how can i fix,dishwasher,kenmore,665,15772990?

my sears ultra wash quite guard plus,model 665,was working fine 3 days ago,then locked light apeared,i reset it ,holding 'no heat dry'worked after that about 2 weeks,now nothing works except,cancel/drain,and the lights seem to change random,on/off.cut off power to reset but no dice,, 130$ service call,can,t afford it ,one other person had same problem,he said it,s the control panel,..100$ for new part,well i,m looking for a second opinion,has anyone else had this 665 model and problem,help..thanks..

jonny
January 2010