| Electronics > Repair |
| HP-8569 Spectrum Analyzer Repairs |
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| AF6LJ:
--- Quote from: tautech on April 28, 2017, 01:07:43 pm --- --- Quote from: AF6LJ on March 21, 2017, 03:24:33 pm ---Since the freely available manuals online were garbage, to put it nicely, I want to Artek Manuals http://artekmanuals.com/ and picked up the three volume set for a very reasonable price (under $20.00USD) and received a wonderfully scanned manual set. These guys are great and the price is so reasonable.... --- End quote --- Yep you can't beat a hardcopy for a job like this. Remember you talking about these coming up and don't know how I missed it. ::) Following..... --- End quote --- I wish I had a hard copy, I bought a good scan of all three manuals, and it is almost as good with the benifit I don't have to figure out where to lay the manual while I work on the thing. |
| AF6LJ:
--- Quote from: KD0CAC John on April 28, 2017, 01:19:24 pm ---Hay Sue , I have 3 of the HP 8640B's and have the stake type sw. also and plan on touching up with a little epoxy to prevent loss . Thats aside from buying used / supposed working , no output - just another project added to pile . Nice repair post . John KD0CAC --- End quote --- My goal is to have two of these 8640s there are good reasons to have two... Then again, one of my favorite boat anchor HP sig gens....... And it really is a Boat Anchor is the HP-8660, a real classic in the synthesized signal generator category, and most likely a career keeping one running. :D |
| KD0CAC John:
Forgot to mention , 2 of the 8460's were parts units , the 3rd was sold a good but no RF output , in the 1st page of testing the meter shows voltage , but once the manual switches to RF AM , FM then there is no meter movement . Thanks for the link to manuals , was able to find one I need - IFR A7550 , that was also sold as working & is not , so have the manual coming . |
| AF6LJ:
The resolution bandwidth / frequency span switch issue is fixed, moving on to attaching the knobs and with any luck tomorrow I will have a working spectrum analyzer on my bench.... Then I will move on to the tear down and inspection before power up. |
| AF6LJ:
--- Quote from: KD0CAC John on April 28, 2017, 07:28:53 pm ---Forgot to mention , 2 of the 8460's were parts units , the 3rd was sold a good but no RF output , in the 1st page of testing the meter shows voltage , but once the manual switches to RF AM , FM then there is no meter movement . Thanks for the link to manuals , was able to find one I need - IFR A7550 , that was also sold as working & is not , so have the manual coming . --- End quote --- I think having an HP-8640 parts mule or two is a good idea. |
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