2000-2002 year of manufactured Kyocera KC-120 aka KC120 panels have been reported to have bad batch's of panels that fail with interconnection failures and faults. No output, low output, intermittent output are reported symptoms and visually one can see burn or brown spots on the backside of the panel.
Kyocera has been honoring the warranty for these panels an as of 2008, is replacing entire arrays of panels with the KC-130 and no cost. they will also pay for an pre-approved installer to do the panels replacement ( labor ).
While its unfortunate that the panels have had problems, Kyocera is standing behind there product and for anyone effected by this issue, below is the current contact information to get the process started for getting your panels replaced
Vicki Myers
Customer Service
KYOCERA Solar, Inc.
7812 East Acoma Drive
Scottsdale, AZ 85260
Office: (800) 544-6466
Fax: (800) 523-2329
Vicki.Myers@kyocera.comhttp://www.kyocerasolar.com