Have power to my CDX-R300 from Sony but none of the control buttons works, can't change radio station or adjust volume but CD player works

SOURCE: sony cdx r3300 Won't play...simply scrolls a message

_half fixed, use the remote -@least can get more life outa the unit!

SOURCE: sony cdx-m610 BIG PROBLEM

yal ever fix them? its the ribbon cable between the face and the circuit board inside the unit the ribbbon cable is very cheap on ebay just google for example cdx-m610 ribbon cable now for the repair close ur face before u take out ur radio assuming u guys still have ur remote to do so theres 3 screws on the bottom of the face when u go to carefully pop the front panel off after pullin them hold ur deck facing down (this will keep ur reset and open buttons from fallin out then theres 4 screws holding in the face's circuit board roll the board out of the face very very carefully pry open the little black lock holding the cable in the connector then open ur radio up pull out the cd player assy same thing with that connector then ull notice the cable goes thru a tension roller pull each end of the cable to unroll it hold it there while removing the cable and sliding in the new one then slowly let go of the roller reattach the cable ends and put everything back together with the face remember its easiest to hold the deck face down those 2 buttons will stay in place hook the top of the face's cover first then put the deck back in ur ride and enjoy these ol sonys r worth a $20 fix specially if they still work good hope this helps yal 

SOURCE: Sony CDX-S2210 CD Player stuck on demo mode

make sure the unit is switched off and the clock is displayed then

1 Press and hold (SEL).
The setup display appears.
2 Press (SEL) repeatedly until the
desired item appears.
3 Press the volume +/– button to select
the setting (example “ON” or “OFF”).
4 Press and hold (SEL).
The setup is complete and the display returns
to normal play/reception mode.
Note
Displayed items will differ, depending on the source
and setting.
With the card remote commander
In step 3, to select the setting, press < or ,.
The following items can be set (follow the page
reference for details):
“z” indicates the default settings.
*1 When the unit is turned off.
*2 When the audio output is set to “SUB.”
CLOCK-ADJ
(Clock Adjust)
(page 4)
BEEP To set “BEEP-ON” (z) or
“BEEP-OFF.”
SUB/REAR*1 To switch the audio output.
– “SUB” (z): to output to a
subwoofer.
– “REAR”: to output to a
power amplifier.
DIM (Dimmer) To change the brightness of the
display.
– “DIM-ON”: to dim the
display.
– “DIM-OFF” (z): to
deactivate the dimmer.
DEMO*1
(Demonstration)
To set “DEMO-ON” (z) or
“DEMO-OFF” (page 4).
A.SCRL
(Auto Scroll)
To scroll long displayed items
automatically when the group/
track is changed.
– “A.SCRL-ON”: to scroll.
– “A.SCRL-OFF” (z): to not
scroll.
LPF*2 (Low
Pass Filter)
To select the cut-off frequency
“78HZ,” “125HZ” or “OFF

SOURCE: Radio stations fuzzy and not coming in anymore - Sony CDX-GT310

i have the same problem, it was a factory fit and the garage checked it and all the connections were ok, it appears to be a fault with the receiver.the radio is just 3 years old.

SOURCE: Sony CDX-S2210 buttons are jammed

Hi Sameersach,
Have you found a solution for your problem? I have the same player and I got the same problem...please, let me know if you found a solution. Thanks!