OK, what voltage are you measuring at pins 1 & 2 without pushing the start button? You should be getting at least 10v. If not, the cap may have too much leakage current; try unsoldering the cap and measure again.
If it's still below 10v, replace the 220k R2 with a 100k resistor, and the new 1uF cap with a 2.2uF cap. This keeps the 0.2 second debouncing delay, but allows more current flow to the input of the IC.
How long did you have the soldering iron on the pins when you were shorting them out? You may have overheated the IC.
If it's still below 10v, replace the 220k R2 with a 100k resistor, and the new 1uF cap with a 2.2uF cap. This keeps the 0.2 second debouncing delay, but allows more current flow to the input of the IC.
How long did you have the soldering iron on the pins when you were shorting them out? You may have overheated the IC.
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