It’s so crazy, that’s still a $40,000-$70,000 Spectrum Analyzer. Not just anyone is going to take on a piece of kit like that. You do excellent work and explain it well. thanks for the video.
Always enjoy your repairs bu this one even more becaise of the initial transistor repair. I did a similar one on my HP 8350 regulator board since i did not want to take it apart but always considered a noob lame repair. Thanks
I've had an interest in electronics for most of my life. Being raised in a lower middle-class family, i didn't have the means to let the hobby really take off. But as an adult i've had the chance to start putting some money into it. I just bought my first scope not long ago. I have a rigexpert AA-600 for my antenna tuning. And some other odds and ends on my tiny little work bench. I'd give body parts to own some of the equipment i see people working with on youtube. Especially the high end "costs as much as a car" kind of equipment. I'll never be able to own stuff like that.
yes please part 2 -- great repair, good to know that the attenators are sometimes repairable. I assume someting in the YIG YTF after the RYTHM switch because it disappears at 2.85GHz (assume) till half of the spectrum width e.g. 26ghz. The SBTX Path for >26Gz till 50 Ghz path seems to work.So could be the YIG preselector or the follow up mixer. with 3-7GHz LO , also that could be a problem. So measure at coax W17 first.
Great work, but it seemed that this is the problem of power supply. Yes, I also thought that the attenuers would not repair. Thank you. I'm waiting for the second part.
Attennutator problems are the best problems to fix. :) I cleaned the attennuator pads on my 8566B, then it was just like new. One of the common problems of the E4406A and E4448A series is that the CCFL tube backlight dims and the light diffuser panel behind the LCD turns to yellow. You can order new CCFLs for a few dollars and do a replacement, it is worth it. Screen becomes much brighter. Or as an alternative you can connect to an external VGA display and have a much better picture, but mine radiates around -80db at 72 Mhz, and it becomes visible on the analyzer.
We have a couple spec-ans at work that are similar and failed calibration on certain bands, I have a feeling they've got similar issues to this one. I am definitely not allowed to open them to try to fix them though xD
OMFG!!! I actually understood 100% of this video on the first pass!!! Normally I have to pause / rewind / rewatch a few bits to give my brain time to 'catch up', but not this time... Either I am learning more, or Shahriar is slowing down as he gets older...
Wow 50Gig! Where did it come from... how much did it cost?. How lucky was that find... Anyone else it would be junk because we wouldn't have a chance of fixing it.
These are the type of videos I really enjoy watching.
It’s so crazy, that’s still a $40,000-$70,000 Spectrum Analyzer. Not just anyone is going to take on a piece of kit like that. You do excellent work and explain it well. thanks for the video.
HP 8566&8568 is $500 on ebay with a little luck, nowadays.
Plenty enough for most simple tasks
One of the best channel for great learning 🎉🎉🎉
This is a bit above my head, but it is a lot of fun to watch someone who knows what they are doing working on such specialized equipment.
Always enjoyable to watch your analysis to find the fault. Incredible skill required to fix and re-assemble the attenuator.
My favorite type of TSP video. Thanks for posting this.
Excellent video.
Thanks for posting it.
Always enjoy your repairs bu this one even more becaise of the initial transistor repair. I did a similar one on my HP 8350 regulator board since i did not want to take it apart but always considered a noob lame repair. Thanks
Another Great Video... Looking forward to Part 2, the hard part. ;)
The repair steps seem very clear, organized and logical until you try it yourself 😨
I've had an interest in electronics for most of my life. Being raised in a lower middle-class family, i didn't have the means to let the hobby really take off. But as an adult i've had the chance to start putting some money into it. I just bought my first scope not long ago. I have a rigexpert AA-600 for my antenna tuning. And some other odds and ends on my tiny little work bench. I'd give body parts to own some of the equipment i see people working with on youtube. Especially the high end "costs as much as a car" kind of equipment. I'll never be able to own stuff like that.
Nice, finally one where it's not just a dead LDO somewhere, yet you managed to get somewhere without any special parts
Your happiness is contagious. Good job! 👍
yes please part 2 -- great repair, good to know that the attenators are sometimes repairable. I assume someting in the YIG YTF after the RYTHM switch because it disappears at 2.85GHz (assume) till half of the spectrum width e.g. 26ghz. The SBTX Path for >26Gz till 50 Ghz path seems to work.So could be the YIG preselector or the follow up mixer. with 3-7GHz LO , also that could be a problem. So measure at coax W17 first.
I agree! Thanks :)
I'm not smart enough to have any suggestions, but I love these videos! 😀
Great work, but it seemed that this is the problem of power supply.
Yes, I also thought that the attenuers would not repair.
Thank you. I'm waiting for the second part.
Attennutator problems are the best problems to fix. :) I cleaned the attennuator pads on my 8566B, then it was just like new. One of the common problems of the E4406A and E4448A series is that the CCFL tube backlight dims and the light diffuser panel behind the LCD turns to yellow. You can order new CCFLs for a few dollars and do a replacement, it is worth it. Screen becomes much brighter. Or as an alternative you can connect to an external VGA display and have a much better picture, but mine radiates around -80db at 72 Mhz, and it becomes visible on the analyzer.
Very interesting video. Please, continue.
Two more parts please, with more details :)
The one who sold the analyzer and watching this video is banging his head against the wall.
tnx Shahriar, is there any troubleshooting checklist in your mind that you can share for diagnosing devices such as an oscilloscope
50GHz analyzer? Alien tech if you ask me :D
We have a couple spec-ans at work that are similar and failed calibration on certain bands, I have a feeling they've got similar issues to this one. I am definitely not allowed to open them to try to fix them though xD
👍👍
OMFG!!! I actually understood 100% of this video on the first pass!!! Normally I have to pause / rewind / rewatch a few bits to give my brain time to 'catch up', but not this time...
Either I am learning more, or Shahriar is slowing down as he gets older...
Wow 50Gig! Where did it come from... how much did it cost?. How lucky was that find... Anyone else it would be junk because we wouldn't have a chance of fixing it.
At 2:31 there is a rectangle on the left under the symbol of C5. What does this rectangle mean?
It’s a three terminal tantalum capacitor. It just says two of its terminals are connected to ground.
Nice one as always! But.... Pooch is getting old :(
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