Question about Magellan RoadMate 700 GPS Receiver

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Garmin SreetPilot III

Hi! Looks like it doesn't power up when I connect it. No picture, no sound. Do I need a new power cable?

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Are you willing to part with it, I may be able to use it for parts

Posted on Aug 22, 2007


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Posted on Jan 02, 2017


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Wont power up, i replaced the power cable with a new one and still nothing, dose the transducer need to be connected for it to power on ?

The PWR button also adjust the backlight of unit. Press and quickly release to cycle through brightness settings. All else fails call Garmin

Mar 25, 2016 | Garmin Echo 100 Fishfinder

1 Answer

Connections problem

Question: What are the extra wires used for on the power cable for my fishfinder?
I found this on the carmin website under questions and answers. I think your cable is ok to use according to this.
--> Answer: Not all of the wires in the harness are required for use. To connect the unit to the power source, only the black & red wires are required (black to ground, red to positive). Here are descriptions of the other wires in the harness:
  • The Blue wire is used for a NMEA data out connection to another NMEA compatible device. The fish finder outputs NMEA 0183 version 3.01. The receiving device must be compatible with this format and looking for the NEMA sentences DPT, DBT, MTM, or VHW.
  • The Brown wire is used for a NMEA data in connection to receive data from another NMEA compatible device.
  • The Yellow wire is used to connect to an external buzzer or alarm to alert you to any alarms which have been set to sound on the device. The Yellow GARMIN wire connects to the negative end of the external alarm. The positive return on the alarm will connect to the red positive wire of GARMIN.
  • The green, white, and any other colors present have no connection purpose related to your fishfinder. The 18 Pin connector wiring harness is used by several other devices which utilize these wires.
If the device is only being connected to power & do not require a NMEA interface, PC connection, or external alarm support, only the red & black wires are required.

Jul 05, 2012 | Garmin Fishfinder 90

1 Answer

How do I connect my EVO 4G to my radio to play music....

Examine the backside of the speaker you want to play Pandora through. You'll need to have a speaker that features a 3.5 mm audio jack. If your speaker doesn't feature an integrated audio cable, look for a single audio jack that looks identical to your EVO's. you may need an AUX cable .

Apr 30, 2012 | Garmin Car Audio & Video

1 Answer

Garmin shows picture of computer


When the Garmin shows the picture of a computer, it means that the Nuvi is in mass storage mode. This mode is used to load software and map updates to the Nuvi and will usually go into this mode when connected to a computer or improper USB cable.
If this is occurring when it is connected to the vehicle power cable, chances are that the vehicle power cable is the wrong one.
You may also want to contact Garmin Tech Support for assistance.

Feb 23, 2012 | Garmin nuvi 1450 GPS Receiver

1 Answer

No picture no sound

It's the cable connection that you need to check. If the power light stays on then it's just the cable, if it doesn't stay on then the power port is defective.

Sep 11, 2011 | Element Electronics FLX-3211B 32 in. LCD...

1 Answer

My garmin shows a computer picture and doesn't switch on anymore!

Connect it with the USB cable to a PC / Mac - does it communicate with If so look for a software update and load it. Make absolutely sure it's connected to external power - so the battery won't die when updating. Then wait for it to restart.

If no connection then hold the power button for more than 20 seconds - this triggers the auto reset.

If that doesn't help - let it sit like this till the battery has been drained. Then try to restart while charging it.

If still the same - let it drain again and while pressing the On button, hold the lower right corner of the screen for at least 20 seconds. This will trigger a master reset - reverting back to factory mode. It will erase all user data.

Jul 04, 2011 | Garmin GPS

1 Answer

Ok- I need step by step, easy to understand directions. I just bought a Yamaha HTR-6230. I need to be able to connect this receiver to my plasma samsung, PS3 and cox HD cable box. what cables do i need and...

Hi brily, yes you need to conned another optical cables with your HDMI cables since in this model the HDMI is "switching" and the HDMI doesn't cary the sound ... I just bout home theater with this recievr model and I had to buy the extra optical cables to get the sound .
hope this answer your question .

Dec 30, 2009 | Yamaha RX-V463 Receiver

1 Answer

GPS III Pilot? will not power up

Try the dc plug too (also make sure the battery connections are good in the caste). IF still no power up, the internal battery may be shorted. Lots of info online for replacing the internal battery. Good Luck!

Sep 13, 2009 | Garmin GPS III

2 Answers


Where did you reset it. I'm trying to find the reset button for my SreetPilot C340 but don't know where it is.

Aug 30, 2008 | Garmin StreetPilot c340 GPS Receiver

3 Answers

My Garmin Nuvi 250w

how can i get updates downloaded onto my garmin nuvi 200 series,i have it connected to pc but nothing is downloading,new roads,places,construction ect.

Mar 26, 2008 | Garmin nuvi 200W GPS Receiver

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