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Seeburg MRA4-L6 jukebox amp

radiotvnut

radiotvnut

Super Member
OK, so I took on my first jukebox amp repair job. Changed all the caps and now I discover that the output transformer is bad (no plate voltage on one of the 6L6's). The amp is a Seeburg MRA4-L6. I found a place online that has the transformers for $185+shipping. Does this sound like a fair price or should I keep shopping? I'm working on this for a guy and he's getting anxious to have it back.
 
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$185 each? Sounds like you can do better, but the circuit may need changed if the transformer used isn't the same as the original. You may be able to get the transformer repaired from Heyboer for less.
 
What are the mounting dimensions? You need a 4-7K primary, 25W or so. Hammond, Edcor, Triode Electronics should have something for half of that.
 
That transformer is sort of an oddball. It has two secondary windings. One is for the main 15" speaker inside the cabinet and the other one, which I believe is a 70 volt winding, is for external speakers. The primary winding also has taps for the screen grids of the 6L6's.
 
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