when a full reset won't work than do not try to fix it your self inside is modern cmos technology that can easily die when you touch it with anything , and i do not know how old it is , but when older than 2 years it id cheaper to buy a new one than let a handyman or tomtom fix it
guest
May 2009
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.