Thread: Gps not turn on and will not start

Originally Posted by kitos

A lot of desire to see your new articles and repairs of tomtom, I would like to learn much more about you =).

The great part of repairs can be fixed by changing a certain diode?

Not by changing diode but adding a small charging system for the lithium battery like the TT One write up.
I tried replacing a diode and it still would not charge due to the charging regulator circuit not working.
I believe it is that circuit that burns up the diode when the circuit malfunctions.

Could you explain how to check them with the multimeter? Do you need to desolder it from the motherboard?

You check for voltage drop across the diode if you have a multimeter that can test a diode.
Also you can do a resistance check if your multimeter has no diode test function.
See this site for info [Only registered and activated users can see links. ]

Is your XXL the big screen model? The big screen is the 5-inch screen. I think that TT XXL had both 5-inch and 4-inch screen
models?. The 4-inch screen model should be similar to this information that has pictures of One XL
that has the D5 diode. [Only registered and activated users can see links. ]

Just completed the charging board repair on the GO 920 similar to the TT One that is already listed in this thread.
It won't be very helpful for your TT XXL due to different design. Will be posting the pics this week with some additional info regarding
wire routing and case clearance because it is very tight fit.