FB80 and GB5 bug

January 20th, 2009

IMPORTANT: We don’t yet know if this is a one off glitch or common to all machines.

This is probably of interest to anyone who has competed or watched competitions since 2005.

In some competitions the La Marzoccos used were GB5 and FB80 AV machines – meaning they have a line of buttons linked to volumetric controls.  More recently a lot of machines just had one big on/off button.

Anyway – I remember back in 2005 in Seattle and in other barista competitions that during a competitors set the machines just seemed to switch off.  Everyone was very confused how a barista could have done this as you have to push and hold an on/off button for at least 3 (or maybe 5) seconds.

A few months ago Matt Buckley at Milk Bar showed me this weird little thing (he didn’t want to be in the video).  Here is an explanation:


FB80 & GB5 software bug from James Hoffmann on Vimeo.

If anyone else can verify this bug I’d be interested/grateful and also I’d like to know if it affects 2 groups too.  Comment away!

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