Hi Anon, yes, certainly they’re around, we have a couple. Most I have seen have very old flex and for that reason it’s prudent to re-wire. We have one that has been beautifully re-wired with modern cable, however it’s the wrong voltage for our application. So, it can and has been done in the past. We just need to know how to get the darn thing apart without breaking it…….

There is one small countersunk screw, but even removing this doesn’t free the tube from the end plug.