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HMI unified comfort panel screen, black screen of death

2/8/2025 6:00 PM	Rate (0)
KBnickname49 Joined: 3/27/2024 Last visit: 7/3/2025 Posts: 1 Rating: (0)	We have an MTP700 Unified Comfort Panel on-site that experienced a power cut. Upon restarting, the panel briefly displayed the Siemens startup screen before transitioning to a black (but still illuminated) screen. It does not load the normal operating software of unified comfort panels. System Details: > HMI Model: MTP700 Unified Comfort Panel > Firmware Version: 18.0.0.3 > Article Number: 6AV2 128-3GB06-0AXx > PLC Model: CPU 1510SP F-1 PN > PLC Article Number: 6ES7 510-1SK03-0AB0 V3.0 > Software Used: TIA Portal Unified v18 This is the second time we have encountered this issue with a Unified Comfort Panel. The first instance resulted in a warranty return, and we are in contact with Parmley Graham regarding that case. Observations & Possible Causes: > The HMI is unreachable via TIA Portal but responds to pings. > We previously encountered JavaScript issues, where runtime would crash due to memory overflow and callback-related problems. Switching to asynchronous scripting resolved those crashes, and we have not observed an active runtime failure since. > Considering a factory reset via ProSave, but will need on-site access to retrieve the MAC address from the back of the panel, would this work? Could anyone advise on further troubleshooting steps or potential causes of this issue?
	Last edited by: KBnickname49 at: 02/08/2025 18:01:09
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2/11/2025 1:27 PM	Rate (0)
Stefan Arcularius Platinum Expert Joined: 1/21/2013 Last visit: 9/9/2025 Posts: 4099 Rating: (633)	Hi KBnickname49, What you describe, a black screen during the boot process before reaching the device control panel, looks like a corrupted operating system. If so, you would need to perform an OS update, which requires the panel to be in maintenance mode. You can try this with ProSave. If you run arp -a right after the ping command, you will find the device's MAC address in the output. However, ProSave may not be able to put the device into maintenance mode, and the "Maintenance" button is required. You may see an improvement after running a bootloader update. However, this cannot be done remotely. In general, I would recommend using the latest image version, even if it is higher than the TIA Portal version you are using. If the problem does not change after following these steps, you should contact Siemens for a deeper analysis of the problem. Kind regards Stefan

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