Re: Repairing my Tektronix 454 oscilloscope need some advice

Albert Otten


Just to be sure, did you test the fuse F1437 or the voltage across C1437. Also did you test as far as possible the driver transistor Q1430? Q1430 is not in the HV box. I think B, E and C can be reached between the back panel and the HV box.

Recently there were very long discussions here concerning 454 HV problems.


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