philips dc710/61e radio

i have an original 1994 m reg discovery1 and wanting to keep it all original as only got 12000 on the clock the radio Philips amr2195/ 22 dc710/61e has stopped working,thinking to corrosion due to length of time in garage. I don't think these can be repaired and am looking for a replacement unit but must be the same one. any ideas where I can obtain one from as none on fleabay.