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Rockola 1422 O-Amp problem



 
 
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  #1  
Old August 13th 17, 07:14 PM posted to alt.collecting.juke-boxes
ILikeValves
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Posts: 9
Default Rockola 1422 O-Amp problem

I have recapped my O amp on my 1422.
The 5U4 tube has a lot of sparking inside the tube.
I have tried other 5U4's, and the same thing happens, even without the other tubes, and no input/output plugs (I jumped the ac on the speaker receptacle.)

I have tried double and triple checking, but I cannot find a problem.

Does anyone have any suggestions on where to look?

Thanks
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  #2  
Old August 13th 17, 11:23 PM posted to alt.collecting.juke-boxes
John Robertson
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Posts: 901
Default Rockola 1422 O-Amp problem

On 2017/08/13 11:14 AM, ILikeValves wrote:
I have recapped my O amp on my 1422.
The 5U4 tube has a lot of sparking inside the tube.
I have tried other 5U4's, and the same thing happens, even without the other tubes, and no input/output plugs (I jumped the ac on the speaker receptacle.)

I have tried double and triple checking, but I cannot find a problem.

Does anyone have any suggestions on where to look?

Thanks


Short on output of 5U4 filament output B+ load - a bad cap, etc. You
will destroy the transformer if you do not find the problem!

John :-#(#

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  #3  
Old August 14th 17, 09:26 PM posted to alt.collecting.juke-boxes
ILikeValves
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Posts: 9
Default Rockola 1422 O-Amp problem

On Sunday, August 13, 2017 at 11:14:38 AM UTC-7, ILikeValves wrote:
I have recapped my O amp on my 1422.
The 5U4 tube has a lot of sparking inside the tube.
I have tried other 5U4's, and the same thing happens, even without the other tubes, and no input/output plugs (I jumped the ac on the speaker receptacle.)

I have tried double and triple checking, but I cannot find a problem.

Does anyone have any suggestions on where to look?

Thanks



Will Look at that, and prob start to disconnect leads. Tnx
 




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