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/

Forum: https://www.eevblog.com/forum/blog/eevblog-1669-agilent-u53131a-vfd-to-led-display-upgrade-mailbag/

How VFD Displays work: https://www.youtube.com/watch?v=gZIRPJt69sM

Web Site: http://www.eevblog.com
Hardware Store: https://eevblog.store/
Merch Store: https://eevblog.dashery.com/

If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Or with crypto:
BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM
ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c
BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4
USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF

Other channels:
EEVblog2: http://www.youtube.com/EEVblog2
EEVdiscover: https://www.youtube.com/eevdiscover

#ElectronicsCreators #Mailbag
...
https://www.youtube.com/watch?v=FyTRrPWWF2s