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Originally Posted by David55
That's exactly what I did. I hooked it up to a 5v current from a power supply, and to a multimeter. it looked like it was working fine for about a minute and then is started smoking again.
The pot says 500 ohm on it.
David
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Does the pot have 500 ohms on it or just 500? 500 indicates a 50 ohm pot, 50 times 10^0. 50 ohms on a 5 volt supply is 100 ma or a power dissipation of 1/2 watt. Add to that the current you are supplying to the LCD and for most pots you have exceeded the power rating. Generally, once a pot has been stressed, it longer remains at the value it began with. Take your multimeter and set it to read resistance and place it across the pot to see what the value is now. Let us know shat you find.
Al