Last weekend, I met a diver whose Wisdom insisted his newly filled tank was at 1,100 PSI, the end pressure reading from when he surfaced from his last dive. When I stuck a pressure gauge on the tank, which felt full, by the way, the gauge registered 3200 PSI (it was a hot day). This was his Wisdom #2. Sounds like a similar problem to yours.
I'm on my third manufacturer replaced Wisdom. Just before both #1 and #2 died, the LED reading started to disintegrate, then the screen flashes "ALT" for a split second, then lights out. #1 died on land, while #2 died in the middle of one of my favourite dives. Each made it to roughly 80 or so immersions prior to their untimely demise.
I've had it from different people north and south of the Canada/US border that there is a problem with the early issues of the Wisdom. Seems plausible...it is fairly new on the market.
I won't dive with the Wisdom without a backup SPG now. Even though I'm still aborting the dive, I still want to do my safety stop, and I still want to know how much gas I have on my back while I'm doing my safety stop.