In circuit, with the meter off the movs and thermistors etc measure:
RV1 7 MOhm
RV3 4.70 MOhm
RV2 3.77 MOhm
Fusible resistor 1045 Ohm
RT1 1103 Ohm
RT2 983 Ohm
All three MOVs, R1, R2, and R3 are bad. You can remove them from the 117 for test purposes and the 6 and 60M ohm readings should be within spec. All three MOVs, out of circuit, should read 0L resistance with another working meter.
The fusible resistor and two PTCs, RT1 and RT2, are fine.
Report your findings and if the removal of the MOVs fixes the problems, then we can suggest replacements from mouser/digikey.