This recall is no longer in effect.
A phone call to Minelab USA confirms that indeed, there is a recall of certain GPX4500 gold detectors due to a faulty control box in SOME units. Minelab is already starting to send out letters to the affected users. Apparently only about 150 detectors in the U.S. are affected. Those units with serial numbers below 1200 are affected. This should indicate that only earlier models were affected and later units produced will be fine.
Anecdotal reports indicate that the problem is a set of faulty third party components in some units but that remains unconfirmed at this point.
We’ll keep you posted as more information becomes available.