Holux GPSlim 240 has been bought to be used with a mobile in the car as navigation system (with TOMTOM software). It's broken when it was connected to the car battery.Holux GPSlim 240 has been bought to be used with a mobile in the car as navigation system (with TOMTOM software). It's broken when it was connected to the car battery. Then I decided to open it to see how it was inside.
Here you have, a Bluetooth module (small top part), the antenna (the plug only) and the master board with the GPS module and the power controller (to recharge the battery).
Antenna
top side
Here, we can see the GPS chip: SiRF Start III
It was easy to find the faulty component, a Tantalum capacitor (22uF 6.3V case A - J226), easy to find and replace and not expensive, a good point!
the Bluetooth removed form the mother board. Should be use with the NG as BT module.
bottom side. During the unsoldering operation, some spots were destroyed but it should not be a problem for the next usage.
the mother board (GPS module) without the BT board. Here again, some spots were destroy during the unsoldering.
better view of the ship SiRF Star III.
After the Tantalum capacitor replacement, the GPS is plugged to the battery and YES, the GPS works: the orange LED (GPS) starting to blink when it receives the satellite signal!
Power socket and data port, next step it'll be to connect the GPS module to the NG.. but I've to make the NG before ;-)
Power supply details
unsolded mini-usb connector (origin) and replaced by a 1.25mm pitch picoblade header, right angle Molex connector (compatible with the SB of the NG).
top view of the new Molex connector. The +5V input is not connected to the VCC pin. A bridge is made from the +3V battery connector to the VCC pin. With this small mod, the GPS should be fully compatible with the SB
Memory chip: EON EN29LV400AB 70BIP (on the top)
Bluetooth chip: RF Micro Devices - SiW3500 GiG1 (on the top)
