Humminbird fisfinder

[J Mac]

I have a humminbird fishfinder on my 17.5. It has worked perfectly but this summer it just stopped displaying on screen. It make a faint beep when I try to power up but nothing come up just a blank screen. Is it time to replace. Can I just replace the unit and keep the rest or is it best to replace all parts
Thanks
John

[seabob4]

3, if you replace the head unit with an identical or similar model from the same vintage, it's just a matter of un-plugging the old, plugging in the new.  HB has been pretty good over the years in keeping the ducer and power supply plugs the same.  Check ebay for a replacement head unit, a lot of the ones for sale cheap on there don't come with the ducer or the power cord...which you don't need...

[slvrlng]

I would try and hook it up directly to a battery to see if that makes a difference. Could be corrosion in the wiring keeping it from getting full flow of juice.

[GoneFission]

Ditto on what Lewis said - check all the connections carefully - beep and off usually means low voltage.

[fitz73222]

Depending on model, Hummingbird has some fairly reasonable service costs and flat rates. In some cases, hundreds of dollars less than a new replacement. If you go to their website you can look up your model and determine the max service costs and decide the economics. If its 5 or 10 years old maybe not but its worth a look before tossing it.