I sent my Helix 12 Mega SI unit to the factory for work due to the SI images being very dark and just plain ugly. When I first got my Helix Mega, even with default settings the images were fantastic compared to my Gen 1 Chirp unit. I then had what I assumed was a transducer issue when I lost the left side SI and the right side was dark. I bought a new transducer and got both side images back but cery dark and no detail. I could adjust the sensitivity and contrast some to get it a little brighter but not the way it was and should be. Anyway, sent it in and they returned it after 10 days with an invoice that indicates they replaced a circuit board. I reinstalled the unit and was excited to get back on the water and do some scanning. Imagine my disappointment when I turned it on and the images were still very dark. I went back to adjusting and was able to get the image brighter but the detail is no better than my Gen 1. I have emailed Humminbird and am awaiting a response. Just wanted to vent and see if anybody has any suggestions. I’ll attach a couple of screenshots. The first is when I first turned on the unit. I like the 2nd color palette and it should be bright like in the menu and it is not. The second screenshot is what i was able to get the brightness back to but the detail is just poor compared to when I first got the unit.
Well crap, I can’t attach pics bcuz they are too big.