Home  Resources  References  Tubes  Forums  Links  Support 
Majestic 90-B problem
9/14/2009 2:52:01 AMJohn.
I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?

Thanks,
John

9/14/2009 3:09:54 AMWarren
Here is a link that has the schematic for your model 90B Majestic.

http://techpreservation.dyndns.org/schematics/Majestic.htm

If you are new to repairing radios, you may have to start off with the most simple of things. Open Coils can be tested with an ohm meter for continuity. Open volume control too, transformers, and even the speaker. B+ voltage can be measured with the same Volt Ohm meter. Just because the tubes light up, only means they do. Post what you find after some testing. I am sure you will get more help after at least that.

9/14/2009 3:35:16 AMG. berg
Open coil...bad resistor...or inside the volume control (where lugs come in contact with resistance strip) may be corroded...cold be many things...

:I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?
:
:Thanks,
:John
:

9/14/2009 4:04:39 AMJohn
I have tried to connect the two wires going to the volume control together to complete the circut and still nothing so I would think that would eliminate a faulty volume comtrol. Let me know of some other things to check. I have replaced tubes and capacitors in radios before but this is the first time I have went this deep into tracking a problem. So please work with me and I will post my findings.

:Open coil...bad resistor...or inside the volume control (where lugs come in contact with resistance strip) may be corroded...cold be many things...
:
::I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?
::
::Thanks,
::John
::
:

9/14/2009 10:27:56 AMDoug Criner
John, what is called for here is systematic troubleshooting. That usually starts with checking all the voltages at the various tube socket pins, and comparing to the schematic or to the typical vlotages specified in a tube manual. It is usually counter-productive to take stabs, one at a time.

This may not be the best set to learn troubleshooting with.
Doug

9/14/2009 10:35:32 AMNorm Leal
Hi John

Majestic used a 5 section pot metal tuner. Over time it can warp and plates will touch. This will stop reception. Be sure plates don't short.

Norm

:John, what is called for here is systematic troubleshooting. That usually starts with checking all the voltages at the various tube socket pins, and comparing to the schematic or to the typical vlotages specified in a tube manual. It is usually counter-productive to take stabs, one at a time.
:
:This may not be the best set to learn troubleshooting with.
:Doug
:

9/14/2009 1:16:46 PMMarv Nuce
John,
My 90B had an open field coil, (which I rewound), and an open wire wound cathode resistor in the PP outputs,(which I patched back together) Good luck

marv

:I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?
:
:Thanks,
:John
:

9/14/2009 3:32:14 PMG. Berg Transformers
John.. I have restored MANY Majestic radios from this era. Most of the time it is a bad audio trnsformer... It is sealed in tar and will come off the 45 tubes. I left my email you can contact me there if you wish. Would be glad to help you..


:John,
:My 90B had an open field coil, (which I rewound), and an open wire wound cathode resistor in the PP outputs,(which I patched back together) Good luck
:
:marv
:
::I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?
::
::Thanks,
::John
::
:

9/14/2009 5:19:37 PMG. Berg YOUR IN LUCK
I have the Majestic 90B chassis for parts ..Let me know if you want parts...Way to heavy to ship whole thing.

:I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?
:
:Thanks,
:John
:

9/17/2009 6:56:21 PMg. berg John
Would you liek any party off this chassis? Otherwise i am going to give it away at local swap meet...let me know....Resistors, pots, coils????

:I am not getting any volume out of this radio. I just got the radio and the volume control was loose on the chassis and the 2 wires that go to it had came loose because of the loose control. I resoldered the wires and still nothing. All of the tubes light up. I am stumped What do I check and where do I begin?
:
:Thanks,
:John
:



© 1989-2025, Nostalgia Air