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I have a HB 788 DI that I bought last spring. It will not read speed below one and a half mph. I have talked to the factory several times since I bought it and they said they could not recalibrate it and there was no software that I could buy to fix the problem. I need it to read four tenths mph, give or take. Anyone have any suggestions other than buying a 998 or 999. I already know the 788 has been discontinued. I have an older 788 that reads fine.
Have them refund your money and buy one that will do the job.
What he said .......I assume you bought it new----RETURN IT----Tell them its malfunctioning--I dont think you would be lying..Quote:
Originally Posted by ATM
I just called customer service again and they told me there was nothing wrong with the unit. That I would have to be going at least 2 mph for the gps to function properly. I know that's not right because I have a unit that reads right. I asked about going to a 998 or a 999 and they told me that they were the same.
Have you tried connecting the GPS Receiver from the older 788 unit to it to see if it still does the same thing or not?
I bought a 788 HD DI and had ALL KINDA TROUBLE with the GPS right outta the box. Sent it back to'um and they couldn't figure it out. They sent me another unit and I wasn't pleased with it either. I finally put an external HS antenna on it and it helped.Quote:
Originally Posted by stormcloud
Your unit should read/show something plum down to 0.0 mph. If it don't, me and somebody'd be get'n sideways over it! You pay that kinda money for something it should WORK!
Greg, the older unit is pulling from a built in transducer on the trolling motor and the new one is pulling from a different one on the transom. They told me the new unit would not work on the front transducer.Quote:
Originally Posted by Humminbird_Greg
I didn't answer your question. No I haven't. Is it ok to switch them? Is the only thing that won't work the DI.Quote:
Originally Posted by Humminbird_Greg
The GPS doesn't have anything to do with the transducer. It's located in the head, unless the 788 has external receiver?
I dont know who you are talking to but they are wrong or you are confused. They read from .1 up. Here is a pic to prove it. I also had a 788 that was crazy in the past. The 788 is your problem.Quote:
Originally Posted by stormcloud
Maybe I missed it in there somewhere, but is your problem unit a internal GPS antenna unit? These sometimes have issues with GPS speeds under 1.5 mph or so. You can switch the unit mount with the older 788, if it has an external GPS antenna it should fix the problem, if it does help, you can buy a y cable to run both units off the external antenna. Hope this helps!
Guys I have ridden this horse to death so I'll back off. I got a spring catalog s little bit ago and in the HB section they are showing pictures of the 900 series that you can read the mph at .02. There is someone somewhere who can help me. I just don't know who that is. I am not confused, I know what several customer service technicians have told me.
If Humminbird actually told you that you must have done something to really whizz them off. Go buy a Lowrance, problem solved.
And you may still be confused. I've never heard of one reading 1/100 mph. 1/10 mph? Yes, but not in 1/100 increments.
Both are internal.Quote:
Originally Posted by Brn2fsh
Sorry, was .2 (2/10ths)Quote:
Originally Posted by ATM
That external GPS antenna with the Heading Sensor will fix your problem. Did mine. Shame a man's gotta spend another $160 to fix something that shoulda worked in the first place.
Here is a new 859 in action today.
Do you have (or have access to)...an external GPS antenna...??Quote:
Originally Posted by stormcloud
Rickie
Talked to Jimmie at BPS today. He told me the same thing HB told me. The units with down imaging and or side imaging are not reading at slow speeds. He said one customer has to get his boat up to 8 mps before it will read right. Congratulations to all that have one that works. Mine doesn't. I can use everything on the unit but the speed so I'm going to keep it. That being said, I'm disapointed but done. BTW Ronnie Capps gave an hour and a half presentation at BPS/Memphis today. He did a good job. Good crowd with a lot of questions and answers.
Rickie, I do not but the reps I talked to said it may or may not help. Parts changing. Been through that with pickups. Let's just let it die. I sincerly appreciate the help you guys tried to give me.Quote:
Originally Posted by rnvinc
I have a 788 I have had lots of problems sent it back added external directional antenna . That helped then added the far rite ring on the power lines and it still acts up with the trolling motor on
Looking for a ranger boat the 788 will probably stay on the old boat
Will not get another one