16-10-2016, 02:50 PM
I have all the base connections in the valve data book thanks. The problem was tracing which pin on the 9-pin socket went to which electrode. Found them eventually, but it still does not work properly. For a start, the anode volatges are way out. Yesterday, I had an EF91 anode glowing white hot. When I put the meter on, the HT was in excess of 350 Volts on the 250V setting. I can get over that temporarily by going down two stops. But now, I find the one volt on the test switch is missing when I push it over. Possibly switch contacts, but bit difficult to get at.
Bob
Bob
