Does anyone have any suggestions or advice about 8566B repair? I've had an 8566B for 7-8 years, it's been a faithful tool, never had a problem with it. It's reasonably clean unit that's never seen a tough life. It sits in the storeroom 90% of the time and is on my bench maybe 10% of the time.
So, this week, after a 4 month hiatus, I've been using it on the bench and it starting producing a "YTO UNLOCK" message, the trace seems to basically work properly but is clearly unlocked and the trace will randomly slide to the left or right. The Yttrium oscillator is clearly unlocked. I'm hopeful that the problem is in one the control loops outside the oscillator module. I read the repair guide that Agilent kindly keeps on their website, they have some good instructions and narrow the problem to 3-4 modules, but I've never opened up the instrument and am a little apprehensive about making things worse. My hunch is that the problem is an electrolytic cap that has dried out over the years and has failed. Any suggestions for either self repair or outside repair and re-calibration is appreciated... In full disclosure, I also have a 70908A based spectrum analyser that that has much better specs, especially in microwave. It can completely replace the 8566B, but I'm quite fond of the 8566B, I can operate it blind folded, it's like an old friend and I would really like to fix it. jeff _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.