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Old 02-08-2020, 01:27 PM
timg11's Avatar
timg11 timg11 is offline
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Join Date: Sep 2008
Posts: 407
HD-300 - unusual failure symptoms

A couple days ago, my HD-300 stopped working.
Normal steps of restarting the HD-300 and the server didn't help.
The HD-300 would boot to the internal menu, and show my server name in the list, but blanked the video output and become unresponsive when it tried to connect.

I got out my backup HD-300 and hooked it up. Same result exactly. I replaced the HDMI cable thinking a failure there might cause the the video loss at the mode switch into 1080p. No help.

I looked in the HD-300 system information page, and noticed the IP address was
Yet the Sage server was listed as available in the HD-300 menu. Interesting - the server name must be sent with a broadcast packet, and is received even without an IP. Other devices on the network were all fine. Link lights on HD-300 and switch good. Tried other ports on the switch. Swapped the Ethernet cable. Rebooted the DHCP server just in case. Changed the HD-300 to static IP. No effect.

Running out of options, I started thinking of what I hadn't replaced. The HD-300 power supply. It's deeply embedded in the mess of wiring and hard to access so it wasn't my first reaction to change it. I swapped out the 12V 2A wall wart, and everything worked again. Wow!

I've never seen a power supply failure that would exhibit itself by only affecting the networking, but there it is.

I hope this helps someone else.
HD300 extender with SageTV V9.1.10 (service mode), Running on Windows 7 (32 bit), E8400 3GHz dual core CPU, 4G RAM, Gigabyte GA-P35-DS3L motherboard. NVidia 8600GT; Viewsonic LCD on one output and Mitsubishi WD57734 HDTV via DVI/HDMI on other output. HDHomeRun tuner, HD-PVR Rev E1. HD-PVR 2 connected to Google Fiber GFHD200.
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