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
Phico 52 volume control problem
Radioroslyn
Phorum Expert
*****
Posts: 7,294
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#2

09-09-2013, 07:34 PM
What you got is a volume control that does two things. The top half controls the level of RF that go to the input to the mixer. The bottom controls the cathode bias on the IF amp. So I would check #34 and the 35 tube. When you look at the schematic it does look confusing with the B+ going to ground thru the volume control.
GL
Terry
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
RE: Phico 52 volume control problem - by Radioroslyn - 09-09-2013, 07:34 PM
RE: Phico 52 volume control problem - by Arran - 09-09-2013, 09:27 PM



Users browsing this thread: 5 Guest(s)
[-]
Recent Posts
New member
Good picture, When was it taken? You don't look in it like a guy who has a teenage son :)morzh — 06:13 PM
New member
Love the pic! I'm southern IL, so wouldn't be much help and Bob Anderson is very good on those, but lives in Chicago are...TV MAN — 05:25 PM
Philco 40-120C Filament Wiring
:thumbup:klondike98 — 04:56 PM
Philco 40-120C Filament Wiring
With these values I think you are OK; the Cmax for this tube is 40uF. Your Vbb could rise a bit, but probably not too mu...morzh — 04:53 PM
Philco 40-120C Filament Wiring
BTW, someone had replaced the original 20uF/20uF filter cap with a 47uF/33uF cap. Do you think these values are safe on ...bluecap — 04:33 PM
Philco 40-120C Filament Wiring
You're correct. I was misinterpreting the key position. I now know where it is, and things are making sense. I appreciat...bluecap — 04:29 PM
Philco 40-120C Filament Wiring
I think Morzh has a good thought. Check the key position. The under chassis diagram in the Philco info shows an “H” for ...klondike98 — 04:25 PM
Philco 630csx power cord
Yes, the third wire goes to the stud on the side and is separate from the other two. I've usually used cloth covered ...Tynwald — 03:09 PM
New member
Have you tried Alabama Historical Radio Society? They possibly could recommend someone. I remember a name of Dee Hanes...morzh — 03:08 PM
Philco 46-480 Electronic Restoration
Nope, he can’t tell me the dimensions. Looks like I won’t be buying it.jrblasde — 02:38 PM

[-]
Who's Online
There are currently 4066 online users. [Complete List]
» 1 Member(s) | 4065 Guest(s)
Avatar

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