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Power On Problems



Here are some suggestions that could solve the problem and prevent you from having to be without your unit!


* Check the FuseIf your unit will not power up.  Check the fuse.  It will be located in a fuse-holder attached to the red wire on the power cable.  If the fuse has blown, replace it with a fuse that is the same value.  If the unit is wired to a fuse panel, check the fuse in the panel.

Debris in the keyboard contactsIn case there is dirt or other debris covering the contacts inside the keypad, press down on the button in question and wiggle it to try to restore its function.

* Inspect the Connections: Make sure the power cable connector is seated securely in the connector on the unit.  Make sure that the cable connections to the power source are not loose or disconnected.

* Clean the ConnectionsCorrosion or oxidation could occur on the power cable connector pins and fuse-holder. This can prevent sufficient power from flowing to the unit. Clean the connections to be sure.  Sometimes the substance is clear and not easily seen.

* Verify the Presence of VoltageUsing a volt-meter, verify that your power source is outputting 12 volts .  Then use the volt-meter to verify that the same amount of power is coming through the cable connector that plugs into the unit (See some of the most common power cable pin diagrams below).


 HDS Units -  PC-30  LCX/LMS Blue Conn. Units -  PC-27  LCX/LMS New Gray Conn. - PC-21X  




 * Rechargeable BatteriesIf your unit has rechargeable batteries, try charging them overnight to give them ample time to charge.

* Cigarette Lighter Adapter Cable:  Click here to see how to check the fuse in the power cable.

If these suggestions have not solved the problem you are experiencing, click here to setup a Return Authorization to send your unit in for service.


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