Question about Garmin GPSMAP 178C Sounder GPS Receiver

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The lcd screen on my gpsmap 178c is defective, backlight is ok, where can I buy a new one? Or does anyone have the fabrication name and number of the screen? Garmin doesn't support any longer

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Posted on Jan 02, 2017

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SOURCE: would like to buy a garmin gpsmap 178/178c owners manual

Contact Garmin and they will sell you one.

Posted on Apr 15, 2010

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SOURCE: My Garmin GPSMAP 178C screen backlight failed

Backlight problem: Remove the display, remove the light tube from behind the LCD. Buy a led panel from Ebay for around $5 and install it behind the LCD under the drfusing layers. Run the wires out to a 12 VDC source and there you have it.

Posted on Sep 15, 2011

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1 Answer

Why does my screen blink all the time on my 178c sounder
check your power connection, if that is still good your unit may be dying

Jul 05, 2014 | Garmin GPSMAP 178C Sounder GPS Receiver

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Garmin GPSMAP 178C not boot
can we download india map?if tell me how to download and install the map in my device Gm4300?

Nov 20, 2013 | Garmin GPSMAP 178C Sounder GPS Receiver

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Replacement LCD screen for garmin gpsmap 178c?
I need the screen replacement for GARMIN 178c

Aug 17, 2012 | Garmin GPSMAP 178C Sounder GPS Receiver

1 Answer

I have used the Gpsmap 178c for about 3 years now. Recently I have started be unable to find satelites, wass on or off. Once in a while it works. presently I get no satelites I would buy a new antenna...
Based on the problems I have seen with this unit the problem is the reciever circuit not the antenna, so you should consider a new unit, Garmin charges a fortune to repair these.

Sep 22, 2010 | Garmin GPSMAP 178C Sounder GPS Receiver

1 Answer

My Garmin GPSMAP 178C screen backlight failed
Backlight problem: Remove the display, remove the light tube from behind the LCD. Buy a led panel from Ebay for around $5 and install it behind the LCD under the drfusing layers. Run the wires out to a 12 VDC source and there you have it.

Jul 13, 2010 | Garmin GPSMAP 178C Sounder GPS Receiver

1 Answer

GPSMAP 178C Sounder GPS Receiver: My 178C will not stay powered up. I just replaced ...
I had the same problem with mine. It is caused by a crimped wire on the internal harness inside the machine. I opened it up and discovered that when originally put together 3 of the wires from the plug were crimped. One was broken off. The only way to fix it is to open it up, restrip the wires place a piece shrink wrap on before you solder it back and then make the shrink wrap flush with the back of the plug and heat her up. And, Voila... no more intermittent operation. Hope this helps? John

May 18, 2010 | Garmin GPSMAP 178C Sounder GPS Receiver

1 Answer

Would like to buy a garmin gpsmap 178/178c owners manual
Contact Garmin and they will sell you one.

Feb 20, 2010 | Garmin GPSMAP 178C Sounder GPS Receiver

1 Answer

Garmin 178C Boots up then shuts off
I've had a similar situation with a Magellan, it would power off despite being plugged in.

Its usually a battery issue, perhaps its not getting enough power? You could try to unplug it and do a "hard battery reset" depending on the type of battery. Keep turning it on and let it run out, until it wont even turn on anymore, after that plug it into a charger while off and allow it to charge completely. Turn it on, see if it still shuts off.

Good luck!

May 26, 2009 | Garmin GPSMAP 178C GPS Receiver

1 Answer

Garmin 178C Boots up then shuts off
Check the pins at the connector on the back of your unit. Make sure one of them is not bent or broken off. One of the pins on mine is missing about 1/16" of the tip. My boat repair shop says it's the power lead, but Garmin wants $200 for a generic repair.

Oct 18, 2008 | Garmin GPSMAP 178C GPS Receiver

1 Answer

Dark Screen
almost all LCD use a flourescent lamp, some very new and expensive types use OLED.

Dec 12, 2006 | Garmin GPSMAP 178C GPS Receiver

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