared 35w SOX lantern, which was fitted with one of these Davis Thyractor ballast's.
It too was dead, it didn't even flash red, just did nothing, even with a different SOX tube (both the lamps I tried were working fine), I also tried it on the 55w tap, and still nothing.
These don't seem to be very reliable, I guess the internal ignitor has failed, maybe the heat of the ballast coil is what kills them?
The replacement gear will be a Parmar 35/55w SOX ballast, and an SX26 ignitor.