¿ªÔÆÌåÓý

Re: 431B Power Meter Repairs


 

Addendum: I'm also pretty certain there is at least one bad germanium transistor (maybe Q109) in the 10 KC amplifier/oscillator circuits. The manual indicates that the waveform should be sinusoidal with some crossover distortion...and it's pretty much anything but sinusoidal. It goes crazy when the range is switched out of null too.

Sean

Join [email protected] to automatically receive all group messages.