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1.75v drop across that resisitor, equates to a 1.75ma, on other 6bk4 equiped set (the Packard Bell) they want that to be around 1ma, so I am going to assume this should be the same. So now I will poke around the shunt regulator and look for a problem. Not a lot there so I hope it will be easy. Maybe just try a new tube 1st? I guess it could be gassy.
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