this post was submitted on 10 Dec 2023
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tube tester (lemmy.world)
submitted 11 months ago* (last edited 11 months ago) by m3t00 to c/technology
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[–] skeezix 5 points 11 months ago (1 children)

I bet there’s somebody somewhere that knows why the three bottom left sockets are red.

[–] kalleboo 7 points 11 months ago

Finding a less potato image of this device on Google, the red sockets are not testing sockets but "pin straighteners"