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EEVblog 1665 – Keithley VFD REPAIR 2 – Electric Boogaloo
Part 2 of the Keithley 2302 battery simulator repair of the VFD display.
Just a follow-up on testing the actual VFD display itself to see if there is any fault that’s not the VFD vacuum.
00:00 – Having another look at the failed Newhaven VFD dispaly module
05:37 – Measurign voltages
07:32 – Oscilloscope probing
08:33 – HELLO capacitor! But not the one I expected.
12:25 – To the SMD cap replacement kit
13:11 – Rail measurements again
14:38 – Big ripple improvement, but lets qild the lilly.
15:53 – Bugger! Ok, let’s try the belt’n’braces approach.
17:21 – Winner Winner Extra Chicken Dinner!
Forum: https://www.eevblog.com/forum/blog/eevblog-1664-repair-with-junk-bin-parts!-keithley-2302/
How VFD Displays Work: https://www.youtube.com/watch?v=gZIRPJt69sM
Hacking a VFD Display: https://www.youtube.com/watch?v=clUVEyi_YNM
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By David L. Jones
4.6
7979 ratings
Part 2 of the Keithley 2302 battery simulator repair of the VFD display.
Just a follow-up on testing the actual VFD display itself to see if there is any fault that’s not the VFD vacuum.
00:00 – Having another look at the failed Newhaven VFD dispaly module
05:37 – Measurign voltages
07:32 – Oscilloscope probing
08:33 – HELLO capacitor! But not the one I expected.
12:25 – To the SMD cap replacement kit
13:11 – Rail measurements again
14:38 – Big ripple improvement, but lets qild the lilly.
15:53 – Bugger! Ok, let’s try the belt’n’braces approach.
17:21 – Winner Winner Extra Chicken Dinner!
Forum: https://www.eevblog.com/forum/blog/eevblog-1664-repair-with-junk-bin-parts!-keithley-2302/
How VFD Displays Work: https://www.youtube.com/watch?v=gZIRPJt69sM
Hacking a VFD Display: https://www.youtube.com/watch?v=clUVEyi_YNM
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