(Topic ID: 287397)

Help wanted : Problem of burning U4 and TTL

By Matt08

8 months ago

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#1 8 months ago

Hi Everyone,
my Devil's Dare is working fine.
But It burns sometimes switch matrix riot U4 and switches returns, strobes and enable Z11 to Z15.
I have made all ground mods on the boards.
I don't understand why it burns.
All advices are welcome
IMG_20210120_213044 (resized).jpg

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