1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
40-180 slight hum
morzh
Odobenus rosmarus
*****
Posts: 15,318
Threads: 530
Joined: Oct 2011
City: Jackson, NJ
#7

10-13-2014, 04:16 PM
In my case of Philco 20 (2 weeks ago) it was bad Ground connection in the 27 tube's socket.
Yes, rivets are often culprits.

Also bad grounding of the coil shield cans. Simple twisting motion restores it by breaking the oxide layer that has formed in all those years.
Find
« Next Oldest | Next Newest »


Messages In This Thread
40-180 slight hum - by Edisla - 10-09-2014, 08:32 PM
RE: 40-180 slight hum - by KCMike - 10-09-2014, 08:57 PM
RE: 40-180 slight hum - by Edisla - 10-10-2014, 06:59 PM
RE: 40-180 slight hum - by DeckApe - 10-13-2014, 01:57 PM
RE: 40-180 slight hum - by morzh - 10-13-2014, 02:37 PM
RE: 40-180 slight hum - by mikethedruid - 10-13-2014, 03:02 PM
RE: 40-180 slight hum - by morzh - 10-13-2014, 04:16 PM



Users browsing this thread:
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration