Welcome to Beoworld ! The Beocenter 3500 is a lovely machine, built like a tank. A mouse may be able to enter the Beocenter somehow but how it can get to chew on the mains transformer is hard to understand since the transformer is cast into a very sturdy metal cabinet within the Beocenter. Hard to access even by humans. Are you sure that it is the mains

Probably the fuse for the lower voltage power supply. If so, check capacitors, especially C1 (3300uF), on module 16 (voltage regulator). Very often found shorted. Martin

Welcome to Beoworld ! Will it go into standby when mains is applied ? Martin

Wonderful thread ! Aren't there some kind of orange/red pinstriping that can be used directly ? Martin

What are the symptoms ? If one channel is missing, try mounting the cartridge upside down. Press play, touch the needle tip gently with a finger and listen. If sound is now missing in the other channel, the cartridge is bad. If sound is still missing in the same channel, the cause is not the cartridge but more likely a broken solder joint inside the

There is no groove in the original windows. Martin

Wow Geoff, looks very nice indeed ! Martin

Oh yes. And the "ON" lamp lens too ? Martin

- Because of the way the speakers are constructed. The resulting impedance of the drivers and filters varies with the frequency (and theoretically also amplitude) so it's impossible to give a firm value without listing a lot of other parameters. - Because in most cases it's not needed, even if using two pairs in parallel. Most amplifiers will

I agree, finding new ones is impossible but depending on how yours look, it may be possible to find better used windows. Can you post a photo ? Martin