2 Telekomunikace 2N Access Unit M - Flush Installation Box 135220349909 but there is low volume

but there is low volume on right channel and no signal from video outputs

Manufacturer SMC Model Number CDJ2E16-200Z-B SKU 19-47657 Ref 23-66497

Manufacturer Cole Parmer Model Number 48920-40 SKU 19-43012 Ref 23-59204

Manufacturer Crestron Model Number DM-DGE-200-C SKU 19-73271 Ref 23-105067

Microphones are in good condition and are guaranteed

2 Telekomunikace 2N Access Unit M - Flush Installation Box 135220349909 but there is low volumeCondition Used Description Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in excellent condition showing minimal signs of previous use. Includes 2 Telekomunikace 2N Access Unit M Flush Installation Box as pictured. No additional items or accessories are included. Pictures are of one of the actual units available. Inventory is on hand and ready to ship. Please feel