SK.. in Frozen Cold Western Canada | It has been my experience with such things, that 'quite typically' it is a Bad Inline Connection/ Loose or Corroded Ground that will often cause such things.. If you have a Wiring Schematic and a Multi-meter (and are a bit fluent in Wire-ese) you can get a long way through things fairly quickly on some older machines.. Barring that, I would suggest disassembling some suspected connections, cleaning as much as you can with a little Brass or Stainless (toothbrush sized or smaller if you have/can find) and some Contact Cleaner and Compressed Air to remove offending Dust and Crud..
** Also, if you KNOW which Sensor controls the Light/Buzzer you could 'short it to ground' and see if light goes ON or OFF _ if the sensor/connection is the culprit, shorting to ground will achieve ~ 0 ohms as opposed to a Larger or Open Connection with enough Resistance via Corrosion, etc _ if it goes OFF when shorted, it is likely a dead/dying sensor, or Dirty right there and may change when re-assembled even once corrosion disturbed!!
Good luck _ hope it might be a simple fix after all _ often is for me it seems lately!! |