T4 reboots after a few minutes

[sddawson]

I have a T4 that has started to spontaneously reboot. I can leave it untouched playing live TV, and after 3 or 5 minutes it will just reboot. Are there any logs I can look at? Hardware/HDD fault?

[Grumpy_Geoff]

Rebooting or restarting the GUI?

There won't be anything that persists over a reboot, unless you've enabled debug logging

To enable debug logging, see this post.
If you're on the 19.3-series beta firmware (20190630 or a subsequent release) then you can also enable debug logging in the 'System' setup section.

I think though that if it's a hardware fault then there won't be anything in the debug log.

Do you know how to access the command line?
If so, we could create a script to capture the messages log file every 10 seconds and keep copies for the last few mins or so, to ensure it persists.

[Grumpy_Geoff]

Are there any crash logs present (default log location is /home/root/logs)?

What are the termination codes listed (if any) for those relevant restart times in file /home/root/logs/enigma2_execution.log?
You can use File Commander (MENU>>Sources / Files) to view it and/or copy it.

If there's no 'enigma2 terminated with code {n}' entries listed for the relevant times, then I think that means the GUI/enigma2 didn't exit and the T4 rebooted.

[sddawson]

Thanks for taking the time to give me those tips, and apologies for taking so long to reply - I've been away from the T4.

I had the T4 powered completely off overnight, and have just cranked it back up. I immediately cleaned up the hard drive. There were lots of instances of the same recording, because a recording was being attempted every time the box rebooted. I also cleaned up a lot of old recordings. So far it hasn't rebooted. I'm certain it was doing a full reboot, judging by the front panel, Also, according to /home/root/logs, enigma was only starting during the period of the reboots. I do run the series2folder plugin, and I'm not sure if that was causing any problem.

I am noticing a degree of pixelation. Signal strength and quality can both be 100%, then I can get some pixellation and they drop to 0% momentarily. Don't know what's going on there either!

[peteru]

The tuner voltage regulators are failing and the motherboard near them may be damaged. Get your unit repaired.

[sddawson]

Oh dear, another Beyonwiz box bites the dust then! I’ve lost count of the number of units I’ve had repaired over the years. I love the functionality of these boxes, but the reliability really doesn’t seem good! Thanks for the suggestion.

[Grumpy_Geoff]

Oh dear, another Beyonwiz box bites the dust then! I’ve lost count of the number of units I’ve had repaired over the years.

Take a look at the tuner regulators.
Turn off the power to the T4 at the wall. Wait 30 mins, then take off the cover and have a gander at the regulators.
Any brown/black ooze, see prl's mess in the post here.
My mess is shown in these pics -
https://ibb.co/GVd0q45
https://ibb.co/gDBmcGc
https://ibb.co/NmwHsrz