🚀 go-pugleaf

 had a simmilar problem to this a few years ago with 
a printer. When there is a static discharge, you have a 
spark gap transmitter very close to the electronics
you wish to protect. What I found worked was grounding 
the metal plate ( drawer in your case ) through about a
100 to 470 ohm half watt carbon comp resistor. This tend to dampen
the transmission and bleed of the charge. A commercial
anti static pad may work as well, and they are cheap to
try.  Grounding the metal plate just made a nice 1/4 wave antenna
and did not fix the problem.  The next step beyond adding the 
resistor is to add a metallic shield between the object
being touched and the electronics being protected.
This can start to cost money.

The failures I had were some what random, so I used a
static gun and would try about ten zaps. On unprotected
units I would get 8-9 failures, and on protected units
abut one failure out of twenty. It might be usefull
to try to keep good data as you try an empiracal solution.
Best of Luck.
billmcd@well.sf.ca.us
Bill McDonald
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