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Old 27th Jan 2019, 3:50 pm   #2
6AL5W-Martin
Hexode
 
Join Date: Nov 2006
Location: Biedenkopf, [Hessen], Germany.
Posts: 425
Default Re: Tektronix 585A issues.

hello Andy,
I think that must be one of the electrolytics, a isolation fault inside.
This must not be defective in test with ohm meter, but when the high voltage is present it do short.. How you have tested them, and are you very shure you have tested them all?

the area of +325V is the most powering there, it can blow out the general fuse.
The best idea is, to use a tubes PSU in series with a bulb of 20 Watts and check one by one the disconected electrolytics. One of them will be bad and the light goes ON ..

Martin
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