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Old 10-18-2006, 05:48 PM
beda4
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B+ voltage on zenith k731

Hello to all members, this is my first post and believe me i read all the threads in this forum and still not finding answers to my questions...http://techpreservation.dyndns.org/s...ics/Zenith.htm dont work or cant access this website so i have no schematics to refer to.

I've got questions that some of you guys hopefully might be able to help..first is the plate voltages on zenith k731: Is it the same for all the tubes and what are the exact voltages? I'm concerned about this after reading that over B+ will shorten its life, you see i have done the recap but did not find exact values so i've used a 50, 70, 100 mfd. in place of the original which is 40, 60, 80 mfd. From reading i learned that increasing capacitance would lead to increase in B+ , is this true? . By the way i also did the silicon diode with 100 ohm resistor mod.
My B+ as measured is 124V. is this on the spot?. I've not yet measured the plates voltages for i dont know which pins to touch on each tubes??..

The radio is working and i'm magnetically hooked to its sound, in fact ive forgotten my expensive stereo. So you see i really need to give this one the best that i can offer together with your help..so, should i say HELP please..thank you everybody.
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