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| HP 8569B - How to engage or fix Resolution Bandwidth control |
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| pfm:
I found this in the Service manual parts list. Could this be the RBW rotor ? Has anyone tried sourcing it ? From Agilent Keysight or any surplus contractor ? |
| AF6LJ:
That is it and you can go to the Keysight website and see if they have any in stock. There is a search page there you can plug in the part number. |
| pfm:
! I FIXED IT ! I tried hard but I could not find the spare anywhere. However, by just sheer stroke of luck I found someone selling this stash of rotors on ebay! Not all were in usable condition but I did manage to salvage a few. The one thing different about my repair story is that I did not disassemble so extensively. I just unscrewed the small pcb and flipped it on its side and I had full access to the rotor. It was all over in a matter of 2-3 hours. One interesting thing I did not realize until later is that the resolution bandwidth rotor has only one of those metal hand/fingers while other switch rotors have a set of two. And yes I did find the missing one lying on the bottom cover. Its working great now! Anyone want this unit let me know I am going to sell it to make room for something else. P.S: If anyone wants the rotors let me know I can spare some for your personal use. |
| AF6LJ:
Good Deal! :) |
| NateOcean:
--- Quote from: pfm on March 30, 2018, 03:26:25 pm ---! I FIXED IT ! ● ● ● P.S: If anyone wants the rotors let me know I can spare some for your personal use. --- End quote --- I could definitely use a single one of the 4-finger metal contact tabs! (I haven't heard back from the poster (pfm); anyone have an alternate way to message him? The email icon doesn't seem to work.) |
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