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

Model 71 wire wound resistor and missing cap??
#1

Hello all. I have on my Model 71, item #52, the dual wire wound resistor with a burnt out 245 ohm section. Since it is in series with other 1/2 watt resistors, I assume it will be safe to tie in a normal carbon 1/2 watt resistor? I have rewound many oscillator and other types of coils, but am not going to try to find resistive wire and do this resistor. Also my radio appears untouched and is missing item number 55 ( I think, all of these prints are so blurry and hardly legible in the parts ID listing/diagram), 3615-G, a 0.5uF cap. Any thoughts? Thanks!!
#2

Yes it would be safe, and I would recommend removing some of the burnt part, if possible (if not potted.)
Just make sure your power rating is adequate - see what current there is and then triple the rating vs the dissipation.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

The 3615 bakelite block has 0.05uF caps, either 1 or 2 depending on the suffix. You can easily stuff new caps into the block. There are several techniques used to do this. Search the Phorum to read about that.
#4

Thanks Rod- The problem is that cap is missing, it appears like it was never there. I usually re-stuff all my caps especially Bakelites. Thanks.
#5

Got ya. So I checked my. Beitman schematic for this one and I couldn't find part 55 on the parts list. Like you said the list is fuzzy. And I didn't see it on the schematic either.
#6

.docx philco 71 id diagram.docx Size: 811.44 KB  Downloads: 141
#7

Hello. Here is a picture from Beitman's diagrams, you will see my note for the possible number 55, I have "not there" written in. I think number 38 is used instead. I can figure it out but in the other schematic I found on Nostalgia Air's schematic they talk about changes below run number 4; how would I figure that out? Should I apply those changes or not? Thanks!!




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 16B Parts
Thanks for the reply. Unfortunately the radio was removed before bidding was over so I didn't get a chance to bid.dconant — 04:10 PM
Philco 16B Parts
Hi Dan, Mike is correct, there's a lot of painted stuff on the chassis but it looks pretty good. The sm is all there,sp...Radioroslyn — 03:50 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A...captainclock1988 — 03:43 PM
Philco 42-390, code 121 speaker
Using a 5W  1.5k  ceramic resistor in place of the field coil and using a 4 ohm PM speaker, I was able to bring the radi...Stevelog — 02:57 PM
Philco 60 Squealing
I have taken out the 2nd IF and found a problem or not. I believe the coils are litz wire. There is a very small strand ...dconant — 02:13 PM
Philco 6K7
I am restoring a Philco 37-60. The am reception is very good, but the shortwave is very weak. Run 6 Philco removes the g...bobbyd1200 — 01:35 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A5...MrFixr55 — 06:48 AM
American Bosch Model 802 auto radio
I think it would come under either American Bosch or United American Bosch. American Bosch made sets for the American We...Arran — 05:53 AM
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM

[-]
Who's Online
There are currently 6271 online users. [Complete List]
» 3 Member(s) | 6268 Guest(s)
AvatarAvatarAvatar

>