Re: Restore a Beau Decca
Thanks PJL and Techman. As we've done lots of reading over the last few days I thought it might make things clearer if I did them all again and annotated them on a circuit diagram- see attached for what I found.
Taking a voltage reading across R47 and R48 gave:
R47 (48.6 ohms measured) = 0.14V
R48 (42.4 ohms measured) = 0.41V
The readings are slightly different from those I took previously of 0.4V and 1.0v respectively.
When I swap the valves
R47 (48.6 ohms measured) = 0.91V
R48 (42.4 ohms measured) = 0.21V
Unfortunately it does look like the low current follows the valve.
The only difference in the circuit as far as I know is the R50 is definitely o/c as wire is cut (may have been o/c anyway before- certainly is now).
Just wondering if we should go ahead with techmans suggestion and take out the limiter- is there any chance that the valve difference could just be due to the long period of no use/ low voltage use?
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