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Philco 604C Electronic Restoration
Ron Ramirez
Silent Key
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Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#38

06-29-2015, 06:15 PM
Well...not quite.

I found a 37-602 audio transformer in my stash o'stuff over the weekend.

I checked it out with the ohms function of my DMM and its specs were very close to original.

So I installed it.

No joy.

The volume is still low.

And the kicker...I disconnected the audio transformer and ran it through my signal tracer, using its audio transformer and speaker as before...and the audio is still low. Icon_thumbdown

I checked voltages again...they are now higher than what I posted before. Icon_crazy

I've made an executive decision. I am going to tear this thing apart, gut it to the bare chassis (save for the RF unit), and completely rebuild it. New wiring and all.

I did find the 1st IF secondary's resistance was near zero, by the way...I'll replace that transformer in the course of the complete, radical rebuild.
--
Ron Ramirez
Ferdinand IN
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Messages In This Thread
RE: Philco 604C Electronic Restoration - by sam - 06-14-2015, 10:43 PM
RE: Philco 604C Electronic Restoration - by Arran - 06-17-2015, 12:54 AM
RE: Philco 604C Electronic Restoration - by Arran - 06-19-2015, 12:07 AM
RE: Philco 604C Electronic Restoration - by Ron Ramirez - 06-29-2015, 06:15 PM
RE: Philco 604C Electronic Restoration - by sam - 07-16-2015, 04:17 AM
RE: Philco 604C Electronic Restoration - by sam - 07-19-2015, 08:14 PM
RE: Philco 604C Electronic Restoration - by morzh - 10-25-2020, 08:12 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration