failing self test

Did you try calling

Pacific Medical

800-449-5328

http://www.pacificmedicalsupply.com/Philips_Telemetry_M2601B_with_SpO2_p/nm2601b-spo2.htm

or

BMES

888.828.2637

http://www.bmesco.com/philips-m2601b-telemetry-transmitter-s01ecg-only-p-15.html?osCsid=94d0bb725d60aabb22aff78ae5ec4f66

I belive they can repair them.

Thanks for your interest in an alternative to exchanging your M2601B Telemetry Transmitter.

We repair the entire line of Philips Telemetry Transmitters including the 2601A, 2601B, and 4841A.

If we can help, call us at 800-449-5328!