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

Kadette model 35 open iF
#1

   

Have the radio recapped, checked all the resistors, traced out all the coils and verified continuity but found I have an open primary on the 2nd IF between the 6D6 IF tube and the 75 tube. I removed the can and checked out the coil and all the external connections are still present and connected so the break must be in the coil winding itself. Short of trying to rewind the coil...which I really don't want to attempt...is there a way to bypass that open primary? I was getting -6 volts on the plate of the 6D6 IF tube instead of the 180 volts it calls for which was the red flag, otherwise all other voltages are present, albeit a bit high.

Both IF cans measured 20 ohms on the primary and secondary sides (well just the secondary on the 2nd IF, of course). I found an IF from a 1936 5 tube Crosley I parted out that has 28 ohm primary and secondary windings, so I gater wired that in just to see if it made a difference. I now have 182 volts on the plate of the 6D6 IF tube, but otherwise the radio is dead. No noise from the center of the volume control, however on the plate of the 75 tube I have a somewhat weak output buzz that's controllable by the volume control. Otherwise there's no buzz touching the grid caps of any of the 6D6's or the 75 tube. 

Everything that could go wrong on this radio did. Open speaker field coil, fried power transformer, and now open IF can. But I'm determined not to take if off life support!

Greg V.
West Bend, WI
Member WARCI.org


Messages In This Thread
Kadette model 35 open iF - by NostalgiaRadioTime - 02-19-2022, 11:36 PM
RE: Kadette model 35 open iF - by Radioroslyn - 02-20-2022, 09:52 AM
RE: Kadette model 35 open iF - by Radioroslyn - 02-20-2022, 04:33 PM
RE: Kadette model 35 open iF - by RodB - 02-20-2022, 04:53 PM
RE: Kadette model 35 open iF - by Ron Ramirez - 02-20-2022, 08:00 PM
RE: Kadette model 35 open iF - by mikethedruid - 02-21-2022, 01:19 AM
RE: Kadette model 35 open iF - by RodB - 02-21-2022, 10:32 AM
RE: Kadette model 35 open iF - by Paul Philco322 - 02-25-2022, 09:14 PM
RE: Kadette model 35 open iF - by klondike98 - 02-26-2022, 02:30 PM



Users browsing this thread:
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

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

>