davinci

ok i need someone who can help me trouble shoot this alarm, my g/f has has had it for about 4 yrs now... well last year all of a sudden the alarm just went crazy on her... it wouldnt disarm and was goin off like crazy
heres the symptoms

signal coming from car says good on the remote
when push a button says no signal

changed battery pushed buttons millions of times and still nothing
i checked all fuses in the alarm and cant see anythign wrong, is this the antenna? or the remote itself? every clifford dealer says they will charge 70 bucks an hour just to trouble shoot it... f that im an electrician i can easily follow wire diagrams myself and trouble shoot i jsut need some direction

any ideas guys? if i buy a new remote how will i set it? can i some how reset the system? i dont have the original owners manual and papers and i dont wanna have to buy her a new alarm.. she already loves this one but i wanna try and fix it