HR24 receiver freezes every once in a while

Do you have other HD DVRs? Do they also have this problem?

Could be a signal-related issue. Could be a hard drive problem.  

There is a way to run a diagnostics test. If you hold down the info button for 3 seconds and then select info & Test and then run system test. If any of the results show 14,15,21 it means its the hard drive. However it could potentially be something with the tuner. Here are some steps I would do:

1.) Run diag test if it states sat dish alignment problem or distribution there could be something wrong with cabling or tuner

2.) Disconnect / reconnect the SAT IN

3.) Reset the reciever by unplugging for 15-30 seconds and then plugging back in 

If nothing works above call Directv and you may need a service call to address the issue.

Hope this helps if you need anything let me know!

Please post back with your signal readings for each satellite's transponders (and both tuners if applicable).  You'll find these readings under "Menu" -> "Setup" -> "System Setup" -> Satellite -> "View Signal Strength".  Note the "+" and "-" symbols next to the "Satellite" and "Tuner" entries where you can toggle the readings between the various satellites and both DVR tuners. 

Fill in your readings for each satellite and tuner using these examples.  A properly aligned dish will show 80-90s on most of the relevant transponders (although some will be low or zero):

Satellite transponders (32 total at 101º)

[Most of your standard definition channels are beamed from 101ºW]

1-8    #   #   #   #   #   #   #   #

9-16   #   #   #   #   #   #   #   #

17-24  #   #   #   #   #   #   #   #

25-32  #   #   #   #   #   #   #   #

Satellite transponders (3 total at 110º)

[Not present with Slimline3 dish. No channels are currently beamed from this satellite]

1-8    NA  NA  NA  NA  NA  NA  NA  #

9-16   NA  #   NA  #   NA  NA  NA  NA

Satellite transponders (11 total at 119º)

[Not present with Slimline 3 dish. Local SD channels for some cities, Spanish package]

17-24  NA  NA  NA  NA  NA  #   #   #

25-32  #   #   #   #   #   #   #   #

Satellite transponders (16 total at 99º(s)) [or 99º(b)]

[Local HD channels for some cities]

1-8    #   #   #   #   #   #   NA  NA

9-16   NA  NA  NA  NA  NA  NA  #   #

17-24  #   #   #   #   #   #   #   #

[Note: these can be very slow to appear]

Satellite transponders (14 total at 99º(c)) [or 99º(a)]

[National HD channels]

1-8    #   #   #   #   #   #   #   #

9-16   #   #   #   #   #   #   NA  NA

[Note, these can be very slow to appear]

Satellite transponders (16 total at 103º(s)) [or 103º(a)]

[Local HD channels for some cities]

1-8    #   #   #   #   #   #   NA  NA

9-16   NA  NA  NA  NA  NA  NA  #   #

17-24  #   #   #   #   #   #   #   #

[Note, these can be very slow to appear]

Satellite transponders (16 total at 103º(ca))

[National HD channels beamed from D12 satellite]

1-8    NA  NA  NA  NA  NA  NA  NA  NA

9-16   #   #   #   #   #   #   #   #

17-24  #   #   #   #   #   #   #   #

Satellite transponders (14 total at 103º(cb)) [or 103º(b)]

[National HD channels beamed from D10 satellite]

1-8    #   #   #   #   #   #   #   #

9-16   #   #   #   #   #   #   NA  NA

17-24  NA  NA  NA  NA  NA  NA  NA  NA

Satellite transponders (9 total at SWM)

[You'll only see this if you have a Single Wire Multiswitch (SWM) dish]

1-8    #   #   #   #   #   #   #   #

9-16   #   NA  NA  NA  NA  NA  NA  NA

Yes it can.  Please use the template I provided in post #5 to submit your signal readings. 

Here's the data.  I captured it only for tuner 1, but in all cases tuner 2 had numbers that were very similar to tuner 1.

Satellite transponders (32 total at 101º)

[Most of your standard definition channels are beamed from 101ºW]

1-8    95  98 95 69 95 99 95 99

9-16  95 98 96 0 96 99 95 99

17-24 95 100 95 67 96 100 95 100

25-32 95 76 92 96 95 99 92 100

Satellite transponders (3 total at 110º)

[Not present with Slimline3 dish. No channels are currently beamed from this satellite]

1-8    NA  NA  NA  NA  NA  NA  NA  86

9-16   NA  74   NA  61   NA  NA  NA  NA

Satellite transponders (11 total at 119º)

[Not present with Slimline 3 dish. Local SD channels for some cities, Spanish package]

17-24  NA  NA  NA  NA  NA  51 0 0

25-32  0 0 0 0 0 0 0 0

Satellite transponders (16 total at 99º(s))

[Local HD channels for some cities]

1-8     0 0 0 0 0 0 NA NA 

9-16   NA  NA  NA  NA  NA  NA  21 100

17-24  0 0 100 100 0 0 24 0

25-32 NA NA NA NA NA NA NA NA NA

[Note: these can be very slow to appear]

Satellite transponders (14 total at 99º(c))

[National HD channels]

1-8   95 95 90 85 93 90 88 83

9-16  92 93 89 85 95 94  NA  NA

17-24 (all NA)

25-32 (all NA)

[Note, these can be very slow to appear]

Satellite transponders (16 total at 103º(s)) [or 103º(a)]

[Local HD channels for some cities]

1-8    0 0 0 0 0 0  NA  NA

9-16   NA  NA  NA  NA  NA  NA  23 100

17-24  0 0 98 98 0 0 26 0

25-32 (all NA)

[Note, these can be very slow to appear]

Satellite transponders (16 total at 103º(ca))

[National HD channels beamed from D12 satellite]

1-8    (all NA)

9-16  0 27 0 0 0 0 0 0

17-24 0 0 0 0 0 0 0 0

25-32 (all NA)

Satellite transponders (14 total at 103º(cb)) [or 103º(b)]

[National HD channels beamed from D10 satellite]

1-8  95 94 91 89 92 89 88 86

9-16  91 89 89 88 90 89  NA  NA

17-24  (all NA)

25-32 (all NA)

Satellite transponders (9 total at SWM)

[You'll only see this if you have a Single Wire Multiswitch (SWM) dish]

1-8     99 98 0 98 95 95 92 94

9-16   95 NA  NA  NA  NA  NA  NA  NA

Check tuner 2 for these signals.  If they are similar then I'd guess that you have a dish problem or less likely a problem with your VR.  In either case I'd call for a service visit.  It's free with the Protection Plan otherwise $50.