viper 791xv alarm/remote start

Hello all, Well I have a probablem hopefully I can get the sulution solved. I have a viper 791xv/remote start. I've bought my car with this alarm and one day to another my siren stops working. I checked my led light it still blinks the same I checked my siren and it works..iso I put a test light to the brain to the brown wire(siren) and its negitive and when my alarm is activated it stays negitive dosent give out any positive can I just buy the brain and not the hole alarm

Viper brains are lifetime warranteed to the original owner. If you can't go that route, they have "warranty plus" where you send em the brain and you can excgange it for a new one at half price. Go to www.directed.com where you can find a local dealer.Prepare your future. It wasn't the lack of stones that killed the stone age.