Quoted from phishrace:Not a board issue.
While not a power driver board issue, as zaza is likely pointing toward is a potential ribbon cable or a MPU problem with a data line.
(Topic ID: 320794)
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Quoted from SIDMANN:The socked to J121 is marked with a pen «J121», but according to the manual the colour and locations on pin should be J120.
The same applies to J120, it should be J121.
No. Not related. Also J120 pin 1 is tied together on J121 pin 1, etc. So they are interchangeable.
Quoted from SIDMANN:I checked the lamp matrix and one entire Column is not working (4) 41-48.
I swapped the ribbon cable with a new, between cpu board and Power board. Nothing.
Can you press on the ASIC U9 square IC? You may hear some crunchy sounds as you press it down.
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