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 90 Highboy Middle Repair
#16

I noticed when I put my hand near the tubes marked in green in attached picture the volume increases,  also picks up several more stations.


Attached Files Image(s)
   
#17

Try using a longer antenna. What's happening is your body is acting as the antenna.

Steve

M R Radios   C M Tubes
#18

Also make sure the antenna and RF coils do not have an open winding.

--
Ron Ramirez
Ferdinand IN
#19

I'm using a wire about 25 feet long running over to the next room. It gets excellent reception while placing my finger on top the #24 1st detector
tube wire.
#20

Is reception better with your finger on the 24 converter tube (1st detector) than it is without?

If so, seriously, check continuity of the antenna coil (5) and RF coil (7). Especially RF coil (7). An open primary of (7) will cause the very problem you describe.

--
Ron Ramirez
Ferdinand IN
#21

Hello Ron, you are correct. Open winding on RF coil 7.
#22

I removed the coil. Found the break in the wire. I tried unwinding one turn and the thin wire
just breaks apart. Very discouraging. Any suggestions will be greatly appreciated.
#23

As best as you can, try to count the number of turns. If you don't get it exactly right, don't worry - these coils aren't critical as to turns count. Also - and this IS important - note the direction the coil is wound in.

Rewind with 38 gauge enameled wire. When you are done, the radio will work again although it will have to be aligned.

--
Ron Ramirez
Ferdinand IN
#24

Thanks Ron I will order a roll of the wire.
#25

Success! Radio is playing perfectly. I measured the length of the windings and took a picture, zoomed in and counted 94 turns. I rewound the coil with the new 38 gauge magnet wire, it was difficult to keep track of the turns, so I wound it till I reached the length measured. I counted the turns under a microscope the count was about 150, at 34 ohms. I installed it thinking I can always remove the turns if I cant align it. To my surprise the radio played. Not only did it play, it picked up stations clearly from 560 kz to 1400. The stations were exactly where they were supposed to be on the dial. I don't think an alignment necessary. Thanks again
#26

Attached are before and after pictures of the transformer.


Attached Files Image(s)
       
#27

Hello everyone. I need to replace the dial light. Can someone tell me what voltage and watts of the bulb I need. Thanks
#28

Methinks your looking for a #41 lamp 2.5v@1/2a.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#29

Thanks, I found a #48 in my parts drawer 2v @ .65 amp
I'm going to try it.
#30

.065a for a farm set.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Studebaker/Philco AC-2687 car radio
Arran, Thanks for checking you manuals. I appreciate that. Let me know what you find. PhilPdouglaski — 08:46 AM
Studebaker/Philco AC-2687 car radio
I have some car radio service manuals, Riders I think (not to be confused with the big blue binders), so I may see if on...Arran — 01:20 AM
Philco model 40-100
Greetings; Here is an update, I found a listing on fleabay for a similar chassis to yours, and it has a photo of what...Arran — 12:58 AM
Philco model 40-100
Greetings; I think I may have found a clue as to what is missing, from a search I made, there is a rear view of the c...Arran — 12:12 AM
Philco model 40-100
I recently acquired a Philco model 40-100 farm (battery) radio. The radio was in very good condition except the red on f...mhamby — 05:59 PM
Studebaker/Philco AC-2687 car radio
Hello, Richard the radio is an AC-2687 Studebaker model. The Philco model is S -5323 and the chassis p/n is S-5523Pdouglaski — 11:52 AM
48-482 rear panel help
The 48-482 is an AC only set as well, featuring a power transformer. While the transformer shouldn’t get “hot”, it is ye...jrblasde — 11:12 AM
Studebaker/Philco AC-2687 car radio
I gave a Chrysler/MoPar car radio from 1954, it was made by Philco, and it uses two chassis, one has the power supply an...Arran — 11:06 AM
48-482 rear panel help
Hello keithchip. You could make a hardboard back for the set, but make sure you provide plenty of ventilation holes in ...GarySP — 11:04 AM
Studebaker/Philco AC-2687 car radio
Welcome to the Phorum, Phil! Lots of friendly help here to assist you along the way! Take care, - GaryGarySP — 10:55 AM

[-]
Who's Online
There are currently 822 online users. [Complete List]
» 2 Member(s) | 820 Guest(s)
AvatarAvatar

>