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1936 84B hum
PhilcoPhan1936
Jeff W.
******
Posts: 751
Threads: 91
Joined: Nov 2015
City: Jonesboro State, Province, Country: AR
#3

11-24-2018, 11:08 AM
Try checking the rivets to the tube shield bases, make sure the tube shield is making good contact with the base, and the base has good contact with the chassis.
Also, I have a 45C I worked on some time ago, and it had a loud hum 1st time I powered it up. It turned out the common wire to the electrolytic filter caps on the ground side had a break in it. It was a solid wire, and the break was inside the insulation, so it wasn't visible.
As soon as I replaced it with a new wire, I was up and running. Icon_thumbup
Blessings,
Jeff W.
Jonesboro, Arkansas

http://jeffsradios.weebly.com

God loves you as you are, not as you should be, because none of us are as we should be. - Brennan Manning
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Messages In This Thread
1936 84B hum - by Patrick - 11-24-2018, 10:42 AM
RE: 1936 84B hum - by drrenaud - 11-24-2018, 10:56 AM
RE: 1936 84B hum - by PhilcoPhan1936 - 11-24-2018, 11:08 AM
RE: 1936 84B hum - by Radioroslyn - 11-24-2018, 11:25 AM
RE: 1936 84B hum - by Patrick - 11-24-2018, 01:31 PM
RE: 1936 84B hum - by Patrick - 11-24-2018, 02:30 PM
RE: 1936 84B hum - by David - 11-24-2018, 03:44 PM
RE: 1936 84B hum - by tbone - 12-22-2018, 02:57 PM



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