[sdiy] Elektron

[Byron G. Jacquot]

>Hi everybody !
>I've just bought an Elektron Machinedrum sps 1 ( first generation).
>The friend who sold it to me tested it before shipping, and it was
>working.
>Once i tried to plug it, it never started. I fisrt thought it wa sue
>to the external power supply ( it should give a 6v AC out), but no..
>except if 7,23v AC out is too bad..
>So i opened my sps1. The fuse is ok, the power connector also.. i can
>get my ac voltage at the fuse output.
>After that.. nothing. There are many regulators, but for most of them
>i can't figure how they work. I've just check a lm7808 and a lm317
>that don't deliver good voltages..
>And visually, no component seems to have burn..

There's likely nothing wrong with the AC supply.

External transformers are usually rated to deliver the stated Voltage at the stated current.  If you draw less current, the Voltage will be somewhat higher...7.23 seems about right for a 6VAC supply.

It's also pretty unusual that all of the voltage regulators would fail at once.  I'd suspect something that's common to all of them.  How are you measuring them?

If it was just shipped, perhaps a connector slipped out of place?

-Byron Jacquot