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

Thread Closed

Custom Hammond Power Transformer
#32

Boy howdy, that’s some nice custom testing equipment! I really do need to invest in a variac. I also have a tube tester on my wish list. I currently have no way of testing tubes other than eliminating all other problems first.

I removed the bells from the transformer today, and the innards are looking more promising. I was able to clean up the two bells with the use of a couple of wire wheels. I’ve got a bigger, more powerful wire wheel on my bench top grinder, and then one which I can use on my drill. I then applied a layer of baking soda paste and let that sit for a couple of hours before rinsing and drying. Finally, I used some JB Weld Steel Stick putty to reconstruct the missing rivet holes where the transformer is riveted to the chassis. I’m letting that set for 24 hours, and then I’ll sand the putty flush to the metal and drill new holes. The bells should then be ready to repaint.

I will clean the exterior of the laminated metal tomorrow. I also need to reinsulate the wire leads. Tonight I plan to order the sleeves. The leads go into the windings of the transformer as one continuous wire; because the leads are not soldered onto terminals inside the bell, I am stuck with the original wires. But that is okay, I’ll get them cleaned up and install new sleeves.

By the way, I got a quote back from Edcor. I had reached out to them before I settled on repairing this unit. Their quoted price was even worse than Hammond’s!

Joseph

Philco 39-750 EZ
Philco 46-480
Philco 47-1230
Philco 48-482
Philco 49-906


Messages In This Thread
Custom Hammond Power Transformer - by jrblasde - 12-20-2024, 11:12 AM
RE: Custom Hammond Power Transformer - by morzh - 12-20-2024, 11:34 AM
RE: Custom Hammond Power Transformer - by morzh - 12-20-2024, 11:57 AM
RE: Custom Hammond Power Transformer - by GarySP - 12-20-2024, 12:53 PM
RE: Custom Hammond Power Transformer - by morzh - 12-20-2024, 01:45 PM
RE: Custom Hammond Power Transformer - by TV MAN - 12-20-2024, 02:44 PM
RE: Custom Hammond Power Transformer - by morzh - 12-20-2024, 02:46 PM
RE: Custom Hammond Power Transformer - by Arran - 12-20-2024, 03:36 PM
RE: Custom Hammond Power Transformer - by morzh - 12-20-2024, 05:43 PM
RE: Custom Hammond Power Transformer - by TV MAN - 12-20-2024, 06:21 PM
RE: Custom Hammond Power Transformer - by Arran - 12-20-2024, 08:43 PM
RE: Custom Hammond Power Transformer - by TV MAN - 12-20-2024, 09:10 PM
RE: Custom Hammond Power Transformer - by GarySP - 12-20-2024, 09:12 PM
RE: Custom Hammond Power Transformer - by morzh - 12-20-2024, 10:35 PM
RE: Custom Hammond Power Transformer - by Arran - 12-20-2024, 10:49 PM
RE: Custom Hammond Power Transformer - by Arran - 12-21-2024, 09:34 PM
RE: Custom Hammond Power Transformer - by GarySP - 12-21-2024, 11:01 PM
RE: Custom Hammond Power Transformer - by jrblasde - 12-22-2024, 10:46 PM
RE: Custom Hammond Power Transformer - by morzh - 12-23-2024, 02:49 PM
RE: Custom Hammond Power Transformer - by Arran - 12-23-2024, 05:48 PM
RE: Custom Hammond Power Transformer - by morzh - 12-23-2024, 08:31 PM
RE: Custom Hammond Power Transformer - by morzh - 12-24-2024, 04:49 PM
RE: Custom Hammond Power Transformer - by Chas - 12-25-2024, 12:50 PM
RE: Custom Hammond Power Transformer - by TV MAN - 12-25-2024, 04:02 PM
RE: Custom Hammond Power Transformer - by Arran - 12-25-2024, 05:31 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
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
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM

[-]
Who's Online
There are currently 2078 online users. [Complete List]
» 1 Member(s) | 2077 Guest(s)
Avatar

>