UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Bellset 50B

Sparks · 25th May 2020, 11:16 am

I determined yesterday that in order to get this bellset off-hook, terminals T19 and T20 have to be shorted together. However, with a correctly wired hook switch in a Tele 713, placing the receiver off hook also shorts together T2 and T6. What purpose does shorting these two terminals serve if shorting T19 and T20 brings the set off-hook ? Also, to hang up, these four terminals are respectively disconnected but T6 shorts to T5. Again, what purpose does this serve ?

Many thanks again.

25th May 2020, 11:16 am	#1
Sparks Heptode Join Date: Oct 2006 Location: Leeds, West Yorkshire, UK. Posts: 598	Bellset 50B - terminals and switch wiring I determined yesterday that in order to get this bellset off-hook, terminals T19 and T20 have to be shorted together. However, with a correctly wired hook switch in a Tele 713, placing the receiver off hook also shorts together T2 and T6. What purpose does shorting these two terminals serve if shorting T19 and T20 brings the set off-hook ? Also, to hang up, these four terminals are respectively disconnected but T6 shorts to T5. Again, what purpose does this serve ? Many thanks again.