Products > Test Equipment

Teardown, Repair & Upgrade of an Agilent E4405B 13.5GHz ESA-E Spectrum Analyzer

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Hugoneus:
You can watch the video here: [39 Minutes]
youtu.be/3R0txBEIvjQ

More videos at The Signal Path:
http://www.TheSignalPath.com

HighVoltage:
Another nice repair video from you, thank you.
Thank you for teaching us!

I am not sure if I like your modification to LEDs for the LCD light or may be it is just the camera that does not show it correctly.
It just does not look evenly bright.

A few back light repairs I did, had better results, when I stayed with replacement tubes instead of LEDs


 

Hugoneus:

--- Quote from: HighVoltage on September 18, 2017, 06:41:03 pm ---Another nice repair video from you, thank you.
Thank you for teaching us!

I am not sure if I like your modification to LEDs for the LCD light or may be it is just the camera that does not show it correctly.
It just does not look evenly bright.

A few back light repairs I did, had better results, when I stayed with replacement tubes instead of LEDs

--- End quote ---

It is actually pretty bright in person. The camera was on auto gain and it was hard to tell the result from that.

bjcuizon:
Thanks for another great video Shahriar, I enjoyed it all throughout. :)
What video no. is the repair for the other model? I cant seem to find it.

EDIT: Doohh, I already found it. Thanks.

suj:
Thank you Shahriar  :-+ . I was looking for a spectrum analyzer that supports harmonic mixers. I found E4407B with AYZ option that someone wanted to sell with the "LO unlock" error. Three hours with youtube  :popcorn: and your two episodes about ESA-E and I was sure I could do it. I have other spectrum analyzers, 85024A probe, generators, VNA etc but I have not bought broken measuring equipment before.
The same day when I ordered this E4407B, I also ordered CLIP manual for ESA-E and HMMC-3124/1GC1-4207 :4 frequency divider (I found in China).
The first came E4407B. In my case, the divider lost its signal if the LO frequency was greater than 6 GHz. I also had to replace the M4T28B Timekeeper battery and the volume knob were missing. I found the battery and the gray knob locally. Today a parcel with a divider chip arrived. A large hot air blower was needed because the hot air from my soldering station could not warm up enough. The effect is easy to predict. The next ESA-E had :4 damaged divider and has been repaired (+1 for statistics). My new chip is not signed with the Agilent name (probably Avago production) and I hope it will live a little.
Shahriar, you are the man!  :-+ :-+ :-+

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