Will Not Power-on

[Av8r]

Device has been working fine. All of a sudden it will no longer power on. And mine does not have a pin-hole for reset anyplace on it. Used with usb/cigarette lighter cord in my car. Under the plug-in on the back is Model 4EN52Z1230 and S/N BQ6355A96485

 

[canderson]

What you have there is a Start 25.

No, there is no reset pin in the bottom. Reset is typically performed by pressing and holding the power button down until the TomTom drum sounds start, then immediately releasing the button.

I'm wondering if your battery has gone totally flat. Even plugged in, these devices depend upon the battery being at least a little bit functional.

Connect it up to a wall outlet style charger, not the vehicle charger, for a couple of hours before making the reset attempt. If the vehicle charger is faulty, that may alone resolve your problem.

 

[Av8r]

Tried a couple of different cords for two hours each and no-joy. Assume the battery is sealed in the case as I don't see a quick way to access the interior??

 

[canderson]

Tried a couple of different cords for two hours each and no-joy. Assume the battery is sealed in the case as I don't see a quick way to access the interior??

I assume that was two hours each on an AC charger (not vehicle?). Unless the battery is toast, that's not good. Might be worth a shot to replace it if you want to try to recover your device.

The battery can be a bit of a trick to access, but all of the cases do come apart. It's typically a matter of finding the two torx head screws that must be removed to separate the case.

FWIW, your device is also known as a Via 1505 when you're out looking.

I've never used NewPower99, but they do have something that shows you how the process works:

TomTom Via 1505M Battery Replacement Kit with Tools, Video Instructions and Extended Life Battery

TomTom Via 1505M Battery Replacement Kit. Comes with Tools, Video Instructions, Extended Life Battery and Full ONE YEAR WARRANTY

newpower99.com

That page also includes a YouTube video that gives the basics of replacement.

I've tended to go with batteryship.com. This appears to be the battery for the Via 1505:

TomTom VIA 1505 Battery Replacement

I'd disassemble it first using the video and take a meter to it. If you can manage to get a couple of straight pins into the connector, I would be interested to know what the voltage is between red and black wires. Can decide what to do from there.