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

Philco 37-670 restoration thread
#17

Thanks for all the help so far.
I have done very little with this set, apart from replacing the candohm and burned out 5.6K resistor today. I am looking around the set for issues and today found a cut ground wire attached to the RF section. See pic. From the parts diagram/layout drawing, this appears to be part 20, a .05 cap that connects to Position 4 of the RF transformer, one side of the shadow meter, and some other parts.
I have looked around this part of the circuit and cannot find a replacement cap; so I am unsure why someone in the past cut this out of the circuit and didn't replace it.
Two questions:
What does this cap do?
Also, would I be able to tie a replacement .05 cap anywhere along this node? Or should I try to keep it as close to the transformer as possible? Getting it in there will be tight, as that transformer is buried in the RF section. I would be easier for me to tie it into the shadowmeter, etc., but don't know if that's kosher.
Thoughts appreciated, thank you!

PS: Turns out the on/off switch is shot. Someone intentionally shorted it out with a soldered in wire, so I'm looking for a replacement if anyone has one. See the WTB section.

Ted


Attached Files Image(s)
       


Messages In This Thread
Philco 37-670 restoration thread - by Diverted - 12-30-2014, 02:55 PM
RE: Philco 37-670 rectifier - by millievolt - 12-30-2014, 03:25 PM
RE: Philco 37-670 rectifier - by Diverted - 12-30-2014, 04:03 PM
RE: Philco 37-670 rectifier - by Chuck Schwark - 12-30-2014, 03:28 PM
RE: Philco 37-670 rectifier - by millievolt - 12-30-2014, 03:33 PM
RE: Philco 37-670 rectifier - by morzh - 12-30-2014, 05:27 PM
RE: Philco 37-670 rectifier - by Diverted - 12-30-2014, 06:45 PM
RE: Philco 37-670 rectifier - by OZ4 - 12-30-2014, 07:14 PM
RE: Philco 37-670 rectifier - by Diverted - 12-30-2014, 07:35 PM
RE: Philco 37-670 rectifier - by OZ4 - 12-30-2014, 08:10 PM
RE: Philco 37-670 rectifier - by thirtiesradio - 12-31-2014, 02:44 AM
RE: Philco 37-670 rectifier - by Arran - 12-31-2014, 03:54 AM
RE: Philco 37-670 rectifier - by Diverted - 12-31-2014, 08:03 AM
RE: Philco 37-670 restoration thread - by John R - 12-31-2014, 04:19 PM
RE: Philco 37-670 restoration thread - by OZ4 - 12-31-2014, 12:03 PM
RE: Philco 37-670 restoration thread - by Diverted - 01-15-2015, 04:29 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 91 Speaker Replacement
The spider is glued on the cone and so is the voice coil. I think you can use a cotton swab dipped in acetone and carefu...RodB — 02:42 PM
Restoring Philco 37-604C
Yes I saw that. If I knew, I'd probably try to arrange for getting it myself. But I have just got one. Which does not m...morzh — 01:44 PM
Philco 38-2 Automatic Tuning
When you push the lever, you are supposed to rotate the disk to the desired station. Then the magnetic tuning will acqu...morzh — 01:42 PM
Philco 38-2 Automatic Tuning
I figure out the muting from another picture that helped. Now I need to know how the automatic tuning works. When I push...dconant — 12:11 PM
Philco 91 Speaker Replacement
How would I go about removing the spider from the cone?dconant — 12:04 PM
Philco 38-2 Automatic Tuning
Hello, I am having trouble getting my automatic tuning to stay unmuted. If I play with the tuning handle I can get it to...dconant — 10:51 AM
Does anyone make photofinish replacements?
Here’s the link to the DIY photofinish section of our site: klondike98 — 09:46 AM
Delco car radio Peko vibrator converstion issues
Hi Richard, Thx for posting the schematic.  As I remember as a kid, these were great performers for the time, likely...MrFixr55 — 08:56 AM
Delco car radio Peko vibrator converstion issues
hello mr Fixr, The Electro  Powersupply that I am powering the radio with has a huge choke plus a 10,000ufd electrolyti...radiorich — 10:58 PM
Delco car radio Peko vibrator converstion issues
How about putting a choke in the power supply? The big cap was likely an attempt to stabilize the DC. Kids who cre...MrFixr55 — 09:19 PM

[-]
Who's Online
There are currently 1245 online users. [Complete List]
» 1 Member(s) | 1244 Guest(s)
Avatar

>