John A Frackville , PA July 15, 2015 Appliance: General Electric Electric Range JBP90BF2BB Ge Range Jbp90bf2bb: Could not use all the numbers on the touch pad for the oven or the timer. How to replace Crystal Membrane Asm. Had to order a new crystal membrane assembly----was told by the mfg no longer available Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes