Just keep sending it back to Garrett, only takes a couple of weeks, each time... They all can't be bad units, must be a half dozen or so members here, who have had there's for two or more years, without an issue, assuming they actually used them. Several members have suggested buying one or more backups, so you should have a semi-functioning unit, until on comes back from Garrett. "You get, what you pay for...", wonder if that includes shipping it back several times... $127.50... Wonder what the actual cost of getting a good unit, if you add up the shipping costs, to send them back... Sorry about the sarcasm.
I used the Centech, while mine was being given Garrett's royal treatment. Didn't really miss it that much. The Propointer has worked fine, only did the random beep thing once, since getting it back. Figure a few months or so, it'll need to be shipped back to Garrett for round 2. Hate pulling out of the hole, just to see if it stops beeping, think it's tainted.