I recently bought a bemaster 4000 that worked when tested with my beovox 3800s. After changing the voltage output i managed to blow the fuses

Is it likely that that channel is short circuiting or likely that changing the voltage output has blown the fuses? Also where do i find the correct fuses for the 4000?

look forward to a reply many thanks 

Ross

Welcome to Beoworld !

Did you change the mains voltage setting (the rotary switch)?
And if so, did you do it while the Beomaster was switched on ?

The fuses are of the standard 5x20mm glasstube type. Available from almost
anywhere.

Martin

thanks for the reply 

I think i might have been stupid enough to have switched the rotary switch while on.

I would still need the correct 2,5amp anything lower or higher wouldn't work would it?

Ross

Yes to the first and no to the second.
Yes, you need the correct fuses and no, nothing else will be recommended.
You should be able to find some at almost any electronic parts store (or Ebay),
I may also be able to supply them if everything else fails.
Try locally first, that will save you the postage.

I would also recommend a quick check inside with a multimeter to see that
nothing else got damaged.

You already found this out, Ross, but for other Beoworld visitors, I would like to make it very clear
that adjusting the mains voltage setting switch should be done ONLY with mains disconnected.
Depending on model and version, f.e. going from the 220V setting to the 240v setting
sometimes involves passing the 110V setting which will most definitely kill something in the set.
Check fuses, transformer, rectifier(s) etc.

Martin