Need JVC car stereo help mystery

[robertjp]

Yesterday I left my lights on in my vehicle and drained the battery to 0. I had to put a charger on it to get the vehicle to start. Once it started I got an error code 4 message on my JVC KD s550 cd/radio. I tried resetting the unit and nothing, still error code 4. Doers anybody have a clue what happened or what I should do? Thanks much. BP

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[jco1385 5,000+ posts]

is there a reset button on it? or just unhook the battery for a few minutes and try again.

edit: doh

 

[robertjp]

I already tried the reset buttons, did nothing. I guess I can unhook battery and try that. Thanks

 

[Louisiana_CRX 5,000+ posts]

voltage spike from the charger and fried the main operations chip....maybe

 

[robertjp]

JCO,

Thanks. Problem solved! I unhooked the battery and hooked back up and presto! Thanks Bob