SkyKop,

If the problem persists, the TEMS unit will need to be looked at by PST in Thailand or by Kelly in Canada. The red LED is the rpm sensor sensitivity and has no related function with the R/C signal. Remember that the TEMS only look at the R/C signal coming from the Rx thru the cable. The problem is that the TEMS is not seeing a good R/C signal...either weak, intergerred, or failed safe condition. Anyway, please keep us posted and we are ready to help if it ever comes to sending the unit in.

Kraivuth S.