Garmin 395LM

[Kwaka Z1000]

I have experienced a nightmare with my Garmin 395LM recently. I fitted a new mount for my motorbike where the lead from the power supply was too short; I extended the lead and although I have the correct power on the cradle the GPS would not fire up. It will start on its own battery and also if I attach by USB. My local shop confirmed that the correct power was available; I have heard that I may need a new lead; if that is so, does anybody know why, or have any idea what is going on please?

 

[Nuvi-Nebie]

When you say the unit 'will not fire up', does the unit do anything at all?, I.e. does it power up in data transfer mode rather than navigation mode?

I am not sure which cable you have extended, but if it is a cable with a mini USB plug on it that connects to the satnav, there is a possiblity that the problem is the fifth USB pin, Garmin sometimes use this fifth pin to tell the unit which mode to go into e.g.:-

If the Resistor 'R' was present in the originanal cable, then when extending the cable this component my have been disconnected, NOTE Data wires not required for Navigation

 

[Kwaka Z1000]

Thank you very much for your swift reply: Yes the unit does absolutely nothing when mounted in the cradle. I cut the lead between the power input and the fuse, and inserted my extension, which I have since removed. I have not touched the mini USB cable which I only use to connect to the computer; and I have tried connecting, and that still works. My concern is that if I get a new cable, that will not work either and I have wasted my money. I was thinking that there could be some fuse in the device that has blown which is used solely for charging from the cradle, as all other methods work?

 

[Nuvi-Nebie]

I doubt that there is a fuse in the unit itself as there is an in-line fuse in the cable (between 2 and 3) :-

There is a good chance that the 'black box' between 1 and 3 in the picture converts 12/24 volts into 5 volts before feeding it to the satnav

 

[Kwaka Z1000]

I doubt that there is a fuse in the unit itself as there is an in-line fuse in the cable (between 2 and 3) :-

View attachment 512

There is a good chance that the 'black box' between 1 and 3 in the picture converts 12/24 volts into 5 volts before feeding it to the satnav

Thank you once more; I have changed the transformer already and still no luck! But as I mentioned I have checked the output from the transformer and it is steady on 5-6v. I also reloaded the software on the device, but this appears not to have helped. I have ordered a whole new loom, as shown in your diagram above, and I will see what happens then; it is certainly baffling!