Lowrance LCX 27C Problem

[buckbrush]

I have a LCX 27C that Im having a problem with. The bottom shows up ok, structure and brushpiles are very faint. I bought a new transducer, still does same thing. Seams like sensitivity is not working right. Please help.

[Barnacle Bill]

Make sure your software is up to date. LCX-27C Software Update 2.5.0 | Lowrance
If it is try doing a hard reset.

Hard Reset (Deletes stored GPS Data
such as Waypoints and trails)
LCX 27C Reset
1. Turn unit OFF
2. Press and hold the ZIN&ZOUT Keys
at the same time
3. Press and hold the PWR key
4. Release both buttons when the USA map appears

[NLC25]

I've had a similar problem with my LCX 27C. The software is up to date. Lowrance looked at the head unit.

The most consistent problem is that is starts flashing in depths over 40 feet and won't register anything. It rarely registers while on plane. Other times it starts flashing no matter what. Finally, sometimes it will register but with a mostly white screen...barely showing the bottom or structure.

Bought a new transducer over the offseason, hopefully that is the trick.

Does anyone else have any theories??