Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Cannot Adjust an IF Transformer’s cores
#1

Good afternoon, folks:

    I am restoring a Philco 49-906 and have run into a minor roadblock. Namely, I cannot align the FM circuit in full because the screws to adjust the first FM IF transformer are stuck in place. Peering into the top hole, it looks like the screw head is stripped. Has anyone run into this before, and how have you resolved it? I can imagine I need to desolder and remove the unit, open up the can, and somehow file a new flat-head groove into the screw head. Has anyone worked out a less invasive solution?

This is a Philco 32-4257 part (first FM IF can, 9.1MHz) and is labeled as TC-300A and TC-300B on the schematic.


Messages In This Thread
Cannot Adjust an IF Transformer’s cores - by jrblasde - 07-25-2024, 04:59 PM
462ron - by 462ron - 08-01-2024, 07:33 AM
462ron - by 462ron - 08-01-2024, 08:44 AM
462ron - by 462ron - 08-02-2024, 08:09 AM
462ron - by 462ron - 08-03-2024, 07:49 AM
462ron - by 462ron - 08-04-2024, 08:15 AM
462ron - by 462ron - 08-08-2024, 08:02 AM
462ron - by 462ron - 08-10-2024, 08:33 AM
462ron - by 462ron - 08-10-2024, 09:38 AM
462ron - by 462ron - 08-12-2024, 07:42 AM
462ron - by 462ron - 08-25-2024, 08:27 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind, even if it's a U.S.N power supply. I have a book somewhere abo...Arran — 02:56 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
hello david, I have a similar generator in my collection that features a cast iron, single-cylinder Briggs & Stratt...radiorich — 01:00 AM
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM

[-]
Who's Online
There are currently no members online.

>