49-501 Before & After - Printable Version
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+--- Thread: 49-501 Before & After (/showthread.php?tid=1317)
49-501 Before & After - tubenutt - 08-21-2008
[Image: http://i225.photobucket.com/albums/dd32/tubenutt/Philco49-501002.jpg]
[Image: http://i225.photobucket.com/albums/dd32/tubenutt/Philco49-501003.jpg]
http://s225.photobucket.com/albums/dd32/tubenutt/?action=view¤t=Philco49-501002.jpg
http://s225.photobucket.com/albums/dd32/tubenutt/?action=view¤t=Philco49-501003.jpg
- BDM - 08-22-2008
Actually, it's after & before
Nice job.
- tubenutt - 08-23-2008
Well, so much for my hubris, pictures and all. When I first started my troubleshooting, I couldn't get ANYTHING out the blamed thing...or so I thought. Getting all kinds of icky sounds from wiggling the 7A8 converter in its socket, I switched tubes..I had the foresight to order some extra Loktals from my cap order(I SURE don't collect the d**ned things!!). Some tubes won't work in some sockets!
OK, I could get RF off the end of my finger through it. The new filters are so quiet, you can't hear the 50A5 chatting!
I went to bed thinking about my troubleshoot and realized the next morning....I didn't hear the OSCILLATOR!!
So I go back to looking close at the oscillator section, hoping I had cold-slobbered something. NAHHH, I'm NOT a newby to the slobbering iron!
Back to my trusty Fluke 175....UH,OHHH, the primary of the O coil says infinity between the ends!
Thankful foresight!! I had bought another 49-501 with a broken cab for parts. The parts chassis sure is gonna miss it's oscillator coil!
The easiest part was getting the old one out, no de-slobbering, just careful use of needle-nose pliers.
I have the "new " O coil out without killing it! BREAK TIME!! The lead that goes to ground is too short now, but hopefully, I will still have a crumb or two of beeswax on it when finished. Then on to alignment, re-assembly, and a place of honor to sit for it.
- Texasrocker - 08-23-2008
Great job Tube!!! Keep up the great work!!
- tubenutt - 08-24-2008
UPDATE:
NOW it sounds like I have something to align! Just one problem: This radio is so "new", I realize I don't have the proper alignment tools! Always something isn't it?
I'm used to doing 1920s/30s radios with the 1/4" hex alignment trimmers!I'll check Radio Shack tomorrow, but that place has become an empty WASTELAND to their original customer base (us).
I'm gonna need them, too, 'cause my NEXT bench victim is a 49-506!
Then on to 'lesser' Zenith tabletop AM/FMsTR, thanks for the encouragement!