B&K 747 tester fault
Hi all,
I was recently using my tester when the heater on a tube being tested went cold. Turns out now that NONE of the heaters of any of the valves I test light up. I looked for a wiring fault, but I have a horrible suspicion my tranny is open.
Has anyone seen this and know what it is?
All help appreciated.
Cheers,
Adam
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