Club 80-90 Forums

My zig unit buzzes when its plugged into the mains!

Damned annoying!

I've had it apart and looked at all the bits and bobs to see if anything is loose, but its all rock solid. Any ideas?

The transformer laminations are probably comming apart. Nothing you can do to fix em.
Likely cause is overheating due to overload, lack of ventilation or leaving it on too long.
(Or just crap design / build)

T

if its bugging you that much you could replace it from somewhere like maplins or rs components its only pop riveted into the case and 4 wires.

It starts buzzin' as soon as its plugged into the mains, so I dont think its overheating... or at least its not overheating now - who knows whats happened in its long and varied history?

So... replacing the transformer... thats the big wirey thingy in the middle?

If I take the old buzzing one into Maplins or wherever, will I/they be able to tell whats a suitable replacement?

Cheers,

have a look on their website first so you can get an idea of what you are after

thats the big wirey thingy in the middle?

I think maybe you need to be a little more certain before messing with 240V supplies What you are hearing is 50 Cycle hum, I think its unavoidable just to what degree it occurs possibly one of these
http://www.maplin.co.uk/Module.aspx?Mod ... &doy=16m12
if its a self build maybe put a RCD in there aswell if you haven't got one already.

Or maybe replae the whole unit?
http://www.campingstore.co.uk/prodDet.c ... lack_Face/

Ooh, that's the fella!

That would seem simplest, and less likely to explode my van

Yup, I'll stick a new one in.

Thanks for that.