While you wait for answers, we may have found some information which could help you.
Click here for Problem Going Goodmy jvc cdmd switches off 5 secs after switching on(ca ux-a70mdr)?
How can I fix my [stereo, JVC, DR-E5L]?
JVC mini HIFi System says UPGRADE DISK when I put it on power?
How do I fit a new belt on my JVC JL-A15 turntable?
How to repair tape eject mechanism on JVC micro stereo?
How can I fix the audio cassette decks on my JVC Hifi CA-MXJ330?