Sigma wireless bicycle computer. Model BC 1606L. Wireless cadence monitor has abruptly stopped working. All other functions of this unit working perfectly. Transmitting unit and receiver have new batteries. Receiving unit contact with handlebar base unit have been cleaned. Any assistance appreciated. thanks

It's available from the Sigma Sport site.
The link is in the menu on the right.

Traditionally the front. Some units are wireless, but have a minimal range and cannot transmit through the riders obstruction. Most cabel harnesses will route up the front brake line.

If you are desiring it to work on a "trainer", its best to invest in a cadence (crank arm rpm)sensor. Your speed is not as important on the trainer, but monitoring your cadence in relation to your heart rate is key.

I had the same problem. It is caused because the mount is facing the wrong direction and your computer is swapping speed and cadence. 5 mph would mean 63 RPM of the wheel which probably what your pedal is actually doing. The wheel is actually turning at about 3 times that rate so if you check your cadence it is probably maxing out at 180 even though that wouldn't be possible.

To fix this, just twist your mount 180 degrees on your handlebars or stem and try again. That way the computer is correctly lined up with the mount.

http://www.sigmasport.com/en/service_center/produkt_support/bikecomputer/fragen/?jahrgang=4&produkt=67&gruppe=1&sprache=2&typ=bikecomputer

See the page (16 of 50) where they talk about selecting MPH or KPH. It's prompting you to confirm a choice.

RTFM.

Find it here...
http://www.sigmasport.com/en/service_center/produkt_support/bikecomputer/?flash=1&typ=bikecomputer

Well, it IS wireless. Perhaps the distance or line-of-sight isn't right. As a test, hold the receiver in your hand and hold it closer to the spinning wheel transmitter.

Here is the link to Sigma Sport. They have a good customer service and I would discuss directly with them. That way whatever is determined you cut out several steps and either get the unit replaced or fixed properly with advice that is direct from the source.

This may also be a warranty situation in which case again you will eventually need to go through Sigma Sport.

You have done all the normal things that make sense to diagnosing the problem, sounds more like the problem is internal. One thing to also keep in mind, electronics like this do wear out and sometimes they just start to die off. This may also be the case, but Sigma Sport will be able to tell you.

Good luck

MAKE SURE THE MAGNET PASSES THE SENSOR AS CLOSE AS YOU CAN GET. SAY 3 TO 4 MM.

http://forums.roadbikereview.com/showthread.php?t=120409

you can measure your wheel by placing your bike on a flat surface with the valve stem on the wheel in the bottom most position or 6 o clock position. mark the floor where the valve stem is. now roll the bike forward so that the wheels gets one full revolution and the valve stem comes back to the 6 o clock position and mark the floor at the valve stem. now get a tape measure and measure the distance between your two marks. Convert this measurement to usually centimeters. that will be the number that put into your computer.

Rick

Bicycle Parts and Accessories