Cambridge Audio A500 Amplifier problems!

[Mark Hennessy]

As previously noted, none of the internal fuses have failed, so the cause of the TX failure is, for the moment, puzzling.

I suppose the transformer might have failed by itself. It can happen - I've had a couple of random failures (good torroidal transformers, bought from Farnell, and not overloaded at any time). Of course, here is where a dual current-limited bench PSU is handy. You can never have enough power supplies - I've made loads over the years, and collected a fair few as well. But I digress...

BTW, Mark, R267 is 47K, not 47 ohms( a 'typo' no doubt!)

That's a worry. Makes you wonder what other mistakes could be in that manual?

I'll be interested to hear how you get on. Good luck

Mark