http://www.geocities.com/endre_rl/isuzufaq.htm#faq60
yup, I have the same problem up front. There are two chips on the alarm board, one for the front delay and one for the back. If you read the info in the link it looks like some have been successful replacing the chip.
I'm having a used board shipped to me from a 99 Rodeo (the guy rolled it) for 30 bucks. I already was successful in removing the old one (for kicks) and reinstalling it. You have to be a bit of a monkey on you your back to get to it. I think the problem with a used or even a new board is that it is going to happen again and again and again. I'm hoping to do a bit of research with my old board to see if I can find a source for the chips (maybe I'll buy a handfull and sell them to folks).
The price for an OEM board is like 212.00. From St Charles I'm sure is under 200 bucks.
If you have a pick and pull near by see if you can find one there first.
Ryan