Fluke 8050A LED Conversion

A common problem with Fluke 8010A, 8012A, and 8050A bench/portable DMMs is the LCD will ‘bleed’ or turn completely dark.  Replacements are hard to come by.  But if some common 7-segment LCD displays are hacked in, you get a meter that can be read in the dark.

I did this project before starting this blog and did not fully photo-document the process.  But you get the idea.

This is not an original idea.  More 8050A LED conversions from around the web:


12 Responses to Fluke 8050A LED Conversion

  1. Sean says:

    Have you ever done a conversion for an 8010a? Do you have any suggestions or ideas?

  2. William Tang says:

    My Fluke 8050A meter head (LCD) is not showing any digits and I believe the meter is perfectly functional. If I can convert the display to LED, it will be great. Is any circuitry involved and if so can you send me that circuitry so that I can do some conversion of my meter to LED display.

    Thanks and regards


  3. Rob says:


    Just wondering: Did you make or buy the power supply in the photos? If the later, which make/model is it? Great work with the display. I have an 8050A and the display is in very good shape. I use it all the time and, though it’s a manual ranging DMM, I still enjoy it. Great performance for such an old design. Thanks for publishing this.

  4. Alex says:

    I just purchased an 8050a with a dying LCD. Thinking about using your guide to swap for an LED. Is the schematic in the first picture all that needs to be done? Besides the pull up resistor and trace cut on the reverse of the board.

  5. Jaco says:


    Thanks for this mod, it really works very well.

    I would like to know if I can use this post and or content to publish it in our HAM Radio Club News Letter called “QRX” we normally have about 4 publications and we share what we have done in the past quarter.

    Thank you..

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