your problem is same as my sony md.My unit was send to sony for repair but the technician told me that they will replace the whole module the problem is the cost of replacement is like buying a new md.So,I decided to full out my unit. when I was in home I try to fix and check inside and I found a very thin wire was broken I try to fix the said wire and now my md is working very fine.
My email address is ronald_copino@yahoo.com.au
ronald
September 2006