KitchenAid Food Grinder Attachment (Lot of 4) 135196832782 but there is no signal

but there is no signal from channel 3 and 4

Manufacturer Stoelting Model Number U431-30912 SKU 19-71512 Ref 23-102998

Manufacturer N/A Model Number 2KBP06M SKU 19-48870 Ref 23-68358

Manufacturer Freedom Scientific Part Number 461553-007 C Model Number F40B5 SKU 19-79731 Ref 23-115011

KitchenAid Food Grinder Attachment (Lot of 4) 135196832782 but there is no signalCondition Used Description Includes: 2x: FGA 2 Meat Food Grinder, (no screw caps) 2x: Food Grinder (no model on these) With 2x Screw Caps 3x: Grinder Worm Attachments Slicer Attachment Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. No additional items or accessories are included. Photos