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 Model 630X Repair Issues
#1

Hello again! I have a model 630x (console) just did the recap, reworked the bakelite caps properly. I got to the ELectrolytics and experienced the same level of confusion I've seen others experience concerning the multi-value electrolytic can with that pesky 10 mfd cap. 8-8-10 is the configuration. I have a 10 mfd 450V electrolytic hooked up apparently backwards; the positive is wired to B- with the negative ends of the two 8 mfd. caps and the negative is wired to a ground on the 78 tube socket just above. I replaced a yellow Aerovox 10 mfd 50 v. that was gooped in with ALOT of solder. Do I HAVE to use 50V or will 450V be okay? Also, I do not have anything soldered to the can threaded ring any longer. The schematic has the two 8 mfd. caps wired with neg. to B- and the 10 mfd hooked to B-with a ground to chassis so I saw no need to continue using the can as a source of circuitry for the set. The set hums and will not pick up a station right now. It also has a terminal board mounted on the left side of the chassis that had a cap listed as part #68 which is the id for the pilot lamp??? I found the cap, 30-4134 on Philco repair bench to be a .25 400v. Appears to affect the shadow tuner. Would it also affect the radio receiving stations if it was open? The shadow tuner lights up but the meter does not swing as you tune the set. The tubes are all good no leaks or shorts. The 42 tests just a few clicks into the green good range on my Precision 612 tube checker (calibrated and repaired last summer.) This thing has me pulling my hair out. Is the ground to chassis used for the 10 mfd cap through the 78 tube socket OK to use? I'll go home and putz around with  it some more and wait to hear something. 


Messages In This Thread
Philco Model 630X Repair Issues - by dfields69 - 10-18-2014, 02:21 PM
RE: Philco Model 630X Repair Issues - by Mondial - 10-18-2014, 03:32 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Philco Model 38-7: what caps & resistors do fail typically?
Yep the dim bulb test is OK but I'd definitely replace all those electrolytics before I did it. Since those #47 conden...klondike98 — 09:18 PM
Philco 42-345 Restoration/Repair
The resistor is a 2.2 Meg, it was the last one I hadn't replaced. The broadcast is coming in after replacing it.osanders0311 — 09:09 PM

[-]
Who's Online
There are currently 971 online users. [Complete List]
» 1 Member(s) | 970 Guest(s)
Avatar

>