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Guest Message by DevFuse

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Intermittent pixelation on 722


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42 replies to this topic

#26 OFFLINE   P Smith

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Posted 16 March 2013 - 02:00 PM

we will know in a few days how good it is ;)

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#27 OFFLINE   dttruax

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Posted 19 March 2013 - 06:10 PM

we will know in a few days how good it is ;)


Well so far so good... for the most part. Eeeeeeevery once and awhile I'll notice a little "hiccup" with a split second of pixelation.... not sure what's up with that. And watching one of the local channels today the picture "froze" for a split second a couple times and then the "complete signal loss" screen came up for a split second and then everything was back to normal..... :confused::confused:

#28 OFFLINE   P Smith

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Posted 19 March 2013 - 06:43 PM

well, it's coming baaaaack ... ;)

#29 OFFLINE   wje

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Posted 19 March 2013 - 07:53 PM

I've had brief pixellation and sound dropouts for quite a while with my 722K. Support thought my dish needed reaiming. It had excellent sig on all 3 satellites, but hey, they wanted to do it, so ok. Made no difference at all. I finally noticed that the dropouts happen exactly on the half-hour. I'd be interested to see if others have this. The pixellation/dropout is probably a second or less.

My assumption is that this is a firmware problem. Some housekeeping is being done on the half-hour (guide change?) and either the priority is too high or the CPU just isn't adequate for the burst load. Never saw this with my lamented and sorely missed 622.

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#30 OFFLINE   dttruax

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Posted 13 July 2013 - 09:30 AM

Well after 4 months of the new receiver, I think it's coming back. Of course we've had a lot of storms lately but it seems to do it when I think it shouldn't. Also might be the wireless adapter; it keeps connecting and disconnecting to my router and while trying to deal with all that the screen would pause and/or pixelate. I just unplugged the adapter; I don't use it for anything. 

 

There might be another "new" receiver in my future :rolleyes:



#31 OFFLINE   dttruax

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Posted 13 July 2013 - 09:43 AM

Forgot to add that the receiver is now on top of the shelf with coasters @ all 4 corners and a USB external fan sucking air out the left (as you face the receiver) side. Avg. temp of 114 (high of 122 low of 109) can't seem to get it any lower than that. 



#32 OFFLINE   P Smith

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Posted 13 July 2013 - 11:48 AM

you're incorrectly using the fan, it's "fighting" against internal fan and making worst for internal temp by pulling hot air from tuner's can area to CPU and HDD

 

if you want do that properly, make pushing ambient air into DVR from left side (facing front of the box) and/or suck hot air from DVR at right side



#33 OFFLINE   dttruax

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Posted 13 July 2013 - 12:50 PM

you're incorrectly using the fan, it's "fighting" against internal fan and making worst for internal temp by pulling hot air from tuner's can area to CPU and HDD

 

if you want do that properly, make pushing ambient air into DVR from left side (facing front of the box) and/or suck hot air from DVR at right side

I always thought you suck the air out from the left side of the receiver (if you're facing the front of the receiver) and/or blow in from the right side. I think that's how I read/saw everyone on here was doing it. 



#34 OFFLINE   dttruax

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Posted 13 July 2013 - 12:55 PM

you're incorrectly using the fan, it's "fighting" against internal fan and making worst for internal temp by pulling hot air from tuner's can area to CPU and HDD

 

if you want do that properly, make pushing ambient air into DVR from left side (facing front of the box) and/or suck hot air from DVR at right side

I"ll give that a try. I thought I was doing it correctly based on what I read here. Anyone have a diagram/pic of how it's supposed to be?



#35 OFFLINE   P Smith

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Posted 13 July 2013 - 01:56 PM

I know how it works, I did airflow analysis, I did my own design as a better solution, I did implement it and my 622 works for a couple years much better before replaced by 922 then by a H ...

I did post pictures of the mod and analysis here a couple years ago



#36 OFFLINE   dttruax

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Posted 13 July 2013 - 02:08 PM

I know how it works, I did airflow analysis, I did my own design as a better solution, I did implement it and my 622 works for a couple years much better before replaced by 922 then by a H ...

I did post pictures of the mod and analysis here a couple years ago

I'm sure you do know how it works. I just seem to remember that the consensus on there was suck out the left side and/or blow into right side (if you're facing the front of the receiver). I don't have time to search all the posts and threads on this; I just thought that's what the consensus was. 

 

So this contraption is also operating incorrectly? http://www.ebay.com/...=item53e51d0691



#37 OFFLINE   P Smith

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Posted 13 July 2013 - 02:41 PM

what consensus should be of these who never opened a hood, but telling you how to an engine working ? funny ...



#38 OFFLINE   dttruax

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Posted 15 July 2013 - 02:56 PM

Well turning the fan around to blow air IN from the left side for a couple days actually made the temps go UP (High 127, Avg 114). I think I'll put it back the way I've had it since March. 

 

But I don't think that was the cause of the pixelation. It appears that a couple of the branches/leaves of the bushes I have hiding the dish from the road were growing up in front of the dish/LNB. A quick trim and it hasn't done it since. SMH.



#39 OFFLINE   P Smith

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Posted 15 July 2013 - 03:17 PM

the temp sensor [LM75] is locating behind HDD if you looking from left side, so, I have an explanation...

 but the idea is slapping a fan outside without knowledge of airflow ... kind of kicking tires when an engine is troubling

it's your DVR after all; feeling like en expert ? go ahead, make anything what you think is good for you ...


Edited by P Smith, 15 July 2013 - 03:19 PM.


#40 OFFLINE   dttruax

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Posted 15 July 2013 - 03:36 PM

the temp sensor [LM75] is locating behind HDD if you looking from left side, so, I have an explanation...

 but the idea is slapping a fan outside without knowledge of airflow ... kind of kicking tires when an engine is troubling

it's your DVR after all; feeling like en expert ? go ahead, make anything what you think is good for you ...

Thanks for the help :rolleyes:



#41 OFFLINE   Jim5506

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Posted 15 July 2013 - 07:02 PM

You had the fan positioned properly.

 

The power supply (major source of heat) is on the left side near the vents.

 

Pulling air out of the left side will help cool your receiver.

 

The internal fan is WAY on the other side of the unit and only operates at boot up unless temps get near meltdown (almost useless) and it only blows on the hard drive ignoring all the other heat generating electronics in the receiver - IMHO a crappy design.

 

I ran my 622 and 722k for 7 years with a fan pulling air out of the left side and it lowered the internal temp as indicated by the HDD temp in the reports by 10 degrees.

 

I still have the same fan now pulling air out of the right side of my Hopper2000 because Dish reversed the layout of the components.  Most of the heat is generated on the right side of the Hopper and on the left side of the 722k.


Edited by Jim5506, 15 July 2013 - 07:04 PM.

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#42 OFFLINE   P Smith

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Posted 15 July 2013 - 07:41 PM

Duh ! Damn, I'm lost ... thinking all the time of H (so, I'm really discussed with myself) :(



#43 OFFLINE   tymekeeper

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Posted 20 September 2013 - 12:49 PM

You had the fan positioned properly.

 

The power supply (major source of heat) is on the left side near the vents.

 

Pulling air out of the left side will help cool your receiver.

 

The internal fan is WAY on the other side of the unit and only operates at boot up unless temps get near meltdown (almost useless) and it only blows on the hard drive ignoring all the other heat generating electronics in the receiver - IMHO a crappy design.

 

I ran my 622 and 722k for 7 years with a fan pulling air out of the left side and it lowered the internal temp as indicated by the HDD temp in the reports by 10 degrees.

 

I still have the same fan now pulling air out of the right side of my Hopper2000 because Dish reversed the layout of the components.  Most of the heat is generated on the right side of the Hopper and on the left side of the 722k.

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