Help dead dryer

[SIZE=3]First off I am on a small island in the Bahamas so I am on my own. Frigidaire LEQ6000ES2 runs anywhere from 1 to 10 minutes and shuts off showing error code of E-68; which I have found out to be stuck button. I removed the circuit board and carefully cleaned it with rubbing alcohol, paying attention to the movement of the buttons. We are in a very humid climate and are also subject to power fluctuations. Anyway no luck, same E-68 code. All I can do is to replace parts, where should I start?[/SIZE]

Here are your parts
Replacement parts for FRIGIDAIRE LEQ6000ES2 Frigidaire/electric Dryer | AppliancePartsPros.com

If you cannot get the key unstuck then Item 1 in Section 4

Here is the tech sheet
http://manuals.frigidaire.com/prodinfo_pdf/Webster/134682200ts_wd_EFS.pdf

And a manual which may be useful
http://frigidaireservicetips.com/pdfs/492_AffinityDryerManual.pdf