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

Philco 90 Ball of Confusion!
#5

Ron, thanks for the response. I connected the components as you described. Of course, now the radio doesn't play Icon_razz , but then again, I did not check it each time I put in a new cap or re arranged the wiring back to original RATS! I noticed also that the RF 27 tube does not appear to light up. How did I manage to screw that up? The radio was working before I started the recap/re-wire process, but had significant oscillating problems and sound was very uneven a not very clear (which is the major reason I wanted to do the recap)
A couple of thoughts; have we found a new shcematic /parts diagram error? Again, my parts list calls for a C-18 3903-M for C-18, not R type. The schematic does not seem to jive with the parts diagram and did not notice any changes made in the Riders about a substitution for a 3903-M for and R. I also have concerns about R 1 and R 49 and where they are supposed to be gorunded. Schematic shows they are to be grounded to chassis, but the parts diagram is unclear and they are currently grounded to the # 1 lug of C-35 (which is OK I guess, but why different than what the diagram seems to show?
Would you or anyone else out there on the Phorum have a good photo of the underside of the chassis so I can confirm my wiring /component placement?
Lastly, the parts list shows 4 electrolytic caps (a 6 and 10 at C-56 and a 6 and 10 at C-57). Were the Mershon cans dual electrolytics? It is not obvious to me by the shcematic.
Thanks again for all your help.
SF/MG


Messages In This Thread
Philco 90 Ball of Confusion! - by madghost - 02-19-2009, 12:59 AM
Re: Philco 90 Ball of Confusion! - by Ron Ramirez - 02-19-2009, 06:57 AM
Re: Philco 90 Ball of Confusion! - by madghost - 02-19-2009, 09:08 AM
Re: Philco 90 Ball of Confusion! - by Ron Ramirez - 02-19-2009, 09:32 PM
Re: Philco 90 Ball of Confusion! - by madghost - 02-20-2009, 09:15 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Part numbers to model cross
Jim, We have this index put together by Dale Cook but I don't think that is quite what you are looking for. The Parts...klondike98 — 09:37 PM

[-]
Who's Online
There are currently no members online.

>