06-04-2013, 04:36 PM
Just picked one of these up and will rebuild soon. I have many 8417's and 7868's that i need to test. The chart doesn't list these. Are there other #'s for these tubes? Has anyone used this tester for these tubes?
Thanks in advance.........curley
06-04-2013, 07:41 PM
There really isn't anything like a 8417, pretty high transcon 7AC pinout tubes.
A 6550 or KT88 setting will let you "test" to see if it works, maybe make a pile.
(then compare all your 8417 to "make" a setting)
The 7868 is basically the same as an 7591 with different basing, that may help.
06-04-2013, 08:03 PM
Thank you. That keeps me moving forward.
06-05-2013, 10:29 AM
If it helps,my B&K 707 chart says (6 29 52 for a 6550) and (6 29 54 for a 8417) and (6 29 63 for a 6L6)
06-05-2013, 10:14 PM
You've made my day. Now, if I can find a solution for the 7868, I'll be a happy camper.........Thanks again
06-06-2013, 08:06 AM
I am not sure this will help,but the 707 settings are:
6 42 27 4 5 2 6
fil,socket,sensitivity selector A b c d
shows shorts 1-7
06-06-2013, 11:20 PM
Thanks again. I will try these setting after rebuilding the tester.
06-09-2013, 02:06 AM
The 707 socket #'s don't translate to the B&K Dyna Quik 500. Has anyone tested 7868's on one of these? Thanks to all of you for your help.