I have Just acquired a Go 720 which had the Poor\No Signal Reception woe. I have tried all things I can find on the net that usually solve this. Everything Else Works Great and it is in really good overall condition…looks hardly used and has no sign of ever having been pulled apart or messed with. It does not have a SD Card…everything was and is running from Internal Memory
Here is What I have Done to try and get a signal back…
- Backed up the Original Device. Updated The Device using Home. Reset the Device in the menu and also using the Hard reset Button on the bottom
- Updated the Bootloader to 5.5128 from its original 5.5120
- Full Delete and Reinstall of the system using Home. I did this twice…once following the instructions from TomTom and then from a post in these forums. The Newest Navcore that was installed is 8.351
- Between the 2 Clean Installs I Checked the Disk for Errors, Low Level Formatted it, recreating the FAT32 partition using windows 7. (Then the 2nd Clean install)
- Downloaded the Latest GPSFix files
- Ran Clear Flash Tool
- Fully Charged the Battery….placed it outside in open clear sky for an hour until the battery ran flat.
- Tried 2 Different Map Versions
Is there any hardware hack to make the Internal Antenna more effective?
Would updating to later Bootloaders or Navcores help?
Any advice on what I can try Next would be much appreciated.
Last edited by farq11; 16th November 2011 at 08:10.
Internal antenna is hardware so changing software won't help at all
Yes i am aware of that. I have done almost everything I can think of and find about refreshing the software side of the unit so that is why I was now wondering if there is some sort of Antenna Hack that I could try to strengthen the signal.
I went down the software route 1st after reading a lot of posts made by people with the same problems that updating anbd reinstalling solved it for them. Software replacement is also the route TomTom themselves will take you down for this problem. Also I read on here that some Bootloader versions were supposedly able to acquire the satellite faster, hence another reason why I asked about the Newer Bootloaders and Navcores.
I suppose I will buy an external antenna and see....
Last edited by farq11; 16th November 2011 at 10:12.
Well, i dont know if i would go so far as to say you have any hardware issues just yet. From what i understand this is a pretty common issue with Go720. I have had it happen before, I did recover from it. I just don't know how exactly i did that. On another forum, a member told me they had posted a fix for this on this forum. I have not yet found it. It had to do with deleting the quickfix data from your local tom tom installation, and "redownloading" it to the tom tom device. I dont know if it works, i think i have tried this and i have not had luck. BUT, i want to find the post before i give up. Like i said, i've fixed it before so i know it can be done.
So, i did some digging, and this thread discusses the issues pretty extensively. I am trying out the various things. The zip file offered does not download for me, i don't think it exists anymore, but there are other things also to look at. fairytooth i believe is the guy that contacted me on another forum.
It had to do with deleting the quickfix data from your local tom tom installation, and "redownloading" it to the tom tom device. I dont know if it works, i think i have tried this and i have not had luck. BUT, i want to find the post before i give up.
Thanks for helping and taking time to find the link. I had seen the post you were referring to and had already completed those steps. Even after a full format on the device, redownloading the newest GPSFix Files (as well as everything else) and putting them on the device manually, Unfortunately it hasnt worked for me this time. Just a note to add you can also delete those 3 files from within TTHome in "Manage my Device" > "Items on my computer"
Im not quite giving up yet. I am going to be taking it everywhere I go in the car for a while to see if it will pick up the signal over time, it might come back once I have ot plugged into the cig lighter for longer periods. To this point in time I have just been running it on the battery trying to find signal...and the battery isnt lasting as long as it should (45mins from full)..maybe a weak battery is the cause. I *THINK* I read somewhere 1 time that someone solved this on a similar age TomTom by putting a new battery in....I just cant find the page anymore that had that on there..if no good then Ill pull apart and inspect the antenna the and other hardware in it and strip it for spares.
Its a shame because the rest of the unit works great and as it should.
I have had poor luck now so far also, even having had it fixed once. I think something from the official tom tom release screws this thing up. Tell me if yours does this also:
You touch on the signal bars, bottom right corner. You then touch where it says how many satellites it found (probably will say 0), then on the compass you have one of the letters filled with a number, and the left most bar on the bottom row is partway filled with gray and two numbers in it? I keep getting this and i don't know what it means. I am hopefully it means it found a satellite, but i don't know. the screen before this one always says 0.
However to give you an update since I last posted here, I noticed that in the "Satellite Screen" the yellow and black ball was not spinning at all, so after googling "tomtom spinning ball" and some more research on this problem I have come to the conclusion that the antenna board is faulty, so hence there is no way to get a satellite without sourcing this with a known good working spare (Anyone have one by any chance ?). Installing an external antenna will not rectify it it seems.
So I will probably just be patient and wait for an identical model to come up with a cracked screen or other issue and make one good one out of the 2.
So in conclusion....anyone reading this in the future because their tomtom has no signal......escepcially old Go and XL models check the satellite acquisition screen and see if your "wheel" is spinning.....if it is not then any amount of "GPSFix" resets or software reloads are not going to help I'm afraid.