EEVblog 1669 - Agilent 53131A VFD to LED Display Upgrade MAILBAG

A mailbag replacement custom LED display for the Agilent 53131A VFD display frequency counter. www.hubequip.net Oven oscillator upgrade: https://www.youtube.com/watch?v=KmZwAjmzHx8 Playlist of related videos! https://www.youtube.com/playlist?list=PLvOlSehNtuHupdUJVYdRnihTTQ_Tw7MHt Forum thread on the display: https://www.eevblog.com/forum/testgear/hp-agilent-53131a-53132a-vfd-to-led-conversion/