How do i fix my sony cassette deck model no. TC-D505?

Hello, Vijay, 3 1/2 years have passed and still no answers?
You still want to play cassette recordings? So do I, and I have got hold of the same cassette deck, but without the main unit. I work with finding which AC voltage to put into it. May be I succeed but get the same problems as you, hi!
I guess your problems are within the software or the ICs proocessing it.
By the way, have you a schematic diagram for it?
Best regards, bror ivar eggen

Bror I. Eggen
January 2011