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

Help Philco 37-84 doubts
#1

Hello.
I'm repairing a Philco 37-84 but I have a problem. I found a disconnected cable and I do not know where to connect it. I've shown in the photo.
[Image: https://dl.dropbox.com/u/7295556/PhilcopreguntaPOST.JPG]

Where should this be connected?
Thanks,
Carlos
#2

Carlos, I believe that is the "gimmick" that is described in the following: http://www.philcorepairbench.com/tips/svctip43.htm . I can't quite tell where the lead goes but it sure looks like it. The "cut" end does not connect to anything but the lead is capacitively coupled to the circuit.
#3

After replacing defective capacitors and seristors the radio does not work. Does the typical click when I connect the antenna, but does not receive stations.
I think the problem is in the adjustable buttons. But I do not know how to make this adjustment and I dare not touch. I have no tools for adjustment
What do you recommend?
[Image: https://dl.dropbox.com/u/7295556/PhilcoC...orpost.JPG]
#4

You know what it looks very much like? Philco 80jr. Even the underbelly looks the same.

Went to look. Well, there is not much to both this and jr. Schematics are very similar, except this one uses pentodes in det-osc and 2nd det.


Well, use a variac, isolating transformer and start measuring voltages. We need to know what they are before we get to touch anything at all.
#5

Indeed, the primary oscillator coil was open. I've already extracted, as you can see in the photo.
Thanks for your help.

[Image: https://dl.dropbox.com/u/7295556/Bobina1post.JPG]
#6

Time to break out the 38G wire (or so) It's about 25turns and make sure you wind it the same direction as the original. Also turn the volume control all the way up and measure the resistance from the ANT post to gnd. If it is open you will need to rewind the primary on the ant coil too.
Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Rogers Majestic R-646
By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM
Rogers Majestic R-646
No, you are wrong, because you did not know the details. Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM
Rogers Majestic R-646
The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM
Rogers Majestic R-646
Thanks RodB for the help. But this is not a real solution to this situation, not even a temporary one. Because the firs...Vlad95 — 11:34 AM
Philco Model 16 wiring question
I was going to check the voltages as you suggested and hooked it up to my dim bulb. It appears I have a short. The bul...bobclausen — 10:34 AM
Rogers Majestic R-646
You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM
HiFi (Chifi) tube amp build - but my own design.
So, here's Prince on stage halfway through Purple Rain when he stoops down to his tech and says "Rod, pull out that...RodB — 09:17 AM
Rogers Majestic R-646
Today I finished inspecting all the parts. The result is not very pleasing. The first positive news: 1) The power tr...Vlad95 — 11:40 PM
HiFi (Chifi) tube amp build - but my own design.
Well, found muh culprit. After using socket test adapters and finding voltages all ok, swapping 6V6s, no avail, swapped ...TV MAN — 11:18 PM
HiFi (Chifi) tube amp build - but my own design.
Well, maybe - maybe not  :lol: It's been an interesting project so far! Something so simple, yet so cranky. The 1st one ...TV MAN — 05:12 PM

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

>