Hi folks,
I've got an old Electro-Matic vacuum tube chuck power supply that just smoked a rectifier tube. I have a n.o.s. replacement tube on the way,( got lucky, and found a pair on fleebay). So I thought while I was at it I'd try to find a spare for the other tube in the circut.
Problem is, it's an RCA 8-pin tube, but the identifying number is no longer visible on the tube. I'm hoping perhaps somebody out there might still have one of these units, and be willing to peek inside, and tell me what number is on their tube. I know it's a long shot but stranger things have happened.
Electro-Matic is still in business, but when I called their service dept. I was told that they no longer offered support, or information for their older models, and replacement would be the only help they could (or would) give.
Here is the nameplate info on the unit: Electro-Matic Model M42T Serial #23937
DC 230V AC 460V
500 Watts 50-60 Cycle
I plan to engineer a solid-state replacement for the tubes eventually, but for the short term I need the machine running, so I can buy some time to do that.
I've got an old Electro-Matic vacuum tube chuck power supply that just smoked a rectifier tube. I have a n.o.s. replacement tube on the way,( got lucky, and found a pair on fleebay). So I thought while I was at it I'd try to find a spare for the other tube in the circut.
Problem is, it's an RCA 8-pin tube, but the identifying number is no longer visible on the tube. I'm hoping perhaps somebody out there might still have one of these units, and be willing to peek inside, and tell me what number is on their tube. I know it's a long shot but stranger things have happened.
Electro-Matic is still in business, but when I called their service dept. I was told that they no longer offered support, or information for their older models, and replacement would be the only help they could (or would) give.
Here is the nameplate info on the unit: Electro-Matic Model M42T Serial #23937
DC 230V AC 460V
500 Watts 50-60 Cycle
I plan to engineer a solid-state replacement for the tubes eventually, but for the short term I need the machine running, so I can buy some time to do that.