Since I received such great help on the Icom PW1, let me throw a question on the Icom BC-79. My beloved and first HT, the Icom W21AT, is now without a charger. The BC-79 failed, no output. The wall supply is OK, but appears to have a fault internal to the unit. Has anyone repaired these or are they considered disposable? 73 Bruce W1UJR