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HDR-FOX T2 Green screen of death?

Discussion in 'HDR-FOX T2 Freeview Recorder' started by xyz321, Sep 30, 2012.

  1. xyz321

    xyz321 Well-Known Member

    I've just had the green screen of death. I was watching live and then tried to start playing an HD program which immediately brought up the green screen of death. The box was completely unresponsive to any remote or front panel functions. I could not telnet into the box. After switching off at the back I now find the box is completely dead - no front panel LED.
     
  2. Black Hole

    Black Hole Felinos Guru

    That sounds pretty terminal :(

    If you are happy opening up, have a sniff around (literally) - a blown component often leaves a smell. Look for any fuses as well.
     
  3. xyz321

    xyz321 Well-Known Member

    No blown fuses or any obvious blown components but the bridge rectifier seems to have lost some of its diodes. It remains to be seen whether this is the primary failure or just collateral damage.
     
  4. Black Hole

    Black Hole Felinos Guru

    Consequential I reckon. Smoothing capacitor gone short circuit.
     
  5. xyz321

    xyz321 Well-Known Member

    My mistake, the bridge rectifier was fine. Anyway after much probing around, it suddenly decided to start working again. :)

    All very strange.
     
  6. Black Hole

    Black Hole Felinos Guru

    Not so strange. I've not looked inside one yet - does it have a wound transformer? Sometimes they are fitted with self-resetting thermal fuses. Sometimes they are fitted with non-resettable thermal fuses (bad news).
     
  7. Ezra Pound

    Ezra Pound Well-Known Member

    It doesn't really fit the thread title, How about My T2 has died or not as the case maybe :)
     
  8. xyz321

    xyz321 Well-Known Member

    It does have a wound transformer as part of a SMPS arrangement. The fuse is a 3.15A antisurge type in a radial PCB mount package - probably something like this (I haven't checked the physical dimensions).

    After several hours without power I would have thought that any resettable fuses would have had plenty of time to reset.

    Edit: I should also add that the problem recording, which appeared to start my green screen problem, now plays back fine.
     
  9. Black Hole

    Black Hole Felinos Guru

    The thermal fuse I have in mind would be buried inside the transformer windings, usually inaccessible.

    Perhaps we should split the topic at post #32 and give it a new title?
     
  10. xyz321

    xyz321 Well-Known Member

    I just had another crash. However, prior to crashing I saw this...
    Code:
    humax# opkg info screensaver
    Illegal instruction
    humax# md5sum /bin/opkg /lib/libc.so.0 /lib/ld-uClibc.so.0
    49c841fc813dd3f35c1d825980ba8045  /bin/opkg
    dd69216a66b6b70d249ea6ce3f57fe53  /lib/libc.so.0
    d8d9d222f8934cf6fb2235bf04103245  /lib/ld-uClibc.so.0
    
    After eventually getting it to reboot...
    Code:
    humax# md5sum /bin/opkg /lib/libc.so.0 /lib/ld-uClibc.so.0
    b53c5460ae299f61bafae442c4a8c310  /bin/opkg
    c0ca5235f4c79369c2750dd8f5bd8bab  /lib/libc.so.0
    d8d9d222f8934cf6fb2235bf04103245  /lib/ld-uClibc.so.0
    
     
  11. Ezra Pound

    Ezra Pound Well-Known Member

    I get this :-
    Code:
    humax# md5sum /bin/opkg /lib/libc.so.0 /lib/ld-uClibc.so.0
    da58327820dfa2a06a33a3656127ee95  /bin/opkg
    c0ca5235f4c79369c2750dd8f5bd8bab  /lib/libc.so.0
    d8d9d222f8934cf6fb2235bf04103245  /lib/ld-uClibc.so.0
    
    So I think opkg is corrupted, I would try a fix-disk
     
  12. af123

    af123 Administrator Staff Member

    You're probably just running different firmware versions.
    I think xyz321's point was that the checksums changed on reboot indicating memory corruption.
     
  13. xyz321

    xyz321 Well-Known Member

    I have just checked the MD5 hash of 'opkg' extracted from the hdf on a different system. It matches that of my second run above. I am running 1.02.29/2.12 BTW.
     
  14. Ezra Pound

    Ezra Pound Well-Known Member

    Ah, O.K. I am running 1.02.28/2.11 but I would have thought that pkgtools_1.0.0 was the same, so I guess opkg is seperate from pkgtools
     
  15. af123

    af123 Administrator Staff Member

    opkg is embedded in the custom firmware as it's needed for the bootstrap process. It changes with each firmware release.