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(Topic ID: 164495)

Switch Matrix Problem

By jrawlinson_2000

7 years ago


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#5 7 years ago
 
TAB

terryb

Inactive member

US Banning, CA

11y 90,150 4,795 14

There are no diodes for the optos, but there is an LM339 which can go bad and cause random problems. Remove the row and column connectors from the opto board(s) and see if the problem goes away.

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