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davidmorr

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Reply with quote  #1 

After far too long, I pulled everything out of my TV cabinet and cleaned the dust off. (And incidentally realised some of the audio equipment I had not used since the last cleaning a long time ago. Reluctant to get rid of it because it is good quality, but mostly I do stuff on my computer now so... It is now in a sealed box where I can get it if I want. Will be a pain to set up again, but less work probably than constantly cleaning the dust off.)

I put the remaining stuff back Toppy 2400, Beyonwiz U4, Apple TV, all connected to the TV (Samsung SmartTV) with HDMI. I had left the HDMI cables plugged into the TV and just unplugged the other ends while I moved things.

Ok, it is all back together now, and everything seems to work except the Toppy. The TV screen is black. The Toppy seems to work judging by the display on the front of the unit - it changes according to which keys I press on the remote.

So I swapped the cables for the 2400 and the U4 on the back of the TV. The Toppy then worked, the U4 did not. Since it was different cables, the cable must be ok.

So it looks like the HDMI1 port is stuffed.

I cannot figure why this would happen. TV was powered off, unplugged then plugged in and turned on. Everything else works. Why would HDMI1 dies like this?

Contemplating doing a reset on the TV, but not looking forward to reconfiguring it all. There seems to be no way to backup the settings. :-(

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IanL-S

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Reply with quote  #2 
I suspect it is a handshake issue. I have had problems similar to this with Toppys attached to HDMI port via a HDMI switch.

Also I have had similar issues with my now long departed Sharp TV. The solution in that case was to do a reset to factory settings - the HDMI settings got stuffed.

I assume that you have checked the settings on the TV for the particular HDMI port. Most recent premium TVs have individual settings for each port. It could be that the particular port has lost the plot and needs to be reset. I have had this happen with my LG OLED TV.

Ian
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DeltaMikeCharlie

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Reply with quote  #3 
I also have encountered a HDMI handshaking issue.

If the PVR is powered-on after the TV, I need to power-cycle the TV to get PVR sound back.  If the PVR is on before the TV, it works fine.

My old-but-now-defunct 2460 did not have this problem, but my newer 2400 does have the problem.  I suspect that it is an issue with the motherboard from when Topfield swapped from Korea to Indonesia for their manufacturing.
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AQUAR

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Reply with quote  #4 
Just a few suggestions:

Is the PVR output resolution set to the native resolution of the TV?
If the output resolution has to auto switch, the HDCP system can kick in at the point of first connecting the 2 devices.

HDMI cables that aren't rated for the output resolution used can also disturb this HDCP system (had this issue with my home cast).

HDMI physical connections can also cause issues as the contacts burnish over time - try removing and re-inserting a few times to clean up the contacts.

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davidmorr

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Reply with quote  #5 
Quote:
Originally Posted by AQUAR
Just a few suggestions:

Is the PVR output resolution set to the native resolution of the TV?
If the output resolution has to auto switch, the HDCP system can kick in at the point of first connecting the 2 devices.

HDMI cables that aren't rated for the output resolution used can also disturb this HDCP system (had this issue with my home cast).

This had all been working perfectly for at least two years with the same cables in the same ports. It was set to manual 1080i.

Quote:
HDMI physical connections can also cause issues as the contacts burnish over time - try removing and re-inserting a few times to clean up the contacts.
That has happened a few times after I discovered this problem.
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davidmorr

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Reply with quote  #6 
Now that's a worry. I reset the TV and started the setup. While it was scanning for channels, it was playing music and had an animation going on in the background. Several times, the music and the animation paused for a second then resumed. Wondering if there is something more serious wrong?
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AQUAR

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Reply with quote  #7 
@ davidmorr

The interaction between HDMI ports and devices isn't always consistent between connection choices.
It happens also on USB ports where some marginality fails the connection on one port but not another.
Trouble shooting is a process of elimination but of course you may well find you do have a stuffed HDMI port.
IMHO you cannot conclude that just yet, even though it was working before the dusting exercise and the device swap shows its no longer working.

If it was me I would next set the Toppy to a lower resolution 720P and try again.
I would also change the boot order.

Dry solder joints on the HDMI connections is also a possibility (pulling the cable out might have been the straw that broke the camels back!).
Put some upward / downward pressure on the plug and see if it springs back to life.

Failing these easy checks you are left with Ian's suggestions to cycle the HDMI settings in the TV, and if that doesn't work its probably stuffed.




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davidmorr

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Reply with quote  #8 
I ended up resetting the TV and after a bit of fiddling, it came back. Did not think to save all the previous settings so it is pretty much at the default settings now. I guess being a computer now, smart TVs will suffer all the strange behaviour of computers.

Thanks for your help
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IanL-S

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Reply with quote  #9 
Good to hear that you managed to fix it. The first time I had the problem I was more than a little diconcerted.

Ian
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keith_leitch

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Reply with quote  #10 
Quote:
Originally Posted by davidmorr
I guess being a computer now, smart TVs will suffer all the strange behaviour of computers.


Oh, yes... I have an Android TV that needs rebooting nearly weekly, and regular firmware reinstallations. I was going to suggest the firmware on your Toppy, as I once recovered output through HDMI by refreshing that. Not necessary here, though.
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