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2048 Mercer Road, Lexington, KY 40511-1071 USA

800-322-8346 • 859-233-4599 • Fax: 859-233-4510

[email protected] • www.audioauthority.com

E-218  |  20210806

Troubleshooting

No HDMI-ARC Audio

•  Ensure that the HDMI 5V Output for the position is 

disabled

•  Ensure that the HDMI HPD is enabled for the position 

(toggle if necessary)

•  Ensure that the CEC is routed, and applicable ARC 

initiation commands are sent

•  Ensure that the ARC audio is routed to the position
•  Ensure that the BrightSign experience is sending 

compatible audio via the SPDIF interface.

•  Ensure that the HDMI-ARC device is turned on and 

connected to the appropriate port

No HDMI Audio/Video (non-ARC)

•  Ensure that the HDMI HPD is disabled for the position
•  Ensure that the HDMI 5V Output for the position is 

enabled

•  Ensure that the HDMI Video is routed to the position
•  Ensure that the BrightSign is routed to an EDID device 

(internal or external)

•  Ensure that the BrightSign experience is sending 

compatible audio via the HDMI interface.

•  Ensure that the HDMI sink device is turned on and 

connected to the appropriate port

No Ethernet Connectivity

•  Ensure connections are fully seated
•  Ensure the correct position is selected via software
•  Ensure audio is playing from source device
•  Ensure switched audio type is available and desired

No Audio

•  Ensure connections are fully seated
•  Ensure the correct position is selected via software
•  Ensure switched audio type is available and desired

No RS-232 Communication

•  Ensure connections are fully seated.
•  Ensure devices are using the correct protocol settings.
•  Ensure the Null/Straight selector is set correctly.

Mechanical Details

Case Type:  

Custom metal enclosure - full surround

Case Dimensions: 

W x L x H 

13.7 x 6.2 x 1.5 in (including mounting flanges) 

348 x 158 x 38 mm

Power Specification

Power Entry Port: 

2x barrel jack connectors  

(5.5 x 2.1mm, bussed)

Voltage: 

+12V DC

No-Load Current:  

MH10-HD: 

380 mA 

PCAs Only: 

70 mA

Maximum Load Current: 

MH10-HD: 

1150 mA

Maximum Current Output: 

RS-485 Bus: 

1.5 A @ +12.0V DC

 

USB A: 

500mA @ +5.0V DC

Related Documentation

Below is a list of additional references;  

click the links below for easy access:

  MH10-HD Product Details
  HS123: BrightSign Built-in SoC Series 3
  HS124/HS144: BrightSign Built-In SoC Series 4
  Supported Video Formats and Codecs
  Supported Audio Formats and Codecs
  Additional References

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