1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
38-116 Bass?
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#4

03-11-2022, 11:30 PM
There are two resistors and two capacitors to check in the bass control circuit. The parts are the same, but the part numbers differ between Code 121 and Code 125.

70K resistor - part (103), code 121 - part (89), code 125
2 meg resistor - part (104), code 121 - part (95), code 125
Two .008 uF capacitors - parts (105) & (106), code 121 - parts (91) & (92), code 125

Make sure these are properly connected. Make sure the bass tone switch is actually functioning as designed. The wiper arm of the bass tone switch should be connected to chassis ground.
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
38-116 Bass? - by madsowry - 03-11-2022, 05:14 PM
RE: 38-116 Bass? - by Radioroslyn - 03-11-2022, 07:48 PM
RE: 38-116 Bass? - by madsowry - 03-11-2022, 10:32 PM
RE: 38-116 Bass? - by Ron Ramirez - 03-11-2022, 11:30 PM
RE: 38-116 Bass? - by madsowry - 03-12-2022, 03:09 PM
RE: 38-116 Bass? - by Mondial - 03-12-2022, 03:45 PM
RE: 38-116 Bass? - by madsowry - 03-12-2022, 04:17 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently 1257 online users. [Complete List]
» 2 Member(s) | 1255 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration