Question about Garmin GPSMAP-640 GPS Receiver

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How do you get audio output from gpsmap 640?

In the automotive mode, the sound is very weak and the volume controls don't turn it up. how do i get louder audio in this mode? Do I need to connect to my car radio?

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Better if u connect it through FM tuner on your car radio

Posted on Jun 26, 2010

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Posted on Jan 02, 2017

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1 Answer

70-640. Why is volume so low?


Check whether the audio is muted or half-muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Aug 06, 2015 | Grundig Televison & Video

1 Answer

I have a Harmon Kardon HK 3370 Stereo Receiver and a Samsung LCD LE40C530F1W. When I connect the stereo Aux jack to the LCD Audio jacks ( red and white rf cables ) I get no sound out via the receiver.


Obviously make sure your stereo mode selector is set to AUX and the volume on the stereo is turned up at least a little when you test it.

If you still have no luck then try increasing the volume on the TV as well. You may have it set so that the level of the audio signal leaving the rear output connectors on the TV varies with the TV volume. That way if your TV volume was turned down or muted when you tested it, then you would not hear anything coming through your stereo.

There should be a setting in the AUDIO OPTIONS menu of your TV where you can switch between a VARIABLE AUDIO OUTPUT and a FIXED AUDIO OUTPUT level.

With the FIXED audio output level, you control the volume of the TV audio coming through the stereo speakers with the stereo remote only.

Otherwise it should work.

Good luck.

Jul 16, 2011 | Harman Kardon HK 3370 Receiver

1 Answer

Cant get xm weather on garmin 740s


To receive XM weather or audio, the GPSMAP 740s requires a GXM 40 Smart Antenna with XM subscription.

The GXM 40 Smart Antenna (010-00730-00) is used to receive weather and audio service from XM satellite radio. For details on XM services please visit our XM webpage.

Once a GXM 40 Smart Antenna has been connected to the GPSMAP 640, the device can display the subscription information for the antenna.

From the Home Page in Boating mode:

  1. Select Configure
  2. Select System
  3. Select System Information
  4. Choose Weather Subscription

From the Home Page in Driving mode:

  1. Select Tools
  2. Select XM Services
  3. Select XM Radio
  4. Set the channel selector to channel 0
  5. Select Radio ID

The subscription information will now be displayed on the screen.

Mar 26, 2011 | Garmin Gxm 51 Weather And Audio Xm...

1 Answer

We have the stereo hooked up to the dynex 42'' tv, as we did our other tv, we can not mute the complete sound and also sometimes we cant turn the volume up and down whats going on?


Since you have it hooked up to the stereo system, you need to go to on screen audio set up and turn off the TV built-in speakers (you will be listening the TV sound through your stereo system speakers), then go to the audio output set up and set it to 'variable' so the audio output of the TV's RCA audio out put will vary with the volume control of the TV (not all TV will alow this function), you will need to set the stereo volume to certain level (around 9~10 O'clock setting) since the sound coming from the TV will be controlled by the TV remote volume control. You can otherwise set the TV output to be at 'fixed' level, which means the sound output of the TV will not be controlled by the TV remote volume control, you will use the stereo remote volume control to adjust the sound level instead. I hope this is clear to you.

Nov 19, 2009 | Dynex DX-L42-10A 42 in. LCD TV

1 Answer

Can i connect nmea outputs from a raymarine e-80


yes, you need the NMEA out cord set for the E 80 and hook the output of the E series to the input on the power data cord on the Garmin - out to in

Sep 30, 2009 | Garmin GPSMAP-640 GPS Receiver

1 Answer

My Computer have an integral Realtek sound card,and Gigabyte motherboard. The option for mic volume is grayed out, and i just can`t turn it on. I saw in one forum that evryone have similar problem, but for...


You should update your sound driver. Update of Sound Card Driver.
  • Go to the control panel
  • Click on the System Icon
  • Click on the Hardware Tab
  • Click on the Device Manager then
  • Click on Sound, Video and game controller
  • Right click on sound driver from the list.
  • Click on Update Driver.
  • Update Driver Wizard start.
  • Realtek Sound Driver

Apr 25, 2009 | Computers & Internet

2 Answers

Very low volume


check the mode button and make sure you are in the right mode, sounds like you have it in the wrong mode.

Sep 16, 2008 | Icom IC-R10 Handheld Scanner

1 Answer

Sound


Set your SAT receiver to full volume and use your Sony TV volume control as the master volume control. If you use an external surround sound amplifier do the same thing using the amplifiers volume control as the master volume control.

Consider that all source devices that have the ability to control their output volume will output what they call line level 0dB when the source device is set for maximum volume. If you set the source device to 1/4 volume your output to the amplifier may be around -25dB or lower. Introduce that low of an audio level to the amp and you will have to turn the amp up to half way or better causing the amp to amplify noise too.

Jul 04, 2008 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

1 Answer

Amps and sub-woofer not working


Enter into the Audio Setup mode(press and hold volume button for at least 1 second). Next, repeatedly push the volume button until the display shows "2 ZONE". Make sure this feature is turned off. Hold the volume button again for at least 1 second to leave Audio Setup mode.

Now you need to make sure the Subwoofer Output is turned on. Do this by holding down(AM position) on the control knob(toggle stick) for at least 1 second. Each time the button is pressed, the Subwoofer Output is turned ON/OFF. the display should show "SW ON".

Next, you can go into Audio Control mode(press but do not hold volume button). Keep pressing on the volume knob until "Sub-WLevel" is displayed. Here you can adjust the amount of gain for the Subwoofer ranging from -15 to +15.

I hope this fixes your problem with it.

Cheers

Dec 31, 2007 | Kenwood Excelon KDC-X789 CD Player

3 Answers

Dvd sound isn't working


In addition to the suggestion which I fully concur with, there is one small thing I would add. Kari you may not be aware that there is often an "internal setting" in the dvd player for its output volume. Sometimes the setting is inadvertently changed to a permanently "muted" or silent mode so that no audio can be heard. This internal setting is usually accessed by pressing the "Setup" button on your remote control and browsing through the main menus to the "Audio" or "Sound Setting" submenu. Once there you will see if the settings are correct in order to HEAR AUDIO (sound that is). Be sure to turn the "MUTE" to "off" and set the output volume to about 3/4 high setting. Then get out of setup mode and play your dvd. My point is this...on some "kareoke" feature units I have found many people mistake the front manual volume control for a DVD audio output level control when playing dvd's. This is not the case..the output volume settings are "internal" and accessible through the remote control only. Hope this helps Kari !- hattonhall

Sep 08, 2007 | RCA DRC8300N DVD Recorder/VCR

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