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

capacitor question?
#6

HI Shawn,
I doubt that the new caps would be the cause of the low volume. Is there a possibility that you may have miswired one of the three caps? Or, that you replaced the cap with a different value?
The 'manual' for the set probably wouldn't have any wiring diagram to go by. The schematic is the best way, and I can understand how you could find it daunting.

In learning how to interpret these, you must compare what you see on the chassis, to what you see on the diagram. Start with the power cord, it is pretty much self explanitory. Other parts can be identified, such as the tubes and the capacitors.
Select one of the caps you replaced. See where it is connected under the chassis. "One end of the cap is connected to pin 4 of the xxxx tube, and the other end goes to a 470,000 resistor....." Then look at your schematic and try to find it there.

You should see the cap connected to the places you saw physically. Do that with the other caps. If you had good volume before, and only replacedd 3 caps, I suspect that one wire was misplaced. If not, then perhaps you moved another wire so that it is touching something? Check to see if the tubes are in their proper sockets.

Don't give up so fast, you may eventually get it. But I'd suggest that you don't replace any other caps until you have verified everything is in the correct place, and tried to get the volume back. Replacing more caps could add to your problems.
Take care,
Gary.


Messages In This Thread
capacitor question? - by Guest - 10-31-2009, 05:51 PM
Re: capacitor question? - by Alan Douglas - 10-31-2009, 09:18 PM
Re: capacitor question? - by Guest - 11-01-2009, 08:03 AM
Re: capacitor question? - by codefox1 - 11-01-2009, 01:26 PM
Re: capacitor question? - by Guest - 11-01-2009, 05:02 PM
Re: capacitor question? - by gary rabbitt - 11-07-2009, 01:04 AM
Re: capacitor question? - by Guest - 11-11-2009, 02:39 PM
Re: capacitor question? - by Alan Douglas - 11-12-2009, 05:22 PM
Re: capacitor question? - by Guest - 11-17-2009, 03:28 PM
Re: capacitor question? - by exray - 11-19-2009, 08:02 AM
Re: capacitor question? - by Ron Ramirez - 11-19-2009, 09:44 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model #20
AHH HA , I got it and can’t thank you fellows enough , when I changed the capacitors I took the advice and did not unsol...onlyrick — 02:24 PM
Zenith H725
Hello Ed, yes, I like letting projects run for few days to make sure they don't start acting up . Sincerely Richardradiorich — 01:03 PM
Philco 46-480 Electronic Restoration
I am almost finished with this restoration. All which remains is the power transformer. I cleaned it up some time ago, b...jrblasde — 12:41 PM
Philco model #20
I seem to recall in some TRF sets there being a Local/Distance toggle switch that removes the B+ from the first 24 rf tu...RodB — 09:46 AM
Refinishing Ideas
Hi Doppelganger, After rereading your thread, did you mount the Zenith speakers in the two bottom left and right pos...MrFixr55 — 09:39 AM
Philco model #20
Hi Rick, One other thing regarding volume on this set.  Make sure that the tube shield is in place.  this is that la...MrFixr55 — 08:22 AM
Philco model #20
Hi Rick, The volume control on the Model 20 has 2 sections and does 2 seperate things: One part of the control, ...MrFixr55 — 10:30 PM
Philco model #20
Hello again fellows , well I powered up the set this evening after I had changed every cap and resistor in this set and ...onlyrick — 09:34 PM
Zenith H725
Yes - better it happened on the repair bench than returning to the owner. The other question is - do I also dissect a...EdHolland — 09:08 PM
Zenith H725
That's a bummer but get them now. Paul BPaul Philco322 — 08:27 PM

[-]
Who's Online
There are currently 797 online users. [Complete List]
» 2 Member(s) | 795 Guest(s)
AvatarAvatar

>