Jensen Vm9424 has no sound after battery in the car dies

see if this helps if not go to youtube see if you can find the answer or down load a manual from their site here's one https://www.manualslib.com/manual/746125/Jensen-Vm9424.html

It connects to ground

Hello lumberjack623,
When the jensen starts acting this way, it is simply a power problem. The device is not receiving power from the main source. The battery is weak and need to be charged before the unit can turn on once again. The battery power is too low to turn the unit on.
Try to check the power source or the connection to the power source. It is not charging the players battery. You need to have the connection port replaced. Also the power connection needs be checked.
The battery is simply weak that is why it goes right off when it comes on.
Hope this was helpful to you. All the best Elect_Comp

Make sure the fan opening at the rear of the unit is not obstructed. It cannot cool itself is this opening id blocked.

CHECK THE CLOCK BUTTON SOUNDS LIKE ITS STUCK. IF ITS A TOUCH FACE SET THE TIME THEN MAKE SURE YOU GET OUT OF THAT PROGRAM AND GO SOME WHERE ELSE IN THE SYS. IF THAT DONT WORK SEND IT IN FOR WARRANTY REPAIR,

you have to turn off the gps time there is a setting in the menu that you turn off navigation sync or something like that. Go to setup and nav time. It is whatever setting has to do with navigation time

if there is a code it will probably be 123456789.

Hello there,

Here is a link to the PDF file that you need

http://audiovox2.info/docs/jensen/man/VM9424_DOC_IM.PDF

i hope this was helpful don't forget to Rate

Rca jacks either are lose or either one burnt out

reset the clock on am fm cassett jensen radio