Re: Tektronix 545 Oscilloscope fault
Yes, the Avo will do for voltage testing. Don't start checking valves until we've figured out what the fault is, and definitely don't start changing capacitors whatever you do. There are dozens, if not hundreds, of them in this machine, and in my experience they're very high quality. I have two Tek scopes of this vintage (a 535A and a 549) and they're both working well with all their original 'Dubilier' capacitors. I hear that the Tek scopes built in the US use 'bumble bee' capacitors which are notorious for going wrong, but most of the ones in the UK were built at the Guernsey plant and used different components which don't fail in the same way.
Chris
|