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You must have JavaScript enabled in your browser to utilize the functionality of this website. The front e3640q is easily separated from the main body of the power supply. This is actually towards the front of the power supply making it a little awkward to pick up.

E3640A 30W Power Supply, 8V, 3A or 20V, 1.5A

JavaScript seems to be disabled in your browser. It does have two speeds loud-ish and louder? The underside of the board has some giant copper traces, and a large portion has the silkscreen removed and has been tinned. Keysight BenchVue software for the PC eliminates many of the issues around bench testing.

After the knob is pulled off the front the dark cover needs to be removed. I made sure the holes had minimal solder before pressing the new encoder into place and soldering. Request a Calibration Quote. Don’t forget the Software!

Accredited Calibration without Data. It is also the same encoder used in many different Agilent products.

Other than that there are a lot of passive components and a MOV soldered on near the output. Accredited Calibration with Data. Now to actually get it installed. 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.


A couple days later I had a new rotary encoder ready to be installed. The new encoder worked perfectly and made the supply work like new. Leave a Reply Cancel reply. I cleaned up the flux left over with a little rubbing alcohol and put everything back together. 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.

Keysight Agilent EA DC Power Supply | Transcat

The picture above is the new encoder from Agilent. After doing a little research I found that it was a known issue for the rotary encoders in these power supplies to fail. If you forget to remove these the PCB on the other side will not be able to be removed. This product is available for shipping to United States and Canada only. Because the knob is the main method of user input other than RS or HPIBit made the power supply almost impossible to use.

Agilnet power supply started up perfectly the first time and I made sure to run the self test again just in case. I hope my repair can help someone else out if they are having similar issues with their supply.

After removing a couple of screws the e340a inside of the power supply slides out the front. The whole board will then slide over to the right in this picture e340a is easily pulled out. Fortunately Agilent has an online shop that supplies many wear-and-tear items for their various products.

Rent From Transcat Do you need a test instrument e364a0 a short time? E36400a over voltage features as well as the programmability of the supply both checkout out as well.

This lead me to believe that the only issue with this power supply was that the rotary encoder was on its last legs.


Ships in weeks. 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. There are three clips along the top which can be accessed from the inside.

Would you like this item calibrated? After it is loose the cover tilts forward and is easily removed. New Purchase Calibration Learn More Save time and money by calibrating your new instrument before it leaves our warehouse, ensuring it arrives ready to be put into service. In my case the encoder would miss steps or sometimes step in the wrong direction. After cleaning the grime off the front panel and removing the marker from the case I coerced the E into running a self test which it passed without hesitation.

I also made sure to order a new knob to replace to old grungy one to complete my work on the supply. I recently bought a used Agilent power supply in a very sad condition. The fan towards the center draws air in from the sides of the supply and pushed is loudly out the back.

Request a Rental Quote. Request a Calibration Quote Transcat can calibrate your existing instruments. Skip to content I recently bought a used Agilent power supply in a very sad condition.

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. Finally the board is out and the rotary encoder can be replaced!

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