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

Laundry list of problems
#2

Welcome to the Phorum!
Icon_wave

First things first. 
Don't power it on again until you have at least replaced the electrolytic capacitors C101 and C102. Eventually all the paper capacitors should be replaced and any of the resistors that are more than 20% off their spec value as well.

If you are new to working on vintage electronics like this and you want to do the restoration/repair yourself you will need to do a lot of reading to learn about the restoration process.  Read through some of the restorations that folks have done on this site in older threads.  We have service tips and information in our Library as well.  That is at: https://philcoradio.com/library/
A good beginners read is from Phil Nelson's site: https://www.antiqueradio.org/begin.htm  If you want someone else to work on it there are folks who do that. A 46-1209 schematic is found at: https://philcoradio.com/library/download...6-1947.pdf 

You will need a digital volt/ohm meter and a soldering iron at a minimum and a signal generator to properly align the set.
It will not work if there are missing vacuum tubes.  Even if the filaments are glowing, the tube may not be working correctly.  A tube tester can help diagnose bad tubes.  If you decide to restore the set, go slowly, take a LOT of photographs of the wiring and components as you disconnect things and resolder and reconnect.  The photos help you put it all back together.  There are many folks here on the Phorum far more skilled than I who can help you through this.  Ask questions in this thread as you go along and folks will respond.  There will even be some folks that have worked on a 46-1209.  Adding pictures sometimes also helps.


Messages In This Thread
Laundry list of problems - by wiccadwitch - 03-09-2021, 05:55 PM
RE: Laundry list of problems - by klondike98 - 03-09-2021, 07:24 PM
RE: Laundry list of problems - by mikethedruid - 03-09-2021, 08:34 PM
RE: Laundry list of problems - by RodB - 03-09-2021, 09:36 PM
RE: Laundry list of problems - by wiccadwitch - 03-11-2021, 11:44 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Zenith H725
David - I think I understand but what units are you discussing (Low of 1.7, high of 3.9)? Budget constraints for Ham ...EdHolland — 01:43 PM
My Philco 37-116 Restore
You're doing great. I wish I could be more involved, but my mind is right now preoccupied with the reason I am here in ...morzh — 12:21 PM
My Philco 37-116 Restore
Hope you guys are still with me. I have moved on to the alignment. I completed the IF alignment which was pretty muc...dconant — 10:47 AM
My Philco 37-116 Restore
Hello MrFixr55, Thank you for taking the time to explain. I measured 50 volts where you say. Today the 370 volts at ...dconant — 12:51 PM
462ron
Oh that sucks. It’s something easily overlooked. Hopefully it’s nothing more than a resistor! Ron462ron — 08:08 AM
Philco 46-480 Electronic Restoration
Just confirmed that you are correct. It’s the function generator. I connected the signal output probe to one of the inpu...jrblasde — 07:52 AM
Philco 46-480 Electronic Restoration
Ouch, you may be right. Yes, it is solid state. It’s the signal output of my oscilloscope. May be time to crack that ...jrblasde — 07:27 AM
462ron
If you didn’t put a DC blocking cap between the signal generator probe and the plate of the 1st IF it’s possible you ble...462ron — 07:07 AM
My Philco 37-116 Restore
Hi DConnant, The reason why C127 is isolated from ground is because sets of this vintage did not have the center tap...MrFixr55 — 01:07 AM
Philco 46-480 Electronic Restoration
The shield is on the 6H6. It was, in fact, a missing jumper to connect the main chassis ground to the RF chassis grou...jrblasde — 10:58 PM

[-]
Who's Online
There are currently 1041 online users. [Complete List]
» 2 Member(s) | 1039 Guest(s)
AvatarAvatar

>