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

Philco 37-670 Shadow Meter Woes
#5

Well, the good news is I think I now know the problem.  After viewing the photos on the Phorum, it looks to me that the magnet is MISSING!  There is a shadow on the front of the coil that looks like perhaps something was there but no longer.  Even though it does not appear that the meter has been fooled with or opened.  Can someone confirm that this is the case?  Of course, if that is true, then I guess I will never have a functioning shadow meter.  Again, the symptom is that the shadow will not fill the screen (with no antenna connected), and when the voltage across the coil is varied, only the LEFT side of the shadow moves - the right side does not.  The coil is good, the set has been restored and aligned (at least on the first two bands) and the coil voltage varies between 6 and 15 volts.
   
There is also a chunk of the coil bobbin missing on the back of the coil, exposing the winding.  That, at least, appears fixable.  I guess my next move (if the missing magnet is confirmed) is a classified ad.


Messages In This Thread
Philco 37-670 Shadow Meter Woes - by davemc - 03-30-2016, 09:46 AM
RE: Philco 37-670 Shadow Meter Woes - I give up! - by davemc - 04-03-2016, 12:02 PM
RE: Philco 37-670 Shadow Meter Woes - by titan1a - 05-03-2016, 08:45 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model #20
Hi Rick, The volume control on the Model 20 has 2 sections and does 2 seperate things: One part of the control, ...MrFixr55 — 10:30 PM
Philco model #20
Hello again fellows , well I powered up the set this evening after I had changed every cap and resistor in this set and ...onlyrick — 09:34 PM
Zenith H725
Yes - better it happened on the repair bench than returning to the owner. The other question is - do I also dissect a...EdHolland — 09:08 PM
Zenith H725
That's a bummer but get them now. Paul BPaul Philco322 — 08:27 PM
Zenith H725
I completed the insulation on the cabinet interior (Al foil and hi temp silicone rubber), and reglued the speaker gasket...EdHolland — 06:18 PM
HiFi (Chifi) tube amp build - but my own design.
Tim - Photos of 8 octal tube sockets. (Top and bottom) Send me a PM if you're interested.RodB — 04:11 PM
VTVM meter moves when my hand is next to it & not on
Haha! I hope so. It seemed rather lost and forgotten languishing in the frozen Northeast of England.EdHolland — 02:36 PM
VTVM meter moves when my hand is next to it & not on
Ed - it's in the Cayman's enjoying the good life.RodB — 02:14 PM
VTVM meter moves when my hand is next to it & not on
Static electricity - but the other chaps beat me to it again. I've seen this before with analogue meters. I've also ...EdHolland — 01:56 PM
Need to purchase some accessories for restoration of my Old Philco Radio
Hi Paulo, Welcome to the Philco Phorum. I can see why you want to find good reproduction parts. That is a bea...MrFixr55 — 11:10 PM

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

>