Integra DTR-50.3 A/V Receiver For parts - Does not produce sound

Denon AVR-X1800H 7.2 Channel 8K Home Theater Integrated Network AV Receiver

Integra DTM-5.9 Stereo Receiver - Tested

Denon AVR-S650H 5.2 Channel 340W Receiver Home Surround Sound

Pioneer Elite VSX-LX103 7.2-Channel Network AV Receiver - Black

DENON 7.2CH AV HOME THEATER RECEIVER | AVR-S960H | BLACK | NO REMOTE

Integra DTM-5.9 2.1 Stereo Receiver - Tested Good

Yamaha RX-V675 Black 7.2 Channel Home Theater Natural Sound AV Receiver