07-23-2011, 05:22 PM
My last post evaporated somehow. Take a look at the 48-360 Riders. it's pretty much the same set. You can lose the battery terminal and it's troublesome interface switch pretty easily. If there is any good portion of the on-off switch, you can use to connect one leg of the line cord to the plate of the 117Z3, and the other side to the B- and be done with it. Everything else should fall into place soon.
You will make sure that the least (end)part of the B+ is about 8.5 volts (and measure this with about 150 ohms or so load. just 2 watts and use ohm's law to cobble together a suitable kludge.) with the remaining tubes NOT in the set. If all is well, power down, replace the tubes, remove the kludge , and let us know what is happening. You will not harm anything if you put another 100 ohms in series to tame the filament voltage further. Object here is to not burn out the filaments whilst getting other things in order.
You will make sure that the least (end)part of the B+ is about 8.5 volts (and measure this with about 150 ohms or so load. just 2 watts and use ohm's law to cobble together a suitable kludge.) with the remaining tubes NOT in the set. If all is well, power down, replace the tubes, remove the kludge , and let us know what is happening. You will not harm anything if you put another 100 ohms in series to tame the filament voltage further. Object here is to not burn out the filaments whilst getting other things in order.
