Navigation screen beeps when I touch it, but why does it remain black?

First, do you hear beeps when you press a selection on the screen? If yes, then your speaker is OK and the audio circuits are OK in the unit. Make sure that you have a voice selected in the voice menu. Some units have an audio mixer screen and provide different volume settings for navigation (voice) and system (beeps). maybe the volume for the voice (navigation) is set to off. If you don't hear any beeps when you touch the screen AND you don't hear a voice, make sure that the sound isn't set to be muted. If the sound isn't muted, you may have a defective speaker. More information on audio issues can be found here:
SHARCNET USA Out of Warranty GPS Digital Camera Repair

try taking a small flashlight and hold it to one edge of the screen on an angle and see if you can see a faint image of the screen. if so your backlight is gone.

I guess you can't go into start button. /anyway how did you know if computing is powered? On your keyboard top line keys have screen control keys for brightness etc.eg f4. try.

Goto Menu then Profiles you see a red dot on General. Press options on lower left of screen and Edit. scroll down to Flip Beep and click it then scroll to Silence and press Select on lower left of screen. It worked for me.

Hi,

Here is a tip that explains what can be happening to make the dehumidifier showthat the bucket is full when it is not.

Dehumidifier Problem It shows Bucket Full

heatman101

The beeps come from the BIOS. Check the connectors of the screen, if it is well connected.

the touch screen does work

The beeps are a result of the POST (Power On Self Test). Follow this link to a list of beep codes...
http://www.computerhope.com/beep.htm

Remove the memory from your unit - power it up it should beep if full communication is still happening across your m/board. No beeps you board has died. if it beeps and your using two diffent memory modules just fitt one leave the battery out and power it up = if no display pull power swap out the memory and try again. if display occurrs you have a defective memory module - throw that failed unit away

glenn

Installing the DVD Map Disc Your dealer/retailer may have installed the map DVD. If the map DVD was not installed, do the following to load it:
Read the following steps completely.

1. Turn the ignition on. The vehicle must be in P (Park) to perform this operation.
2. Press (power) to turn the navigation system on.
3. Press the NAV hard key.
4. Touch the Insert Map Disc screen button. The screen opens to access the map DVD slot.
5. Load the map DVD partway into the slot. The system pulls it in. The screen cannot be closed until a double beep is heard.
   Notice: Pressing directly on the navigation screen may cause damage. Repairs would not be covered by the vehicle's warranty. Do not press directly on the navigation screen.
   
6. To close the screen, slightly push up on the two outer corners until the screen is in position. Then push the screen in by pushing on the four outer corners until a click is heard.
7. Set the search area. See "Setting the Search Area" earlier in this section.

Ejecting the DVD Map Disc The navigation portion of the system cannot be used if the DVD map disc is not loaded.

1. Press the MENU key to enter the Menu options, then press the MENU key repeatedly until Nav is selected or touch the Nav screen button.
2. Touch the Map Database Information screen button.
3. Touch the Eject Map Disc screen button. The screen tilts, exposing the map DVD slot.
4. Press the eject button, located next to the DVD map disc slot, and the disc ejects. Pull the disc out. The screen cannot be closed until a double beep is heard.
   Notice: Pressing directly on the navigation screen may cause damage. Repairs would not be covered by the vehicle's warranty. Do not press directly on the navigation screen.
   
5. To close the screen, slightly push up on the two outer corners until the screen is in position. Then push the screen in by pushing on the four outer corners until a click is heard.