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[* black] You may likewant to mark the lead polarity on the back of the power supply board with permanent marker. But if you look atmarker, and use this to install the top of the board you'll see that the polarity is printed there for each capacitor, and after you remove the capacitors you'll see that it's printed on the bottom too -- this is only if you really wantas to do thisavoid putting it in wrong.
[* black] You may likewant to mark the lead polarity on the back of the power supply board with permanent marker. But if you look atmarker, and use this to install the top of the board you'll see that the polarity is printed there for each capacitor, and after you remove the capacitors you'll see that it's printed on the bottom too -- this is only if you really wantas to do thisavoid putting it in wrong.
[* icon_note] Putting the capacitor in the wrong way will cause the capacitor to explode. Permanent marker on the solder mask will not affect the rest of the board.