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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canderson

Moderator
Joined
Dec 28, 2007
Messages
11,333
Location
Colorado, USA
TomTom Model(s)
GO720, GO740TM Live, GO 1535 Live, Via 1535, Via 1605, GO 52, GO 600, GO 620, GO 630, TomTom Bridge
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.
 
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
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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canderson

Moderator
Joined
Dec 28, 2007
Messages
11,333
Location
Colorado, USA
TomTom Model(s)
GO720, GO740TM Live, GO 1535 Live, Via 1535, Via 1605, GO 52, GO 600, GO 620, GO 630, TomTom Bridge
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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