(Topic ID: 218436)

So uh... what happens when switch matrix shorts to lamp matrix....?

By trueno92

5 years ago


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  • 11 posts
  • 5 Pinsiders participating
  • Latest reply 5 years ago by zacaj
  • Topic is favorited by 1 Pinsider

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#5 5 years ago

I'd guess one of your lamp transistors is stuck on

#11 5 years ago
Quoted from trueno92:

I'm hoping ur right.... now to find out which one...
So effectively the lamps on thie column are basically being driven by its correct transistor and the other one that's not turning off? But at the same time?

No, the 'correct' transistor for that column probably isn't turning off all the way. Either it or its predriver is probably bad. Take out the driver and test them all with your DMM, I'll be the transistor for that column reads bad

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