"Unfortunately mine did the same a few years back. Turned out the EHC shit the bed'... 'It will do that when the battery shoots craps."
WATThell are we talking about? Either it's the battery or the processor.
Battery: I can see a flipflop of a current drop, the horn/lights, something like that loosing a magnetic 1 and goes to 0, aka, an on/off scenario are the two moves in the processor. As if turning off the computer tower at your desk and you lost the processor? Plus, didn't a sponsor mention how many (fill in the brand) processors were shown good. Was this the unit? Hard to buy this if a portable radio has basically some of the same parts, the DC battery dies; a fresh battery brings back the tunes. I'm skeptical at this point.
Processor: I just can't see a dead/dying battery and the processor dies along with it. I'm just saying, how many batteries have been replaced and there are no signs of a sheet stain, nor did the shit hit the fan to land on the thread count to begin with. I'd wait to see if someone chimes in, or research and find that thread that mentions your brand usually tests out good.