Voltage problem in printed circuit with switches
Electronic design section

Try a lower value of R2 - say 1k or lower. Resistor is pulled down by switch which should/may tolerate higher currents. If this works, summat aglae. If this dinna work, summat aglae.



Other:

IC may be damage - quite possible

Switch pad may be contaminated with coffee beer blood crud ... - quite possible

Measure pin to ground resistances. Same?

Scrub pads with toothbrush etc with suitable solvent. Be ware of unsuitable solvents :-).

Scratch along spaces between tracks with scriber or equivalent.

Shouldn't be needed, but cut PCB track from S2 - easily repaired again. Better? Different?



If none of the above:

Go to www.piclist.com
 Join.
 Ask your question with [EE] subject tag.
 Tell me I sent you :-).