Thread: Equipment cutting out?

Originally Posted by majflyboy

That has the same effect as a weak battery. But, that being said, when my HB788 is turned on on the bow and I crank the big motor, the 788 goes off and stays off until I press the power button again, and I have a brand new cranking battery that stays charged.

I had the same problem. Sold my HB and kept my new crank battery.

Originally Posted by Cane Pole

I had the same problem. Sold my HB and kept my new crank battery.

Same thing used to happen with my HB's all the time. I sold the boat, gave away the HB's with the boat. Replaced the boat, and bought Lowrance HDS units for the new boat.
May have been a bit of an over reaction on my part, but had to justify buying a different boat/electronics.

Bad, dirty, corroded or loose wiring connections cause more problems on a boat than anything else.

Originally Posted by Barnacle Bill

Bad, dirty, corroded or loose wiring connections cause more problems on a boat than anything else.

That's for sure! I use the same Humminbird and Garmin on 2 different boats. One boat I'll have the shut off due to starting the engine with the H/B, and one I won't. I know it's a bad connection somewhere, as my Garmin and H/B unit show 2 different voltages on the boat with the start up failure. Too dang cold now to fix it.

I'm still having problems. My lowrance will restart while the motor is off every now and then. My new VHF I just installed will say high voltage when I rev up the big motor. Both are straight wired to the cranking battery.
My cranking battery is five years old. Should I try a new battery first?

Five years is kinda old for a boat battery.

yep 5 YEARS . i never run anything on my cranking battery . one time i had to switch the finder to cranking becouse the TM was interfearing with the bow mount finder

Yea, I would say battery. But I always wire my devices to the battery with an in-line fuse for that device. Each device has it's own power feed. Works for me with none of the above problems. I also wire all devices to the starting battery.