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- - Need Info on 6BK4 Tube (http://www.videokarma.org/showthread.php?t=45062)

vintagecollect

08-11-2005 03:52 PM

Need Info on 6BK4 Tube

I have a 6BK4 Tube used for HV regulator. What symtoms does tube give when bad?? Is there a differance between a 6BK4A/B tube & a 6BK4C tube?? My tube tester doesn't test these, what tube checker does???

:dunno:

holmesuser01

08-11-2005 04:55 PM

Dark smeary picture. Blooms easily. Width bounces allover the place. Look at your tube. Is it dark brown in color on the glass?

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