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

[split] 42-345
#1

I recently bought a Philo 42-345.  The first time it was turned on it had the typical hum to it.  I replaced all of the caps, cleaned it up a bit, checked the tubes, added a new power cord, and it came right up without the hum.  I was using a variac when bringing it up.  It played very well on all three bands for about an hour.  I was switching between the bands and suddenly lost all output, except for static from the speaker.  The lights on the dial continue to work.  I've checked the tubes, substituted replacements for those that I have just in case my tube tester is not working right.  I've checked the capacitors and most of the resistors. Tonight when I was looking over the radio, I noticed that the Broadcast oscillator had a peeling on the backside of it.  My question is, could this be the source of the problem or should I keep looking?  Would appreciate suggestions.


Attached Files Image(s)
   
#2

Welcome the Phorum!

I've split this from the other 42-345 thread. It's easier to keep straight what set we're talking about if you start a new thread for new questions about a different set.

-Moderator Team
#3

Welcome to the Phorum!
Icon_wave
#4

Check all sections of your oscillator coil. Then work your way out from it checking every part of the oscillator section. Sounds like you problem is there.
#5

The last thing you were doing when the set went silent was "switching bands ." There might be a problem with the band switch contacts. I noticed the 3 oscillator coils are selected by the band switch to connect to a the tuning condenser oscillator section.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM

[-]
Who's Online
There are currently 2398 online users. [Complete List]
» 2 Member(s) | 2396 Guest(s)
AvatarAvatar

>