A few things.... 130 on white paper... Should be 156... so Dirty Board Sensor... Inside the lens????? Or a snapped off LED....

At any rate, if it was ME.... I would remove the sensor and cut the back flap off the sensor and remove the window and clean it... put back in and seal with Masking Tape, catching the edge of the window...

Remember a BAD FSC Cable can do this too as in a ZERO reading or Intermittent Reading... As the cable flexes...

Dirty Window first... Walnut dark... Cover with masking tape where it measures then stop machine and remove tape.

Good Luck,


AL