Philco Transitone 46-250 Code 125.
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
I bought this some 1-1/2 years ago during Kutztown auction.
Could not resist the $12 or so price (it was cheap).
As you can see someone tended to it before - the chassis is hammer-painted.
The cabinet is just fine, the dial is like new (I do not think for 12 bucks I bought the radio with the new repro dial, but who knows).
Now, I am not tempted to turn it on even though somehow I think it might work.
I simply do not trust other unknown people with restorations.
Now having said that, I need some pointers as to how to extract the chassis.
I see one screw at the bottom, I see two screws holding the chassis behind the dial frame to the front, but the access is impeded by that very dial frame. Is there any trick or do I have to use some fine screw driver with partial access to the screw slot?
And of course I will have to unsolder the frame antenna.
It might be a short inspection and alignment, or...who knows.
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
As I recall, the chassis should not be held inside with any screws on the dial frame. I just looked inside my 46-806 Tropic, which is the same size as a PT-2/46-250, to confirm. I've pulled these things out before and never saw anything holding the dial frame against the front of the cabinet.
1. Note where the two wires of the loop antenna connect. Take notes, take pictures, or both. Then unsolder these leads.
2. Remove knobs.
3. Remove screws from underneath - there should be 3 - one near the back, two very close to the front.
4. Carefully slide chassis out from back.
Voila.
--
Ron Ramirez
Ferdinand IN
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Ron
Thanks, I will shortly post pictures of the bottom and inside with screws.
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
One screw on the bottom.
One screw at the right upper corner (look above the dial string roller)
Same at the left upper corner.
As you can see the vew of the screws is partial, and so is the access to them with scredriver.
(This post was last modified: 09-01-2014, 11:26 AM by morzh.)
Posts: 2,572
Threads: 337
Joined: Jun 2013
City: lawrenceville nj
mike
don`t over think it .screws should just hold dial plate in just remove one screw
Posts: 411
Threads: 42
Joined: Sep 2008
City: Ironton Ohio
I have the same radio, Dial glass does not come out with the chassis. There are 2 tabs on the front of the chassis that insert into 2 slots in the cabinet to hold the front of the chassis secure.
(This post was last modified: 09-01-2014, 02:11 PM by tab10672.)
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
So it one screw then and it will come out?
Posts: 411
Threads: 42
Joined: Sep 2008
City: Ironton Ohio
Yes, just the one screw, knobs and antenna. You will see after the chassis is out the 4 screws that hold the dial glass to the cabinet, 2 screws on each side held in by 2 thin metal retaining bars.
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Well, did that.
Did not want to come out. Those tabs were seriously grabbed by their sockets.
I took a large flat screwdriver and raised each corner several times.
Eventually I dislodged the left corner, and then after 3 more minutes of harrassing it the right one.
The right has some white stuff iniside; I wonder if someone tried to glue it.
The chassis was repaired recently, with all caps replaced, lytics and film, with modern orange dip types.
The guy who did it obviously can solder, the rework is neat.
He left the antenna cap in a Philco tube, as it is on top and so is visible, it is probably restuffed as the tar is not what you see in originals, it is black and cracking a bit.
So, I will check it against the sch, and if it is OK, will try to power, and, should it work, give it the alignment.
Posts: 2,128
Threads: 18
Joined: Oct 2008
City: Merrick, Long Island, NY
Well, souhnds like you have a winner, perhaps a minor flaw, but power up slowly on variac to see.
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
One finding, the loop is not connected where it should.
That is, one side of it is, like it should, goes to tuning cap and Ctl grid of the mixer tube, but the other end is soldered to the external antenna lead connected to the antenna transformer, and not to the other transformer's coil's end. Which though makes the reception possible, disables AVC.
And the transformer seems fine.
PS. I only have code 121 sch whereas the chassis is code 125. Still I think this is wrong.
(This post was last modified: 09-04-2014, 07:14 PM by morzh.)
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Found a couple of different prints both claiming being code 125.
One lists the rectifier 35Y4, Another - 35Z5, but the tube I have is 35Z3.
Checked the connection, seems to be correct for this tube.
The soldering on it is mostly neat, might be factory, the one that has been reworked is due to the caps change. So not sure if the tube is original or not.
The tube has no pilot lamp tap on the filament so the Candohm has a third pin (sch and photos of radios I see show 2-pin Candohm). The third pin is used to create that tap.
It clearly has been re-soldered. I think it is OK.
One sch that shows 35Z5 also shows 50L6 output tube (the one I have).
The sch showing 35Y4 shows 50B5 tube (the pins are different).
I think other than the antenna, the rest is fine.
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Well, with the loop still disconnected I was able to receive my local station, so the radio is functional.
Now I will probably turn the chassis 180 degrees, connect the loop and try to align.
Which brings me to asking this:
1. in the alignment they are talking of connecting the meter "between the left hand terminal (high) and center terminal (low) of the chassis antenna terminal strip".
I do not have anything like this (you saw my photographs).
What is it that they connect to? Is there anything else other than antenna contacts on that strip (for those who have it)?
2. I think I will go usual way and connect to the speaker.
3. Not sure how to couple into the loop (I got no Hazeltine loop they refer to). Will probably use some coiled wire.
(This post was last modified: 09-05-2014, 07:13 PM by morzh.)
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
Jackson 715 not working
|
Mrfixr55, its working now. I cleaned the switches and sockets with spray cleaner. Thanks for helping on this one.daveone23 — 06:26 PM |
Jackson 715 not working
|
Now that you posted the schematic, I don't know why that Sprague electrolytic cap is across the meter, as it is not indi...MrFixr55 — 05:51 PM |
HiFi (Chifi) tube amp build - but my own design.
|
What may be lacking in the PP Tube amps may be the 2nd harmonics, which some, especially RCA back in the day called &quo...MrFixr55 — 05:32 PM |
Jackson 715 not working
|
Usually in an emission tester, the tube under test is measured as if it were a diode. So, some testers connect all the g...RodB — 04:17 PM |
Restoring Philco 37-604C
|
Yep. F5 is green, D5 is Red.
Red is Bad.
Green is Clean.morzh — 01:30 PM |
Jackson 715 not working
|
I did start to do that but I stalled out because I could not figure out how the grid and plate get voltage. In this diag...daveone23 — 11:52 AM |
Restoring Philco 37-604C
|
(Insert Homer Simpson "DOPF" Here.)
When all fails, look at the can. Took the Ron Ramirez advice, red Caig D...MrFixr55 — 09:23 AM |
Philco 91 Speaker Replacement
|
From your text I am not sure if you intend to use the existing speaker with a resistor instead of the field coil.
It wo...morzh — 08:44 AM |
Philco 91 Speaker Replacement
|
My field coil is bad. I am still hoping to find an original, but if I can't I will go with a fitting Philco speaker, 125...dconant — 08:34 AM |
Philco 91 Speaker Replacement
|
As Rod said, it is OK to use a fitting speaker, and then look for an original one.
If you buy a Hammond 125 output tr...morzh — 08:15 AM |
Who's Online
|
There are currently 4003 online users. [Complete List] » 1 Member(s) | 4002 Guest(s)
|
|
|
|