Speedo sensor fix TZR 50

Found a fix for my broken electronic speedo sensor.

Bike is a TZR 50 but I guess same fix is suitable for similar speed sensors

on other models.

The sensor is on a small PCB buried in a plastic plug that is held in place by a small metal pin in the

front wheel speedo assembly.

If the wiring is OK and the sensor is the suspect it can be changed out if you are good at soldering small

stuff and up for giving it a bash yourself.

Replacement part is a small 3 leg IC made by Allegro Microsystems, part number A1220EUA-T costing a couple of quid.

Data sheet on the net.

Part needed center leg bent underneath to match PCB. After testing shows it is working, best to cover in glue to secure and encapsulate the circuit.

see http://www.louiiv.pwp.blueyonder.co.uk/Speedo_repair/repair.html