42-380: Looking under the chassis - Printable Version
+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: 42-380: Looking under the chassis (/showthread.php?tid=8594)
+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: 42-380: Looking under the chassis (/showthread.php?tid=8594)
42-380: Looking under the chassis - Eric T - 01-25-2014
Since I haven't ordered parts for this set yet, I thought I'd take the time to check what I'll need in addition to caps and resistors.
Power transformer reads good resistance, so hooray.
Audio output transformer (part #32-8120) has an open primary.
That's 2 for 2 1942 model Philcos I've worked on with bad audio xfmrs.
Anyway, the service bulletin for this model says that it's only 3 watts audio output. I'm thinking a Hammond 125B or 125C will work as a generic replacement. Though I do wonder how much the sound will suffer given that these Hammond's frequency response is only 150Hz-15KHz. Was the original any better?