Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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Light is out in 650

The light was going on and off- both the bulbs and the backlight for the display. now they are both off and i cant figure out how to reset. i can get new bulbs but that will not fix the backlight problem on the display. any tips

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  • Leslie Dressler Aug 25, 2013

    I'm having the same problem. The switch checks out OK but I'm only getting 2 to 3 V across the terminals. Defininitely not enough voltage to light up the bulbs and display. Anybody have any ideas?

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  • 7 Answers

Check continuity on door light switch with ohmmeter (turn off power and disconnect wire harness at switch first) Probably a second switch that turns compressor off if door open. my 690 sub zero had a bad light switch that was stuck on initially but now only works if I wiggle it. Can a person buy parts online? Some new subzeros have a fuse panel behind the compressor grill??
Just bought a used 690 and found a nice wiring diagram for a model 630 or something in a nice ziplock pouch behind the compressor grill. Look there for clues.

Posted on Jun 01, 2008

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