[Boatanchors] boatanchor jukebox improvements

[J. Forster]

FWIW, transformers fail by overheating or insulation failure due to spikes.

To protect agaainsst overheating, I'd use a properly sized slow blow fuse
in the primary lead of each transformer to individually fuse them, NOT one
fuse for all.

A line surge suppressor will protect the transformers from a big spike.

That's all I'd do.

Best,
-John

========


 I guess a Seeburg Q160 from 1962 qualifies as a boatanchor. This
> belongs to my brother in Ohio and I am trying to get it updated for
> him. I have all the tubes needed for a complete replacement so we are
> ready if one fails.
>
> I already built him a bucking transformer/over-voltage protector to
> set the AC input to 115vac. I am going to add an inrush current
> limiter (ICL) and have added surge protection.
>
> He did some inquiries on various rebuilds and protection, and a
> gentleman offered to upgrade it for him with transformer protection
> from shorts in the control center for all transformers and the same
> for the solenoids to prevent overheating but the guy wants $350 ! I
> told him to hold off while I do some research.
>
> I have used crowbar circuits to protect the equipment from overvoltage
> in the power supply but that may damage the transformer if the line
> fuse doesn't blow quick enough. This unit has several power supply
> transformers for various sections of the unit so each should be
> protected.
>
> As far as the solenoids go, I have no clue how to protect them. The
> transformer protection, I guess, could be handled by the new resetable
> fuses in the secondary but I am sure you all can provide other
> suppositions.
>
> 73, Dick KF4NS
> St Petersburg, FL 33714 USA
> Keep The Glow!
>
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