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 42-355 speaker and field coil replacement
#5

I have completed the installation of the heat sink resistors to replace the field coil. Also have replaced the electrolytics, paper caps, out of spec resistors and the bad wiring. I turned it on today and am having some problems with the AM tuning. Initially I was able to receive stations in the 1100 to 1300 range but the dial did not read correctly and I could not receive a strong station around 1500 nor could I receive anything below about 1000. I adjusted the broadcast-series compensator (item 6E on the parts list and was able to receive the strong station around 1500 at the proper spot on the dial. The stations below 1500 to about 1100 still come in but not at the correct dial setting and still no reception below 1000. For example a strong staion at 1140 comes in at about 1050 on the dial. I also tried adjusting the broadcast-oscillator (item 6F) but could not detect any improvement. I need some help and will appreciate any and all advice.

Bob





Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Rogers Majestic R-646
You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM
HiFi (Chifi) tube amp build - but my own design.
So, here's Prince on stage halfway through Purple Rain when he stoops down to his tech and says "Rod, pull out that...RodB — 09:17 AM
Rogers Majestic R-646
Today I finished inspecting all the parts. The result is not very pleasing. The first positive news: 1) The power tr...Vlad95 — 11:40 PM
HiFi (Chifi) tube amp build - but my own design.
Well, found muh culprit. After using socket test adapters and finding voltages all ok, swapping 6V6s, no avail, swapped ...TV MAN — 11:18 PM
HiFi (Chifi) tube amp build - but my own design.
Well, maybe - maybe not  :lol: It's been an interesting project so far! Something so simple, yet so cranky. The 1st one ...TV MAN — 05:12 PM
1949 Motorola 5A9M
Haven't thought of Burgess batteres in a while  https://www.radionostalgia.ca/lib/Images/battery/us/burgess1D.jpgi ...Vlad95 — 03:50 PM
Philco Model 16 wiring question
Measure the voltages first, just in case.morzh — 02:19 PM
1949 Motorola 5A9M
Haven't thought of Burgess batteries in a while Mr. Fixer. Boston Edison always used Burgess in their Bright Star yellow...Paul Philco322 — 02:17 PM
1949 Motorola 5A9M
Thanks Sam. I'll let you know. I can probably scare some up from the local radio club.klondike98 — 02:07 PM
Philco 89 Code 123 Osc Coil
Hello,  I thought I would post my findings on my bad oscillator tickler coil. There were 27 turns on the outer coil b...dconant — 12:38 PM

[-]
Who's Online
There are currently 1013 online users. [Complete List]
» 3 Member(s) | 1010 Guest(s)
AvatarAvatarAvatar

>