output voltage temperature transducer

huangyhg

output voltage temperature transducer
i have some questions on what internal components could affect the output voltage of a temperature transducer.  in particular causing the output to spike and than go to 0 or just to go directly to 0 or no voltage output.  my background is mechanical, but i have been tasked with solving this one and electronics is not my strong suit.  any information would be greatly appreciated to help me at least get pointed in the right direction and concentrate my search on the correct components.
thanks,
major
do you know what sort of transducer it is.  thermo couple, thermistor, semiconductor.