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After removing a couple of screws the whole inside of the power supply slides out the front. Keysight BenchVue software for the PC eliminates many of the issues around bench testing.
I hope my repair can help someone else out if they are having similar issues with their supply. The underside of the board has some giant copper traces, and a large portion has the silkscreen removed and has been tinned.
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A couple days later I had a new rotary encoder ready to be installed. Accredited Calibration with Data. The fan towards the center draws air in from e3640w sides of the supply and pushed is loudly out the back.
Don’t forget the Software! It is also the same encoder used in many different Agilent products.
Keysight Technologies (Agilent HP) E Series – W used or new for sale at used-line
Skip to content I recently bought a used Agilent power supply in a very sad condition. 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 doing a little research I found that it was a known issue for the rotary encoders in these power supplies to fail.
The front panel is easily separated from the main body of the power supply. I made sure the holes had minimal solder before pressing the new encoder into place and soldering. Would you like this item calibrated? This lead me to believe that the only issue with this power supply was that the rotary encoder was on its last legs. The new encoder worked perfectly and made the supply work like new. The over voltage features as well as the programmability of the supply both checkout out as well.
Finally the board is out and the rotary encoder can be replaced! Rent From Transcat Do you need a test instrument for a short time?
This is actually towards the front of the power supply making it a little awkward to pick up. Request a Rental Quote. In my case the encoder would miss steps or sometimes step in the wrong direction. 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.
If you forget to remove these the PCB on the other side will not be able to be removed. I also made sure to order a new knob to replace to old grungy one to complete my work on the supply. Other than that there are a lot of passive components and a MOV soldered on near the output. Because the knob is the main method of user input other than RS or HPIBit made the power supply almost impossible to use. The picture above is the new encoder from Agilent. Request a Calibration Quote.
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.
Agilent Technologies / Keysight Technologies E3640A
The power supply e3640x up perfectly the first time and I made sure to run the self test again just in case. I recently bought a used Agilent power supply in a very sad condition. After the knob is pulled off the front the dark cover needs to be removed.
After it is loose the cover tilts forward and is easily removed. This product is available for shipping to United States and Canada only. Transcat makes it easy: 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.
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. Leave a Reply Cancel reply.