Posts: 933
Threads: 140
Joined: Mar 2015
City: Lansdale
State, Province, Country: PA
Picture of Part
[Image: http://i292.photobucket.com/albums/mm38/...xdqbs0.jpg]
According to schematic the center contact on this pot should go to ground. But it never did. Did philco goof? this could never work as tone control it Part # 67 Tone control ( Audio base)
Thanks
Skip...
Posts: 7,297
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
Measure the wiper to gnd with an ohm meter. It may have an internal gnd connection. If not gnd it.
Terry
Posts: 16,483
Threads: 573
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
Yes, it is usually connected without being soldered.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Posts: 933
Threads: 140
Joined: Mar 2015
City: Lansdale
State, Province, Country: PA
Yup center is grounded.. Thanks never seen a pot that the center was grounded internal.
Thanks
Skip...
Posts: 16,483
Threads: 573
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
Sometimes it is a ring riveted to the middle pin (or soldered) that goes around the shaft so when mounted it provides the grounding.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
