Question about Humminbird 757c Combo

Open Question

My 757c will not power up

Turned my 757c on and it did not power up. I have removed it from the boat with the wires and went directly off the battery and still did not get power. I had power in the wires but did not get the 757 to power up.

Posted by on

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My underwater lights when I wire directly to the battery the wire gets hot


Hi Buddy:
The lights will be drawing more power than the wire is rated for.
I'd suggest that you increase the wire size, or use smaller bulbs.

Oct 13, 2015 | Boating

1 Answer

I have a 1996 150 johnson outboard fuel injected motor , the red wire with purple line and a purple wire that get hot when trying to start. and wont start. What do the wires go to?


Red wire w/purple tracer is 12 volt (+) supply to ignition switch. Purple wire is switched 12 volts that supplies 12 volts (+) to the circuits that are turned on by the ignition switch. If they are getting hot something in one of those circuits is drawing excessive power. This should cause the engine fuse to open the circuit to protect any damage. These early direct injected engines are very sensitive to voltage deficiencies. I would begin with the battery: make sure it has sufficient cranking amps, more is better. 800 - 1000 Cold Cranking Amps is a little more than minimum spec but that is what I would recommend. Make sure the battery connections are clean and secure, NO WING NUTS! Battery connections should be secured with an external tooth lock washer at the bottom of the stud followed by the engine cable so the washer bites into the lead and the cable lug. The cables should be marine quality tinned copper with a secure connection to a tinned copper lug. The cable must be sufficient size for the distance run. These engines and the electronics they are equipped with require good clean 12 volts. They can sound like they are cranking fast enough, like the battery is strong enough and not have enough to power the ECU/EMM and injectors. The major benefit of the newer E-Tecs over these early Direct Injected and Ficht outboards is the stator output and its ability to power the electronics without the dependency on the battery. The battery cranks the engine and the more advanced stator and flywheel magnets supply the voltage for the electronics.


Hope this helps. Make sure the correct fuse is installed in this engine. There are multiple fuses in the power distribution panel on the starboard side of the engine. They are all 10 amp ATM fuses.

Aug 29, 2013 | ENDURACover Boat Covers Javelin Boats 367A...

2 Answers

CDX-M20 marine stereo problem


Same problem here. Do you recall what you did to bring up the display?

Apr 20, 2012 | Sony Cdx-m20 Marine In-dash Boat Stereo...

1 Answer

My tilt on a yamaha ox66 200 motor quit working,what should I try first?


Step 1:

Operate Trim Switch Do You Hear Clicking Sound In Engine
Yes ,No

Step 2:

If Yes Check Wiring To Power Trim Motor are All Cables Tight
If No Then The Trim Relay And Or Trim Switch Is Probably At Fault

Step 3:

,Remove Three Large Color Wires Going To Power Trim Motor Black, Blue And GreenConnect Black Direct To Negative Battery And Blue To Positive Battery Motor Should Trim Up ,Remove Blue Then Try Green To Positive Battery, Motor Should Trim Down ,If Nothing Then Trim Motor Is At Fault If Works Then Trim Relay/s Are At Fault

Jul 03, 2010 | Boating

2 Answers

We have a brand new Bayliner 210. Our boat battery had been fine until we hooked up the Garmin 160C. Today when we got to the dock the boat battery was dead. Does the Garmin use boat battery power when it...


Hello there:
they do use some of the battery if it is wired into somthing that feeds directly off the battery i would recomend getting a battery disconnect switch this way when you turn off the switch the whole electrical system will be disabled. go to www.westmarine.com they have them listed on their website even though they might not be local you can get a idea of what you are going to be looking for ok?
best regards mike

Aug 16, 2009 | Garmin FishFinder 160C Mounting Unit

2 Answers

My son and his buddy recently installed an amphlified stereo system on our center console and there is something strange going on that I can't figure out. It is a Clarion stereo with a JBL amp. The boat...


If a boat is anything like a car, the amp's negative post should not be connected to the battery, but to the ground of the boat. In a car, the entire chassis is grounded to the negative terminal, so when you run a line from the positive terminal of the battery to the positive post on the amp, and a line from the negative post on the amp to the chassis it is a complete circuit. I highly recommend placing a fuse on the positive line from the battery to the amp. Wiring this way prevents the amp from blowing up your battery, as well as prevents the battery from blowing your amp. Hope it works.

Jun 25, 2009 | JBL Boating

1 Answer

Radio works on tech bench, not in the boat


Yes, the yellow wire is the switched hot lead - it is typically connected in one way or another to the ignition switch. There is also a smaller gauge red wire that is connected directly to the battery (through a fuse of course). Both of these wires have to have power for the radio to work. Also the black wire has to be connected to a good ground. If all three of these wires are confirmed to be in good order (power where there should be power, ground where there should be ground and no shorts) the radio should at least power up when they are all hooked up and the ignition is on.

Jun 16, 2009 | Clarion Boating

1 Answer

Power goes on and off-flickers


That is most likely because the radio is drawing more power than the wire can provide. First make sure you have good connections, especially a good clean ground. Next make sure the power wire from the boat is at least the same size or thickness as the power wire on the radio. If that doesnt work, you may want to wire the radio directly to the battery, using an aftermarket inline fuse and wire available at any car audio store.

May 24, 2009 | Clarion M475 CD Player

1 Answer

I have a 90 Horse power Mercury outboard Boat motor on a skeeter boat and the startes cylinoid is just making a clicking sound but the motor won't start . Do you think it could be the starter?


Sounds like the starter. Check if you have power at the solenoid from the battery with just the power on (key turned on, power switch on.) thats good-- you have power-- if not you have a wiring problem from your battery or main switch.

Otherwise you have a starter problem probably.

May 14, 2009 | Boating

Not finding what you are looking for?
Humminbird 757c Combo Logo

Related Topics:

26 people viewed this question

Ask a Question

Usually answered in minutes!

Top Humminbird Boating Experts

Phil Walker
Phil Walker

Level 3 Expert

605 Answers

Steve
Steve

Level 3 Expert

693 Answers

fordexpert

Level 3 Expert

5495 Answers

Are you a Humminbird Boating Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...