CHAMP ELECTRONICS -" THE VINTAGE VALVE AMP HOSPITAL"

NOTTINGHAM, ENGLAND

SERVICING OF A CARLSBRO CS60 PA Mk II AMPLIFIER



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Very similar to the Mk1, the chassis is now mounted at the bottom of the case, upright; as-opposed to upside-down plus, the addition of coloured smartie knobs.


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Most of the coloured smartie knob centres were missing on this one. I replaced them all……of course!


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A new pair of JJ EL34’s [E34L’s] always do the trick when output tubes are pretty well worn!

 

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Finished and on a final test-gear check-up.





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These non-PCB type of boards are about a “half-way-point” between a real PCB and (or) the turret/tag board way of wiring. However, with an overkill of soldering/repairs etc; too much solder can cause Stalagmites (or should that be Stalactites?). The whole board was of course all cleaned-up and re-soldered accordingly.





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Side view of same board removed.





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Things all back in-place.





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As some previous technician had at some point not replaced the mounting screw at the end of the board, it had of course “been flapping around in the wind”! This eventually caused it to crack right across the underside print, as can be seen here! This, without hesitation, was of course sorted and secured correctly!




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Whoops! A leaking cap! Yes, this got replaced too!








 

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