Spooky2 XM signal generator dead.

[fuzzy4]

Ok, many thanks for all your help.

[stj]

well it doesnt have to be the same to function,
but ideally you want it to fit the board and poke through the case the same way.
otherwise you would have it hanging out on wires.
gotta say, finding exact match for slide switches can be hard - specially the side-angle type

if your skilled enough to desolder the old one you could clean and reassemble it with some grease inside .

[fuzzy4]

So if I wanted to replace the switch, it has to be like-for-like?
Why?

[sam_sam_sam]

Not confident in doing that, is it a bad idea to permanently connect the two terminals, so that it's always on?

Or just put an external switch and be done with it if you can find the exact replacement switch

[stj]

no problem with that at all

[fuzzy4]

Not confident in doing that, is it a bad idea to permanently connect the two terminals, so that it's always on?

[CapLeaker]

Take that switch off the board, take it apart, clean it and reassemble. Then test it before you put it back on the board.

[fuzzy4]

Yes that worked, it powers up.

[stj]

join the yellow and orange arrows in RJ's picture

[fuzzy4]

"put some solder across the switch contacts", can you explain please?

[stj]

put some solder across the switch contacts to force it on.
if that works we just need to find a switch with the same pin spacing

[fuzzy4]

Ok, changed switch to ON and I'm getting a fluctuating reading on pin 3. (Yellow arrow)

[R_J]

That voltage would be correct with the switch in the OFF position, Change the switch to the ON position and you should have +5v on your so called 3 &4 pins
The pins 1 and 4 are just the switch mounting and are not part of the spdt switch contacts

[stj]

now i'm confused, the switch only has 3 pins unless your counting the mounting lugs
but it sounds like it's powered,
so we need a higher resolution pic of the topside so i can read chip numbers

[fuzzy4]

From top to bottom, pins 1, 4 & 5 are fluctuating, 2 & 3 are ~5v

Thanks

[stj]

thats very clear tracks
so plug your psu in and meter the voltage at the switch pins to see if it switches properly.
you can get ground from the bnc sockets

[fuzzy4]

Bought standard external psu (5v 2A) brand new and tested with multimeter, so pretty sure it's good.
Yes, that's it.

[stj]

is it this?
https://www.spooky2.com/newmodel/

[stj]

external power - so is the psu good?
if it is, shoe a picture of the bottom of the board so i can see the tracks from the power inlet

[fuzzy4]

Thanks, here's a picture.