I have a Techtoyz from Optoelectronics Micro DTMF decoder that has been
sitting in a drawer for several years that I just tried to use today. I put
in a fresh battery and it did come on but displayed fragmented and
incomplete characters. So I switched it to receive and hit redial on a phone
and it did read the number dialed, but again displayed fragmented
characters. When switched to recall, it displays the incomplete characters.
There does not seem to be a visible user reset button on the unit.

Any ideas?
Is this worth repairing and is there actually anyone that would repair such
an item?
Or should I just toss it?

Thanks,

Phil