[mythtv-users] HDPVR intermittent failure

Jim lists at morton.hrcoxmail.com
Thu Jul 2 12:07:36 UTC 2020

On 7/1/2020 9:23 PM, DryHeat122 . wrote:
> On Sun, Jun 28, 2020 at 9:32 AM Greg <gregl at nycap.rr.com 
> <mailto:gregl at nycap.rr.com>> wrote:
>     On 6/27/20 9:46 PM, DryHeat122 . wrote:
>>     On Mon, May 11, 2020 at 12:59 PM DryHeat122 .
>>     <dryheat122 at gmail.com <mailto:dryheat122 at gmail.com>> wrote:
>>         On Mon, May 11, 2020 at 2:41 AM Stephen Worthington
>>         <stephen_agent at jsw.gen.nz <mailto:stephen_agent at jsw.gen.nz>>
>>         wrote:
>>             On Sun, 10 May 2020 20:20:30 -0700, you wrote:
>>             >On Sun, May 10, 2020, 7:58 PM Greg <gregl at nycap.rr.com
>>             <mailto:gregl at nycap.rr.com>> wrote:
>>             >Ok thanks I will investigate that.  But it's been
>>             working fine with the
>>             >current power source for like a year now, and others on
>>             this list use it
>>             >too.
>>             <snip><https://forum.mythtv.org>
>>         Thanks for all the suggestions.  I will investigate all of
>>         them.  Something I do not see in here is an opinion that some
>>         software problem could have evolved.  I was kind of thinking
>>         of that as a possibility given that it worked fine for so
>>         long then seems to be degrading.  OTOH I never thought of the
>>         possibility that the USB connection could be degrading.  I'm
>>         going to try Greg's connector, assuming I can get parts
>>         during the Apocalypse.  Also, his link specifies Radio Shack
>>         parts.  What's Radio Shack?!? ;-)
>>     Well folks this is getting frustrating.  I addressed a possible
>>     ventilation issue.  I also unplugged the power cord I had from
>>     the Myth box USB and connected it to an old iPad charger rated at
>>     5V/2A.  No help.  It wouldn't record anything, no matter how much
>>     rebooting and power-cycling. So I concluded the HDPVR was hosed
>>     and got a new one (more accurately, a replacement circuit board
>>     for it).  Powered it with the same wall wart. Recorded great for
>>     a day.  Just turned it on and I have failed recordings and it
>>     won't respond when I try to manually play a channel.  Reboot, and
>>     it works fine, same pattern as before.
>>     I finally got a molex connector and am still going to try what
>>     Greg suggested, but I really don't think it's a power issue. 
>>     Apply makes good electronics and that wart has the same specs as
>>     the power supply that comes with the HDPVR.  The HDPCR isn't
>>     overheating.  It's not the HDPVR itself.  That only leaves the
>>     software on the myth box.  Anyone have ideas how to troubleshoot
>>     that?
>      The next time it won't record,try to cat it and see if it
>     responds.  This is the command I use,  cat /dev/video0 > test ..
>     dmesg for the proper port it's connected to. This may help too see
>     if it is the software or not..
>     I am curious were you got the motherboard? There used to be a
>     place in Ohio (I believe) ,but they have gone out of business.
> It failed again (despite putting the conf file in place).  Here's the 
> result:
> steve at steve-EP45-UD3P:~$ cat /dev/video0 > test.ts
> cat: /dev/video0: Input/output error
> I don't know how to "dmesg for the proper port it's connected to."  I 
> think it's just connected to a USB port, but I don't know how to find 
> out which one. Can you be more specific?
This works on my system

dmesg | grep pvr
[    6.231302] hdpvr 2-2:1.0: firmware version 0x15 dated Jun 17 2010 
[    6.452748] hdpvr 2-2:1.0: device now attached to video0
[    6.452844] usbcore: registered new interface driver hdpvr


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