Replacing in-hull transducer

[Chillaxintoo]

I would like to be able to test the original transducer to see if it is actually bad or do I just have a wiring or bonding issue. I think I'm probably just going to be buying a new trans though.

[rjames]

Since it uses a standard plug you could find another depth finder that uses the same plug and try it. If I recall, I purchased a new digital depth here Standard Communications D41 Tracker Back-Mount Boat Depth Sounder / Finder Gauge | Great Lakes Skipper for $60 and figured that price was cheap, since the going rate for a mechanic is over $100 an hour, and my time is worth something, and now have a spare depth gauge, which will probably be out of stock before too long. I also dropped the new transducer over the side of the boat, to make sure it worked, before running the new cable through the boat.

[Chillaxintoo]

I already bought that exact same part from GLS. I installed it last summer only to get the -- on the display. That's why I'm hoping to be able to test my existing Trans before I go out and purchase a new one. If I just need to rebond it to the hull, or refill a fluid reservoir, I'd rather do that than buy a whole new unit at this time.

[codingparadox]

Sorry to bring this thread back from the dead, but did you guys end up finding any simple puck replacement? Investigating options, and the transom mount isn't ideal for our boats since there's no good place to run the cable through that's not below the waterline, so contemplating just replacing the stock one. Also, is the stock one mounted off center, or is it down the centerline somehow? The bottom of of my 2800 has no flat section at all, the center rib of the boat is a V the whole way down, so curious how they even did the stock one.

[codingparadox]

I researched a bunch more last night, and this looks like a great option for us:
https://buy.garmin.com/en-US/US/p/530269#box

Just wondering where the stock one is since that's presumably a calculated good location for an in-hull transducer like this.

[codingparadox]

Okay, I went out and hand-pumped the last inch and a half of water out of the bilge (I really need to go re-seal everything on the outside of this boat -- bilge keeps getting rainwater in it...) and lo and behold, right to the left of the aft bilge pump, a little puck transducer appeared! I've ordered the Garmin GT15M-IH and I'll try installing it a little further fore from the existing one and leave the existing one in place for now as a backup, just never switch it on. Can't wait for the long weekend installing a radar, a chartplotter, and a transducer...