Quote:
Originally Posted by Station X
With R25 measuring 459R and 9.85VDC across it, the calculated combined anode and screen current is around 21mA which is around half what it should be.
Has the replacement speaker simply been wired in place of the output transformer primary? Is the 1400R energising coil measuring correctly?
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The coil measures 3k ohms wired to pins 3&4 of the speaker socket
The output transformer is wired separately to pins 1&2 of the speaker socket