What to do if there is no sound on my Jensen JMS4?
First, ensure the Jensen Radio is powered on. If it is, verify that the volume isn't set too low. If there's still no sound, check to see if the unit is in Pause mode by pressing the play/pause button.
How to troubleshoot a Jensen JMS4 Radio that has no power?
First, make sure your Jensen Radio is receiving power. Also, if the power supply is connected to the vehicle accessory circuits but the engine is not on, switch the ignition key to “ACC”. Finally, inspect the fuse and replace it with a 15 AMP ATO fuse if it's blown.
Warns against submerging the unit to prevent electrical shorts, fire, or damage.
Advises cooling the interior before playback and not mounting near engine compartments.
Specifies operating with a 12-volt DC negative ground battery system and includes warnings.
Provides step-by-step instructions for mounting the JMS4 radio unit securely in a vehicle.
Explains basic operations like power, volume adjustment, and pause/mute functions.
Explains how to pair, view, lock, unlock, connect, disconnect, and delete Bluetooth devices.
Details how to stream audio, select tracks, and pause/resume playback from Bluetooth devices.
Provides solutions for issues related to the unit not receiving power.
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