Sumishi cm7039 wont read dvd,sd,pen drive.. just radio

vbimport

#1

Hi dear Ppl… i got a car stereo Sumishi cm7039 i opened to repair a timing gear , i m sure i connect everything ok, but now it wont read dvd,sd,pen drive… just radio works… maybe i crash the software? at screen all funtions are ok…
thanks for the answers…