Re: Tektronix 2230


Hello Saroj,

Another thing popped into my mind:

Before putting the transformer back, if you have another scope and a sine generator, you could verify the fase of the windings.

And another one:

Once you are at the point of powering on again, connect a voltmeter to the first switcher to check the 43V it is supposed to generate.

It could be the first time -because of the wrong feedback signal- the voltage of the first switcher was way to high, and the scope was saved by the second regulator and the crowbar circuit.



Join to automatically receive all group messages.