06-07-2026, 04:20 PM
(06-07-2026, 12:34 PM)ppppenguin Wrote: I'm being daft. I didn't notice that the switchmode is fed by 24V from a double wound mains transformer. Hence no need to keep hands away from rectified mains. Still plenty that can bite, including a 1500V supply that probably supply enough current to hurt.
I looked at a Philips scope with an exploded Rifa and blown thermal fuse on the transformer. A bridge rectifier that fed the SMPSU had melted the solder and fallen out! The transformer was OK.
At that point (at a friend's house) I said, "unless you are giving it free to me I give up".
