1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
Need Help with 49-405 Electronics
Winky Dink
Member
***
Posts: 122
Threads: 22
Joined: Dec 2013
City: Meridian, ID
#20

11-19-2015, 04:18 AM
I did the alignment on the set, but had some trouble with the one of the tuner trimmers.  As a result, the stations at the higher end of the band are received well, but not at the right place, and I think the highest frequencies are missing altogether.  Here are the trimmers before and after cleaning, and the condition of the mica on the suspect trimmer.


[Image: https://lh3.googleusercontent.com/-C2Uot...20comp.jpg]

I was wondering if I could use the mica from a model 46-250 Transitone.  It’s not the right shape, but it fits and covers all of the area of the round dielectric.  The screw from the older model also fits, and it would be much easier to do the adjustments because it has an actual slot.  
 
[Image: https://lh3.googleusercontent.com/-bPIWD...252520.JPG]

What do you think; is it worth trying the older dielectric and screw?
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Need Help with 49-405 Electronics - by Winky Dink - 11-08-2015, 04:03 PM
RE: 49-504 Trimmer Trouble - by Winky Dink - 11-19-2015, 04:18 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently 1218 online users. [Complete List]
» 1 Member(s) | 1217 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration