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Will not turn on

I replaced the batteries and now it will not come back on. It does not act like the power button is getting any connection.

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Did the old batteries leak check the battery terminals may sure they are clean and making good contact.test the new batteries sometimes even new batteries are defective

Posted on Mar 24, 2014


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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.
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When the player is hooked to the laptop or any pc it is acting like an external read write drive.. data is being exchanged.. so the buttons are disabled on the device.

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Normally, if the LCDs light momentarily and go off, then the system is not getting power from the AC adapter (Even if the light is on on the brick)
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  2. Check the connection on the system for cracks or loose connection to the motherboard. If the connector is damaged, then the jack or the motherboard will need replacement
  3. If the system will not power on with a known good battery or AC adapter, then try these steps.

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Hook up the ac adapter only and see if you just get power that way. If you do then you know the battery is faulty cause that would cause the power button to act like its shorted out.

If you hook up the ac adapter and the power button still isn't acting quite right then its either going to be a problem with the power control board or the motherboard.

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If the starter button does not result in the starter motor turning, you need to get the wiring diagram for your specific bike (maybe in the owner's manual?) and do some checking. Check out the starter circuit (wiring, connectors, safety switches/relays, etc.) to get familiar with where everything is located on the bike. Check that the battery is fully charged. Hook up a voltmeter to the negative post on the battery and the the positive probe to the starter motor terminal. Turn on the ignition and press the starter button. If the voltmeter indicates around 12-13 volts when the starter button is pressed, then the starter is in need of repair/replacement. If no voltage is indicated, you need to trace back through the circuits (starter solenoid, safety switches/relays, connections) until you do get 12-13 volts. The place where it stops is the trouble area.

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This has happened to my Blackjack II and I've found if I plug it into the charger then plug the charger into the wall, the phone comes right on. It's a pain, however, if I'm not at home when it decides to do this since no amount of button pushing will turn it back on, it acts like the battery is dead (when I know it isn't!)

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