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So what's the truth about lead-free solder ?

Discussion in 'Electronic Repair' started by Eeyore, Jul 24, 2007.

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  1. A very interesting posting.
    Sure, we must see that the 'aim of the game' is to sell new stuff to the
    In many case 'new' is not 'better', as we see for example with mp3 on
    portable players and even being played via HiFi, but then Vinyl was
    better then 44100 CD LOL hahahahahaha
    Well according to some anyways.
    In the same way MPEG2 (or H264) or whatever compression is not a lossless
    compression and YES has artefacts, BUT these are (the system is designed
    that way) not normally percieved as anying.

    The truth for me is that movies I have seen in the past on VHS do not touch
    me more then movies I see in HD, or normal digital.

    So 37 years, that puts you back to 1970, I started in professional broadcasting
    in 1968....
    Almost a year after color started here.
    I have seen it all, from iconoscope camera upwards...

    So, anyways, stuff needs to be sold, the madness started with widescreen,
    stretching people so they became really short and fat, and the consumer
    bought it...

    And even that still goes on.
    In the early color days transmisisons were closely guarded by many specialized capable
    engineers with years of experience and training.
    Thse days anyone can but a digital camera and produce quality that is better.
    Or quality that is worse.

    I have my house wired with cat, RJ45 is the connector, no UHF cables here,
    except form an antenne in the attick for long range digital terrestial.

    I absolutely have to disagree about the quality of HD satellite versus
    analog PAL, you must be joking right?

    At a resolution of 1980x1080i there is NO WAY analog can compare.
    I wanted to show you a screenshot, so I tuned to Astra HD promo,
    shows National Geograhics Channel, I have to agree no HD material :)
    just flipper in the water etc....

    The French had much better high detail demos.....

    Of course if you watch 1920x1080 progressive downscaled via UHF on a PAL TV
    in the other room it will not be better then than PAL TV's say <6MHz
    bandwidth, but I am sure you know that, SAME for settop box on a SCART with
    <50MHz bandwidth video amps, you need 200MHz pixel clock at least.

    I can only repeat: real HDTV you must see it to believe it, and the conclusion
    is that perhaps you only ever watched BBC and astra flipper stuff without
    any details.

  2. That part landed in the water, idiot. I am talking about the show, so
    don't go getting confused, cockroach. I know how easy it is for you to
    forget how to grasp what you read.
  3. Here is a screenshot of a testcard from satellite:
    So what is wrong?
    767x576 png, how you have a monitor with that resolution ;-)

    Now this picture travelled > 40000 km.

  4. That makes no sense, terrestial digital, here where I am, uses the SAME bandwith
    as satellite.
    An HOW can you compare the 2 things if you watch both on the same set?
    Of course it will be worse, now you have the problems of BOTH, minus
    the advantages of digital.
    As I stated before: Buy a good digital setup.

  5. The best purchase you can make for examining such things:

    I cannot do a capture from the HD DVD output, but I'd bet that even my
    Std DVD (it's a combo disc) side would look quite good coming though the
    computer, and I could post it in a.b.s.e.

    This oughtta be good... ;-]
  6. Well, OK, may I suggest Seagate HDs, I have one up 24/7 now for 6 years.
    Other shorter, but no failures so far, other makes have long ago failed.
    Yes PC boot up is slow, but having the PC allows one to also easily
    check the program schedules, read background info on programs, use
    VOIP, watch YouTube, post to Usenet etc.. something your granny would
    love to do I am sure.
    I would not trust anything to a repair shop....
    I know repair shops.
  7. If you want to test the monitor, Nokia monitor test is really nice:
    Good for CRT monitors, but also reveals a lot about LCD.

  8. Very NICE!

    Flawless even. Thanks!
  9. Actually there is something wrong in that testcard due to 16:10 aspect
    translation, here is the one from a normal 4:3 screen:

    This one is 1:1 pixel for pixel as it is received, the previous one
    was rescaled to 767x576, this one is as it comes in here in 720x576 PAL.
    Now that is a lot better!

  10. < snicker >


    Usenet lits score:

    AUK Offishal Tinfoil Sombrero award 05/07
    #20 Usenet asshole
    #6 Lits Slut
    #9 Cog in the AUK Hate Machine
    <approved by Lionel>
    #11 Most posting trolls/hunters/flonkers 2007
    #1 Disenfranchised AUK Kookologist.
    #1 AUK Galactic Killfile Award
    < we all know how well that works...LOL >
    #33 on Teh Buzzard lits o lub.
    #4 miguel's pest list, rev 1.1:
    Co-inventer of the "Prongtard Yap-Dog Award"

    <working on one of them specheel AUK awards>
  11. Arfa Daily

    Arfa Daily Guest

    Well, I have a friend who runs a large Sky installation company, and he has
    the latest dog's bollocks HD Sky box, and the latest dog's bollocks Sony all
    singing and dancing LCD widescreen TV and home cinema system, all hooked
    together HDMI, and when he showed me it on a Sky HD demo (and presumably Sky
    have hand picked this content to be the best available, unless the Frogs
    know something that they don't) I have to say that I was a little
    disappointed. Yes, when you get right up to the screen, you can see the
    hairs on the bee's legs - very impressive - but when you sit far enough back
    for the viewing of that size of TV to be 'comfortable', the resolution of
    your eyes is not good enough to pick out that level of detail anyway.

    I would have to be stupid to maintain that on paper at least, the digital
    satellite broadcasts in HD are not better than analogue PAL transmissions,
    but subjectively, as I have been maintaining from the start, on a good
    analogue TV with a good analogue signal going in, there is not a lot to
    choose, and unless you are talking top-notch digital as in satellite HD, in
    many cases, I still maintain that subjectively (there's that word again...)
    the PAL analogue solution wins out over the average digital one. There are
    also, of course, undeniable advantages to digital TV, but I really don't
    think at this stage, that picture quality is one of them.

    Of course, the artifacts placed on the picture by the digital display device
    only serve to exacerbate the situation, but that's another story ...

  12. Arfa Daily

    Arfa Daily Guest

    See my response ref my friend's 'good digital setup'

  13. OK, that is a good argument, how far away you are from the screen.
    I am getting old and near-sighted, I need glasses to see small detail
    close up, so that does require me to sit close in front of a big monitor with
    glasses, or get a projection screen of huge size..... without glasses.
    I am close to the monitor, close to the TV.
    I can still see pixels on the 1680x1050 screen, so I am not too worried.
    Finally managed to grap some sort of HD content from SkyPromo:

    1920x1088 Now how about PAL composite ;-)

    This is how I grabbed it in Linux:
    xdipo -c 1 -g '10.5 E' -f 12610.5 -p v -s 22000 -a 133 134 -o > q1.ts

    The 10.5 replace it where you see the satellite,
    the recording is transport stream q1.ts
    I wrote xdipo.

    Then I let it run for a few seconds, and converted all frames to pnm
    pictures with the magic command:
    mplayer -vo pnm q1.ts
    This generated
    -rw-r--r-- 1 root root 6266897 2007-07-27 16:50 00000001.ppm
    -rw-r--r-- 1 root root 6266897 2007-07-27 16:50 00000300.ppm

    300 had at least some detail.

    Now you need a 1980x10808 monitor.....

    More then 6MB for a screenshot.... :)
  14. Eeyore

    Eeyore Guest

    Exactly.... it's dumbing down.

    No surprise were're breeding a generation of idiots.

  15. Eeyore

    Eeyore Guest

    Can you remind me how The Prisoner ended ?

    If you haven't been to Portmeirion you should btw. It's a lovely place. It's the
    ultimate 'folly'.

  16. Eeyore

    Eeyore Guest

    Massive Prong and many more....

    Yes, I was aware of that but he had almost been behaving himself until this recent outburst.

  17. Eeyore

    Eeyore Guest

    Most posters seemed to be comparing the 'normal' signal that's readily available to us via
    terrestrial broadcast, cable or satellite. Certainly not any HD ones.

  18. Eeyore

    Eeyore Guest

    Obfuscation noted.

    So you accept that not all the fuel is stored in the wings or not ?

  19. Eeyore

    Eeyore Guest

    Have you considered a brain transplant ?

    A stationary picture is no way to evaluate the quality of a compressed signal.
    It eliminites the most offensive aspect of compression, motion artifacts.

  20. Eeyore

    Eeyore Guest

    And I had two of their top flight Barracuda series ( SCSI server types ) die in
    under a month each.

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