Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 1 Vote(s) - 5 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco 511 Restoration and Questions
#23

Hey guys,

I finally finished the main filter block.  I followed the wiring diagram to a "T".  Here is a picture of the end result.  Everything was tested and double checked, a successful repair!  If you look on the can within this picture you will see that I essentially wrote with a grease pen that the can was "Re-Stuffed"  for any "future radio restorers".  I was able to just snap the lid with all the parts attached, to the rest of the can.  Friction held it on originally, and I was able to replicate a very similar process without damaging the can itself.

Next I hooked up a fully restored Heathkit T-2 Signal tracer (with universal output trans to use as a test speaker) to the speaker jacks correctly via the Heathkit owners manual (no output trans on this receiver it's self).  The original speaker is missing from this set and I do not have another magnetic speaker on hand.  I turned on the set first with a dim bulb.  Power trans has no shorts, bulb lit and dimmed very nicely.  Next I powered the set up at 110VAC via a variac.  All the tubes lit including the pilot lamp, but no sound despite the variable condenser and knobs manipulated every which way.  I have a 70 ft outside antenna connected properly.  No ground connected though.

I next tested what voltages I could on each of the tubes, they seem normal, results below.  I tested all three chokes, results not recorded, but all tested around 200 OHM, I would say they are good.  I also tested 1st and 2nd AF trans, results below.  No opens, but the secondary on the 1st AF (one side to ground, other to the grid of the 26 tube) read 1.41 MEG OHM while all other primary/secondary readings on the AF transformers read in the thousands.

I am thinking the secondary on the 1st AF trans is open due to this 1.41 MEG OHM reading, thus causing no sound out of the receiver.  I am only a novice at this stuff and it took me this last week with the help of books/reading and several friends to figure this out.  What do you guys think????

Thanks


Attached Files Image(s)
           

"A Minute of Care is Worth an Hour of Repair" circa 1930.


Messages In This Thread
RE: Philco 511 Restoration and Questions - by Philco281989 - 10-08-2015, 12:58 PM
RE: Philco 511 Restoration and Questions - by Jimmy Radionut - 07-14-2017, 12:46 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Need Help to ID this radio 11 tube Philco
Yes the 16B as morzh pointed out. Specifically its the January 1935 model version of the 16B. There are a couple earli...klondike98 — 11:51 PM
48-482 rear panel help
Welcome to the Phorum, keithchip! How far you take a radio on cabinet restoration is a matter of personal preference. ...GarySP — 11:28 PM
48-482 rear panel help
I've recently finished the internal restoration of a locally purchased Philco 48-482. The cabinet is in ok shape except ...keithchip — 10:28 PM
Need Help to ID this radio 11 tube Philco
Welcome to the Phorum, Ken! Lots of help here for all of your restoration questions. Take care and BE HEALTHY! - Gar...GarySP — 07:59 PM
Need Help to ID this radio 11 tube Philco
Thank you. I went to your online library and found 2 schematics. I will download and compare to components!Ken D. — 06:31 PM
Need Help to ID this radio 11 tube Philco
It is a 16B tombstone.morzh — 06:13 PM
Zenith H725
David - sorry, I reread your post and finally saw THD - now the % figures make sense. Thanks for explaining. The PSU...EdHolland — 06:06 PM
Need Help to ID this radio 11 tube Philco
Hi Everyone, New member but have been reading this for awhile for tips! Vaccum tubes were before my time so bear with ...Ken D. — 06:03 PM
My Philco 37-116 Restore
Thank you MrFixR55, I appreciate your comments very much. I do not detect much hum if any so I will be staying with the ...dconant — 05:15 PM
My Philco 37-116 Restore
Hi DConant Yes, you can replace chokes with resistors.  You do stand the risk of increased hum.  the solution is to inc...MrFixr55 — 04:23 PM

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

>