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Skip to content I recently bought a used Agilent power supply in a very sad condition. After it is loose the cover tilts forward and is easily removed. After the knob is pulled off the front the dark cover needs to be removed. A couple days later I had a new rotary encoder ready to be installed. Ships in weeks. It does have two speeds loud-ish and louder? Rent From Transcat Do you need a test instrument for a short time?

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Keysight Agilent EA DC Power Supply | Transcat

I recently bought a used Agilent power supply in a very sad condition. You must have JavaScript enabled in your browser to utilize the functionality of this website. There are three clips xgilent the top which can be accessed from the inside. After doing a little research I found that it was a known issue for the rotary encoders in these power supplies to fail.

The e3460a encoder worked perfectly and made the supply work like new. I also made sure to order a new knob to replace to old grungy one to complete my work on the supply. Transcat makes it easy: Request a Calibration Quote Transcat can calibrate your existing instruments. This agildnt is available for shipping to United States and Canada only. Request a Rental Quote.


Because the knob is the main method of user input other than RS or HPIBit made the e36400a supply agilebt impossible to use. Request a Calibration Quote. Keysight BenchVue software for the PC eliminates many of the issues around bench testing.

Since the repair I have been using the power supply for a little over a week and I have had no issues whatsoever, and I am very happy how it turned out. After removing a couple of screws the whole inside of the power supply slides out the front. The power supply started up perfectly the first time and I made sure to run the self test afilent just in case.

The whole board will then slide over to the right in this picture and is easily pulled out. The underside of the board has some giant copper traces, and a large portion has the silkscreen removed and has been tinned. The picture above is the new encoder from Agilent.

Fortunately Agilent has an online shop that supplies many wear-and-tear items r3640a their various products. Finally on the other side where the PCB is the tab routed in the board needs to be lifted gently with a small screwdriver until it clears the white plastic tab. After cleaning the grime off the front panel abilent removing the marker from the case I coerced the E into running a self test which it passed without hesitation.

Other than that there are a lot of passive components and a MOV soldered on near the output. It is also the same encoder used in many different Agilent products.

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If you forget to remove these the PCB on the other side will not be able to be removed. This lead me to believe that the only issue zgilent this power supply was that the rotary encoder was on its last legs.


Would you like this item calibrated? The over voltage features as well as the programmability of the supply both checkout out as well.

Showing Results for Keysight Technologies (Agilent HP) E3640 Series – 30-80W

I made sure the holes had minimal solder before pressing the new encoder into place and soldering. Accredited Calibration with Data. I cleaned up the flux left over with a little rubbing alcohol and put everything back together. The fan towards the center draws air in from the sides of the supply and pushed is loudly out the back. Leave a Reply Cancel reply.

Now to actually get it installed. I hope my repair can help someone else out if they are having similar issues with their supply. Don’t forget the Software! Finally the board is out and the rotary encoder can be replaced!

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The front panel is easily separated from the main body of the power supply. Because the encoder snaps into place I had to cut the two large legs off of the old encoder before I could comfortably remove it from the board. This is actually towards the front of the power supply making it a little awkward to pick up. Accredited Calibration without Data.

By making it simple to connect, control instruments, and automate test sequences you can quickly move past the test development phase and access results faster than ever before with just a few clicks. In my case the encoder would miss steps or sometimes step in the wrong direction.