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

Thread Closed

Suggestions, please (Majestic Model 20)
#1

I'm down to trying to restore my Majestic 20 chassis. I spent two days piecing the cabinet back together (it came as a 3-D jigsaw puzzle, thanks USPS). Fortunately, the speaker is in near mint condition.

I got a new power transformer for the set, a perfect fit, and have finally tracked down all the parts that are inside those lovely "black boxes".

Most of the repairs look like they will be pretty easy, but I do have a question that I hope someone here can answer for me:

What can I use to replace the "power detector"/audio driver transformer? I have a couple transformers that work in older TRF sets, but this set doesn't use a first audio amp: it drives the output tubes directly from the 27 detector. The plate voltage on this tube runs to 255 volts, almost 5 times the normal plate voltage for a detector tube, and its resultant higher plate current.

Does anyone have any suggestions re this? Or is there a chance that one of the old TRF driver transformers will work?

Thanks in advance.


Messages In This Thread
Suggestions, please (Majestic Model 20) - by BrendaAnnD - 04-01-2013, 11:25 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM
Preliminary work on wife's Silvertone 2014
Safety caps arrived today.  Soldered one in and had a successful first power-up.  No magic smoke escaped and it tunes in...glyphmon — 09:53 PM

[-]
Who's Online
There are currently 1562 online users. [Complete List]
» 2 Member(s) | 1560 Guest(s)
AvatarAvatar

>