HP5385A LCD Repair

The LCD in my beloved HP 5385A frequency counter (with the OCXO option, naturally) has been gradually deteriorating, and it was high time I replaced it:

The HP5385A's failing LCD

The HP5385A’s failing LCD

Of course it’s not a standard HD44780 LCD, but a custom branded HP part (#5061-5212, revision A).

Luckily, I was able to salvage a replacement from an HP 6622A power supply front panel off ebay. The front panel cost about 1/3 of what I paid for the HP 5385A in the first place, but it’s a great frequency counter, so it was well worth the investment.

2 thoughts on “HP5385A LCD Repair

  1. I read from somewhere (forum texts about HP multimeter repair) that it is not the LCD itself turning bad, but the polarization filter part. It apparently can be replaced separately.

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