2nd IF Transformer Question
Posts: 189
Threads: 22
Joined: Aug 2018
City: Kewanee
State, Province, Country: Illinois
Good morning all, I’m working on my 60L and have been going though the transformers. Yesterday I rewound the primary on the oscillator: The antenna looked and tested great. The 1st IF tested to the specs on the schematic, but the 2nd IF tested bad unless the schematic is incorrect. It shows values of 34 ohms and 85 ohms and mine tests out at 35 and 46. Is the 85 on the schematic incorrect or is the one winding bad? If it is bad can I rewind it? If so what size wire and how many turns? Thank you!
1929 Victor R-32, 1933 60L, Phil 40-158, Phil 42-400X, Phil 47-1230 Radio/Phono,, 1950 Phil TV t-1104, Air King 4000, Philco 41-105, Philco 37-675, RCA Victor 9K2, PT-50, Phil 54C, PT-44 Cabinet, Phil 118X Cabinet
Gregg 
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
I would test it in operation prior to doing anything else. It is probably OK. They are tough to rewind.
"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
Posts: 189
Threads: 22
Joined: Aug 2018
City: Kewanee
State, Province, Country: Illinois
Thank you sir, that’s what I will do then. What symptoms would I see if it is not great?
1929 Victor R-32, 1933 60L, Phil 40-158, Phil 42-400X, Phil 47-1230 Radio/Phono,, 1950 Phil TV t-1104, Air King 4000, Philco 41-105, Philco 37-675, RCA Victor 9K2, PT-50, Phil 54C, PT-44 Cabinet, Phil 118X Cabinet
Gregg
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
It will either work or it won't. Won't meaning - No or very low level to the 2nd detector stage - unable to tune.
That kind of winding on a secondary can sometimes have corrosion problems but there isn't usually much current so they don't burn open like a primary. SOMETIMES the tuning (caps) can be the problem.
"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
Posts: 16,383
Threads: 573
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
It is rarely n RF coils that there's continuity and it is bad.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Posts: 189
Threads: 22
Joined: Aug 2018
City: Kewanee
State, Province, Country: Illinois
Ok, sounds good. I’ll see how it does once I get it all back together. Thank you both for your input.
1929 Victor R-32, 1933 60L, Phil 40-158, Phil 42-400X, Phil 47-1230 Radio/Phono,, 1950 Phil TV t-1104, Air King 4000, Philco 41-105, Philco 37-675, RCA Victor 9K2, PT-50, Phil 54C, PT-44 Cabinet, Phil 118X Cabinet
Gregg
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Philco 46-480 Electronic Restoration
|
| I forgot to make mention of it the other day, but last week I corrected another error on my schematic (applies to both R...jrblasde — 09:27 PM |
|
Gloritone 27 Radio
|
| I have a model 27 that someone painted the cabinet brown. I've been trying to sell it for awhile but the cabinet paint m...Jim Dutridge — 02:30 PM |
|
Restoring Philco 96
|
| Joseph
Yeah. The situaction is complicated by me living with my family in NJ while mom is in FL.
Were it not for my ...morzh — 10:55 AM |
|
Restoring Philco 96
|
| Best of wishes for your mother. I hope she recovers well. My mother struggles with sciatic pain as well, so I am familia...jrblasde — 10:41 AM |
|
Restoring Philco 96
|
| Well, because I am away, I cannot check it. Hope mom becomes better enough for me to get back.
I think I will be here f...morzh — 10:27 AM |
|
Restoring Philco 96
|
| Nice find! I hope it completes your console.jrblasde — 08:45 AM |
|
Gloritone 27 Radio
|
| Hello john,
That, is the first time I have have seen or heard of that brand and model.
Welcome to the party !!
Sincer...radiorich — 08:08 AM |
|
370 Norman Bel Geddes trim pieces
|
| Thank you! I’ll probably use the half-round molding and tone it to match the original. Thanks for the replies!Max T — 06:34 AM |
|
Gloritone 27 Radio
|
| I'm kind of late to this thread, but Buzz1151 has a 3 part restore series on the model 27:
A little bit of extra t...Eliot Ness — 05:48 AM |
|
370 Norman Bel Geddes trim pieces
|
| You can get half-round moulding in various diameters at any home improvement store. That way the flat edge is uniform. ...GarySP — 12:03 AM |
|
Who's Online
|
There are currently 1739 online users. [Complete List]
» 1 Member(s) | 1738 Guest(s)
|
|
|
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
