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EPG goes blank

G

gjf60

Member
Hi I have HDR T2 1.03.12 CF 3.14 I've been searching for an answer to this but so far without results. In the last 2 weeks occasionally the EPG goes blank with no program information then comes back after a short while also but not sure if this is connected fails to record a pre-set programme or stops recording part way through. I have tried doing a system flush and running fix-flash-packages and adjusting settings. Any suggestions appreciated
 
Are you tuned to ITV1, Ch 4, Ch 5 or any channel on the PSB2 MUX? If so, the EPG and Now/Next data on this MUX has been screwed up for about 2 weeks. Try tuning to BBC1 (HD or SD), leave it alone for 20 mins or so and you should find the EPG will populate fully.
 
Its the on -screen EPG I suppose I'm more concerned about failing to record a pre-set programme or stopping recording part way through. They started about the same time as the blank EPG in the last 2 weeks
 
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gjf60 said:
Its the on -screen EPG I suppose I'm more concerned about failing to record a pre-set programme or stopping recording part way through. They started about the same time as the blank EPG in the last 2 weeks
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Has anything else changed in that time? Have you got a foreign multiplex? What transmitter are you on and what does the WebIf's Mux. Info. page say the transmitter channels are?
And, as TimK2015 asked, what service is the box receiving when you observe this?
 
Black Hole said:
This seems to me to indicate that the EPG cache isn't retaining data. Anybody concur?
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Depends which cache you mean. The one in memory or the one on disk?
I believe the one on disk is only written during normal operation, and only read at startup to provide a populated EPG immediately (albeit potentially out of date depending how long the box has been off for).
The one in memory (and on disk) should then be continously updated by what's received over the air and displayed on screen on request.
 
The only thing that has changed in the last 2 weeks I can think of is that I upgraded the CF from 3.3 to 3.4 Most of the time the EPG is fully populated and in the evening when the box has been on for about 3 hours I check the recording schedule and notice the EPG is blank or a recoding has failed or shut off part way through. I will look at what service the box is receiving when it happens tonight. I'm on the Belmont transmitter
 
Sorry I meant 3.13 to 3.14 Yes I was talking about the EPG going blank not the schedule (yellow button).
Yesterday evening I kept checking the EPG and it was behaving itself. I tried selecting many different channels and it was fully populated and it recorded 2 pre-set programs without cutting out part way through
I'm just looking at the WebIf's Mux. Info. page. There is only Easy Yorks and Lincs service in my area from Belmont

 
gjf60 said:
Is there anything I should be looking at if the EPG on screen goes blank again ?
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Yes, what channel is the box receiving at the time. If it is something on PSB2 eg ITV1, C4, C5 among many others then we know what the problem is and it will continue to happen until the mux operator stops transmitting invalid EPG data. You can avoid the problem by tuning to a channel on PSB1 or PSB3 eg. BBC1 SD or BBC1 HD for at least 20 minutes every day. A wake timer or schedule entry can be used for this.
 
gjf60 said:
Hi I have HDR T2 1.03.12 CF 3.14 I've been searching for an answer to this but so far without results. In the last 2 weeks occasionally the EPG goes blank with no program information then comes back after a short while also but not sure if this is connected fails to record a pre-set programme or stops recording part way through. I have tried doing a system flush and running fix-flash-packages and adjusting settings. Any suggestions appreciated
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I'm wondering if this happens when you first switch it on. If so, I'd guess that it shows the EPG from its cache, then realises that that that's out of date and so it clears it and downloads the current EPG.

I read a tip many years ago on this forum. It was:

Set a reminder for 30 minutes for any old program which is on at 04:00 or there abouts for every day.

This makes it switch on at that time and while it's sitting there imagining that it's reminding you it downloads that day's EPG. This seems to work a treat; I always find a fresh and stable EPG.

It also means that if a required recording's schedule changes to more than 15 minutes earlier than it was originally the hummy switches on earlier than it would have done on the original schedule. (It normally switches on 15 minutes prior to the time that it expects a program to be transmitted so that it can watch for the program's identification code)
 
MikeGibbs said:
I'd guess that it shows the EPG from its cache, then realises that that that's out of date and so it clears it and downloads the current EPG.
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The first part is true, but the rest isn't. There is no download - it just arrives, constantly, and updates what's there. How it copes with invalid data arriving is rather unknown.
It also means that if a required recording's schedule changes to more than 15 minutes earlier than it was originally the hummy switches on earlier than it would have done on the original schedule.
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That of course depends on when the change to the schedule gets made. Quite often it is made quite late. Sometimes it's done retrospectively. The BBC are especially guilty of this around sporting events, particularly Wimbledon and Snooker.
 
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