Hello I was told this is the place to be for asking questions about Tektronix scopes.
I rescued a 465B from ebay that showed no trace. When it arrived I was able to get a trace to show just by adjusting the controls. The only issues I can see are a thick trace and a sensitive intensity knob. Although, Having messed with the scope for a few weeks I think the intensity works as it should. Being my first Tektronix scope I started a post on the EEV blog hoping to find more info on repairing it. The kind folks over on the EEV suggested I join the TekScopes group. I am very impressed with this group and how active it is!
Currently I'm starting to suspect the CRT is faulty on this scope.
I have tested the power supply for voltage and ripple. Found a beautiful triplett 630-na to test the high voltage. The tek manual recommended it and I thought it was a great excuse... I mean... a good idea to use the recommended equipment. ;) The HV tested spot on. Tested focus voltage and it seems ok. I also checked all the other lv connections to the CRT for voltage and noise. I also probed the horizontal and for noise.
How can I eliminate the vertical section as the fault? Is it safe to just disconnect the vertical connections?
Also I did read somewhere in the TekScopes group about shorting the vertical connections with a capacitor but I could not find anymore info on that.
I'm just a self taught hobbyist and I've been taking my time. ^-^
EEV post Tektronix 465B Focus Issue - Page 1
Tektronix 465B Focus Issue - Page 1 Tektronix 465B Focus Issue - Page 1
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