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20th Jul 2017, 2:48 pm | #1 |
Octode
Join Date: Nov 2003
Location: Bath, Somerset, UK.
Posts: 1,806
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National TR310 missing power lead
Trying to get this early transistor set going without the original lead. I have ascertained that the two pins separate to the other four (red ink) are the mains input. Two of the other four would be for 12VDC (with an appropriate lead). There must be a link between pins inside the power plug to allow continuity between the power board and main PCB. The three PCB pins e1,e2,e3 carry unregulated 12VDC and go to the main switch. d1,d2,d3 connect to the main pcb and carry-I think- regulated and unregulated 12VDC. If anyone has one of these sets, could they check the mains lead for links please.
Thanks, Neil
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