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Black screen- firmware bug or HDMI fault? |
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#1 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Black screen- firmware bug or HDMI fault?
Hi. I posted on this issue a while back without much response. However, I have found something out since.
Basically, sometimes I used to turn the Humax on from standby and I would have the channel number appear on the front display as normal, but would have a black screen with no audio on the tv. I could change channel (and would see that change on the Humax screen) but would see and hear nothing on my tv. If I turned the Humax off and on again at the plug, I got the picture and audio back. Now then, this is what I have found out since- Basically when this has happened lately, I have found that instead of turning off and on at the plug, if I simply remove the HDMI lead from the back of the Humax, then reconnect it straight away, the picture and audio appears! It gets better!! Last night, the picture and audio came on fine after coming out of standby. But then I turned over to BBC HD and had a black screen with no audio. Thinking there was a problem with that channel, I thought nothing much of it and turned over to a standard channel. Later, I turned back over to BBC HD and had nothing still. Just in case, I tried removing and reconnecting the HDMI lead, and lo and behold the BBC HD channel picture and audio appear!! Firstly, can anyone else confirm if they have had the same issue? Secondly, can anyone please tell me what's going on? Does this sound like a HDMI or firmware issue? I will try swapping the HDMI lead for the one in my Bluray player, but this issue doesn't happen all the time, so I might not know straight away if it's the lead that's causing it. Thanks. |
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#2 |
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Forum Member
Join Date: Sep 2001
Location: belgium
Posts: 292
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It sounds like plugging your HDMI in is simply alerting the TV to the fact that it is there. What TV do you have?
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#3 |
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Forum Member
Join Date: Jun 2001
Location: Southwick Brighton West Sussex
Posts: 1,246
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I used to get a much the same problem with my old HDMI media box does changing from the AV channel (hdmi one) to AV2 or a TV channel and then back to your AV channel not fix it did for me?
Also turning the TV on and to AV (HDMI channel) before turning the Freesat box from standby could help as the box talks to the TV thought the HDMI |
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#4 |
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Join Date: May 2003
Posts: 59
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Quote:
Firstly, can anyone else confirm if they have had the same issue?
I usually fix it by switching to a different AV channel & then back to the HDR AV. |
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#5 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
It sounds like plugging your HDMI in is simply alerting the TV to the fact that it is there. What TV do you have?
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#6 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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I will try changing to another input and then back again next time it happens. However, I fail to understand why it would only happen with the BBC HD channel and no others last night.
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#7 |
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Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
It's not happened often enough yet for me to be able to nail it down but I think it happens only when the box is switched on from standby when it's recording.
However, my wife has reported having this issue in the mornings after I have gone to work when no recordings are taking place. |
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#8 |
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Forum Member
Join Date: Dec 2008
Posts: 2,494
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I have a Pioneer 428XD Kuro.
The Humax is on INPUT 3. I get a black screen whilst the box boots but its fine once its booted. Are you sure you've giving it enough time? Also, occassionally I will get a flash of a green screen once booting has completed but it lasts only a second and then goes straight to the box menu (I believe that is the HDMI) so maybe sometimes the HDMI is slow to intialise as well. |
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#9 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
I have a Pioneer 428XD Kuro.
The Humax is on INPUT 3. I get a black screen whilst the box boots but its fine once its booted. Are you sure you've giving it enough time? Also, occassionally I will get a flash of a green screen once booting has completed but it lasts only a second and then goes straight to the box menu (I believe that is the HDMI) so maybe sometimes the HDMI is slow to intialise as well. The Humax is on Input 1 on mine and yes, I am absolutely positive I am giving it enough time to boot. I am fully aware the Humax takes around 30 seconds to boot from standby, and the majority of the time it does so perfectly. It's just every so often this happens (I have looked at the black screen for over 2 minutes in the past just in case), and like I said before, it happened with BBC HD only the other night but the rest of the channels were fine. I have swapped HDMI cables with the one from my Bluray just in case, and haven't had the issue since the BBC HD one. But that's just the thing- it doesn't happen very frequently. Perhaps once or twice per week. I have also changed the delay with my universal remote so that the tv is switched on to the correct input BEFORE the Humax is turned on. Perhaps that will help. So there is no definite answer yet as to what is causing this? If it's that the tv needs to be on the input channel first before the Humax is turned on, is that the Humax's fault or the tv's? |
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#10 |
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Forum Member
Join Date: May 2005
Location: Redditch Worcs
Posts: 17,289
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Quote:
Ahh. I remember what my model is now- it's not the 428XD I have. I have the 4280XD- the cheaper model without sub-woofer output etc.
The Humax is on Input 1 on mine and yes, I am absolutely positive I am giving it enough time to boot. I am fully aware the Humax takes around 30 seconds to boot from standby, and the majority of the time it does so perfectly. It's just every so often this happens (I have looked at the black screen for over 2 minutes in the past just in case), and like I said before, it happened with BBC HD only the other night but the rest of the channels were fine. I have swapped HDMI cables with the one from my Bluray just in case, and haven't had the issue since the BBC HD one. But that's just the thing- it doesn't happen very frequently. Perhaps once or twice per week. I have also changed the delay with my universal remote so that the tv is switched on to the correct input BEFORE the Humax is turned on. Perhaps that will help. So there is no definite answer yet as to what is causing this? If it's that the tv needs to be on the input channel first before the Humax is turned on, is that the Humax's fault or the tv's? |
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#11 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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I just tried turning it on and had the issue again, so I know it is definitely nothing to do with the original HDMI cable. It is recording (Overboard on ITV), so I don't know if that has anything to do with it (JCUK mentions it happening when recording on his).
Unfortunately, changing input channel to another and then back again did not fix the problem. I had to remove the HDMI cable from the back and reconnect it as before. This is getting annoying. |
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#12 |
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Forum Member
Join Date: Mar 2004
Location: Marlow, Bucks
Posts: 117
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Have you tried disabling the "HDCP Default" setting in the TV Setup menu?
If it is an HDCP handshake problem then it should only happen on BBC HD if the setting is disabled. James |
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#13 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
Have you tried disabling the "HDCP Default" setting in the TV Setup menu?
If it is an HDCP handshake problem then it should only happen on BBC HD if the setting is disabled. James I can't find anything to do with HDCP Default settings. I have found my tv's user manual online here (2nd one on the list) if anyone can help me out with finding any settings I need to change. Thanks to everyones help so far. |
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#14 |
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Forum Member
Join Date: May 2005
Location: Redditch Worcs
Posts: 17,289
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Quote:
I'm sorry- I don't know where to find this setting. On my tv, I have 'HDMI Input' options, where I can enable or disable HDMI input for Input 1 for example (if it's disabled it uses the Input 1 SCART port instead). I also have a 'HDMI Control Setting' in my tv options, where it has 'power off control', where it establishes if the device should be turned off when the display is, and 'power-on ready' which establishes if the display should be turned on based on the operations of the device.
I can't find anything to do with HDCP Default settings. I have found my tv's user manual online here (2nd one on the list) if anyone can help me out with finding any settings I need to change. Thanks to everyones help so far. |
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#15 |
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Forum Member
Join Date: Mar 2004
Location: Marlow, Bucks
Posts: 117
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Quote:
I'm sorry- I don't know where to find this setting.
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#16 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
It's in the "TV Setup" menu of the PVR. With the "HDCP Default" setting enabled (which I think is the default), the PVR requires an HDCP handshake with the display even for non-copy protection flagged programmes. I think this includes SD channels viewed over HDMI, but I'm not sure. The setting is sort of described on page 39 of the manual.
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#17 |
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Forum Member
Join Date: May 2008
Posts: 53
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I have a similar problem. My TV is a Philips that requires a HDMI to DVI converter.
Everytime I boot out of standby with the TV switched on I get a black screen - although I can hear the sound (which is not sourced from the HDMI). If I turn the TV off and back on again (not just in and out of standby), the picture appears and all is well. This happens on all channels both SD and HD. Changing channels on the TV does not make any difference. The only thing that works is to turn the TV off and then back on again. My work around is to wait until the channel number is shown on the Foxsat and then turn the TV on. This problem has only happened since the last Foxsat update (I have the HD not the HDR) - although I cannot be sure whether it was a problem immediately after the update or whether it started shortly afterwards. |
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#18 |
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Forum Member
Join Date: Feb 2003
Location: Derbyshire
Posts: 19
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Have the same problem.Originaly thought it was only when recording HD but now find it can be when recoding any CH. I wondrer if Humax Know obout the problem. By the way my tv is a panasonic so it can't be TV make related
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#19 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
I wondrer if Humax Know obout the problem. By the way my tv is a panasonic so it can't be TV make related
I have emailed Humax about it. Perhaps you may want to as well. freesat@humax-digital.co.uk |
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#20 |
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Forum Member
Join Date: Feb 2003
Location: Derbyshire
Posts: 19
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wastedythe, Have just send them an email explaining the problem & asked them if its a faulty box should I be returning it to the dealer.
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#21 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Just to let everyone know, since disabling HDCP (a week ago), the problem hasn't occured- not even once! Perhaps the problem is solved!
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#22 |
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Forum Member
Join Date: Jan 2009
Posts: 54
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I have noticed this as well.
What I have noticed it seems to happen sometimes when the device is doing a recording and I switch on my TV (SHARP AQUOS 37" LCD) then switch on the HDR. Only way I have resolved was to power reset the HDR. Yesterday I spotted the issue again. put device back into STANDBY and later on when I noticed the recording had finished brought it back out of standby. Noticed that at this point display states "Boot" whereas when coming out of standby when it is recording doesn't. Well this time picture worked fine. So I wonder if this is a issue with the HDMI handshaking not being active when device is recoding with the TV switched off. Does this scenerio seem to be what others are getting. |
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#23 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
Does this scenerio seem to be what others are getting.
But last night I was on my Bluray and turned the tv over and the Humax on as it was recording, and black screen again! So it seems not too many people had the issue from a cold boot like I once had. But there are plenty of people reporting it happening when it's in the middle of recording. |
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#24 |
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Forum Member
Join Date: Mar 2008
Location: Robin Hood Country
Posts: 45
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Is there a workaround for this apart from removing the HDMI cable from the HDR as I can't get to mine that easily, and to make it worse it only happens when my wife using it. Switching on and off at the rear of the HDR is not an option as you will lose the recording that's taking place. I only get the black screen when the HDR is in standby and its recording. My TV is a Panny plasma.
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#25 |
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Forum Member
Join Date: May 2006
Location: Birmingham
Posts: 237
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Quote:
Is there a workaround for this apart from removing the HDMI cable from the HDR as I can't get to mine that easily, and to make it worse it only happens when my wife using it. Switching on and off at the rear of the HDR is not an option as you will lose the recording that's taking place. I only get the black screen when the HDR is in standby and its recording. My TV is a Panny plasma.
While I am posting, I would just like to say that since disabling HDCP in the Humax settings, I no longer get the black screen UNLESS I am recording something at the time- that is the only instance when it occurs now. |
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