I'm about 99% sure you have hit the nail on the proverbial head.
The tuner does NOT currently have the right power source. I would note, as a VERY weak form of defense that the tuner itself says it requires a 12V 1amp power supply. Best excuse I can come up with on short notice! :D

I just ordered ...

Model: HDFX-4K
Device ID: 10ABA6B5
Firmware: 20260326

Above cut and pasted from the device.

NOT 10ABA65B - blasted dyslexia :shock:

My bad. Sorry!

Thanks for the reply. I'm almost certain the device is faulty. It just keeps doing almost exactly the same sequence of events. Starts out just ...

Here's a report from this morning
Here are the steps you requested, and my progress.
We would like to get some diagnostic data:

Please go to http://hdhomerun.local
If it tells you that a firmware update is available, please install it
Click System Status (Menu)
Check the Send diagnostic ...

Well, it flaked out again . Worked for about an hour, then started acting weird. Then it finally quit and started all the weird errors again. I've done some checking online, and I am guessing it's all related to heat. I think I will try a few things I have read about. Put it on its side, provide a ...

I'm afraid it's a goner. MAKE THAT WAS AFRAID!
Last night, it started by not receiving VHF channels. IT worked on UHF for a while. Now in HDHomeRun or HDCONFIG it can't find a single channel. I tried your suggestions, but I can'tbegin to complete them.
I certainly appreciate your offer, but it's ...

I have an HDFX-4K that has suddenly starting acting up.
HDHR config bombs out and says "ERROR:communication error"
I made sure everything was up to date, but it is still not right.
I am not smart enough to include a picture, but here's what I do know......
Hardware Model HDFX-4K
Firmware VErsion ...

I told you to wait for informed opinions.
But the website was very interesting.

I am NOT an expert here by any means, so I would wait for an informed answer from somebody who actually knows what they are talking about. :D
I SUSPECT the channels you can not watch are DRM "protected" channels, which are a giant pain in the butt for Silicon Dust products. DRM "protection ...

Keep up the good fight Nick. I have a 4K tuner of yours that is getting ready to go to work on ALL ATSC 3.0 stations.

Tell us all about the 8 tuner ATSC 3.0 card

It seems to me that SiliconDust, through their filing, has proven beyond any doubt that ATSC 3.0 proponents have made absolutely absurd and disingenuous (to be kind) arguments in order to justify DRM.

In my eyes, Nick offered some very encouraging news regarding DRM I obtained while watching a Lon Seidman's youtube post.

quote:
https://postimg.cc/vx4YYjGh

Seidman video:
https://youtu.be/IzLjhBF30XQ

Mods: If I've posted something you don't like, feel free to delete it. I don't want to rock the ...

I think this is HUGE. I would love for some SiliconDust folks to respond to what happened yesterday,

https://www.newscaststudio.com/2025/10/28/fcc-votes-to-accelerate-nextgen-tv-transition-with-flexible-framework/

from the meeting............

“support and accelerate the nation’s ongoing voluntary ...

I personally think AntennaManPA did a much better job. Lon might have given the impression that any old TV would easily work with an ATSC 3.0 signal.
But I personally thank both of them for their tireless efforts. I hope the FCC folks actually paid some attention. Will be interesting to see ...

Lon Seidman and Antenna Man met with the FCC...

Lon:
https://www.youtube.com/watch?v=pNuZ0_jq1-A

Antenna Man:
https://www.youtube.com/watch?v=1jIyLPsVfv4


I personally think AntennaManPA did a much better job. Lon might have given the impression that any old TV would easily work with an ATSC 3 ...