Go750 won't auto-dim


Joined
Dec 25, 2016
Messages
4
Country
<img src="/styles/default/custom/flags/nz.png" alt="New Zealand" /> New Zealand
TomTom Model(s)
go730, XL
I have a Go750 that I've recently fitted a new digitiser screen to as the original one was playing up and not accepting commands correctly.
With that now sorted I went to use it last night and noticed that it won't auto-dim when it starts getting
dark.
The unit has a light sensor so I would expect it to do so.
The user guide says it will, but I've just done some research and several posts I found suggest that despite
this GPS having a light sensor, it won't auto-dim.
One post suggested that it's because Tomtom couldn't (or wouldn't) sort the issue and reverted to using a
lower spec firmware which doesn't support the auto-dim function.
Does anyone have any further info on this, or a way to enable the auto-dim?
 
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Any chance that the light sensor didn't get plugged in properly during disassembly/assembly? I assume it was auto-dimming prior to the surgery? I can't recall how the 750 managed that process. Some in that vintage used sensors, and some used time.
 
Any chance that the light sensor didn't get plugged in properly during disassembly/assembly? I assume it was auto-dimming prior to the surgery? I can't recall how the 750 managed that process. Some in that vintage used sensors, and some used time.

Well that's one of the problems. I don't think I tested the dimming function prior to surgery. The light sensor will be soldered directly to the main board - it won't be a plug-in extra.
After playing around with the settings I got it to dim at night, but it's doing it based on time - not on the ambient light level.
 
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Sounds like the 750 was the first to use dawn/dusk time rather than the sensor. I'm still not remembering where the cut was between the 730/740/750 designs in that regard.
All current models use dawn to dusk timing to adjust brightness and color scheme for night use.
 

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