Tascam GB-10 Problem

[SgtRock]

I've owned a Tascam GB-10 for a couple of years and has been working fine...until today!

I've added some new MP3s to the SD card and they play back faster!

I've reformatted the GB-10 and checked that the MP3s are 44.1 KHz

I've converted to wav and get the same problem

The files on the SD card play fine when inserted to the SD port on my laptop.

It must be a problem with the GB-10 itself?

Can anyone help me resolve this problem?

TIA