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ContinuousWave: Small Boat Electrical
Humminbird display fogging
|Author||Topic: Humminbird display fogging|
posted 08-07-2008 12:57 PM ET (US)
Anyone had trouble with the display on HUMMINBIRD SONAR fogging? HUMMINBIRD says a little fogging is normal due to natural humidity and the air inside the unit screen. Sounds like a design flaw to me. Anyone experience this with other manufacturers?
Any way to fix the problem?
posted 08-07-2008 01:10 PM ET (US)
A friend and myself both have 765's with the same fogging problem. I got the same answer as you did from Hummingbird. It does go away quickly though..
posted 08-08-2008 07:48 PM ET (US)
I had a HUMMINBIRD (still do, though it's not on the boat
anymore) that got a fog on the inside of the screen. Well
after the warantee ran out, I opened it, wiped it off (it was
sort of fine white powder) and put it back together.
posted 08-09-2008 08:46 AM ET (US)
I do not recall any problems with the display of my SONAR or my chart plotter having condensation or fog.
posted 08-09-2008 09:14 AM ET (US)
Have had this problem on 3 occasions with
Navman GPS, Navman Fish Finder, Navman Combination
Fog up in rain or high humidity ? to a point where its impossible to view, stopped it briefly on latest combi by putting "vaseline" around seal
All the units were 2nd owner so no warranty
But does seem to be a problem with several makes
Paul (Wales, UK)
posted 08-11-2008 09:30 AM ET (US)
I had this problem with my Humminbird 3D Vision. I returned it to Humminbird, out of warranty, and paid to have it fixed. About a year late the same problem recurred. I took the display unit, loosed the screws to crack the "seal", put the whole thing in a zip bag with a pack of silica gel and left it for a couple of months. After it cleared up I opened the case and put a small pack of silica gel in a void, resealed it and haven't had a problem since.
posted 08-14-2008 01:36 PM ET (US)
I am not a big fan of Humminbird products. Had the same issue on the depth finder I had on my montauk. Fixed 2x's by humminbird. No more "birds" for me. Never had a problem with Garmin..
posted 08-14-2008 02:38 PM ET (US)
As others have stated, fog seems to happen and it is not abnormal (but still unacceptable).
The good news is the moisture should not affect the electronics. Most electrical boards are "sealed" with a non-conductive spray (coating) that seals all the individual circuits in place.
In fact some circuit boards can be rinsed off if they get salt water on them. (I am not saying ALL boards and screens can be rinsed, but most can after unplugging power and other ribbon cables.)
My solution has been to open the unit up to "air out" on a hot sunny day. Or I will remove the unit and use the oven to dry it out. Turn the oven to warm, and then subsquently turn it off and put what ever you have on a cookie sheet with the oven slightly ajar. (And of course the unit needs to be cracked open, and batteries should be removed if there are any.)
The cleaning with rubbing alcohol and the oven techinique has revived several dunked cell phones and a handheld GPS.
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