My boatanchor rigs consist of a KWM-2, a TS-820, a Johnson Valiant and
an HT-32. All the rigs except for the KWM-2 will occasionally conk
out and need repair, but the KWM-2 never does. I have been using that
energizer bunny of a rig every day for about 10 years now. All it has
ever needed was a new driver and 6146's.