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Should I pronounce it dead? — Parallax Forums

Should I pronounce it dead?

doggiedocdoggiedoc Posts: 2,246
edited 2011-02-19 14:12 in Propeller 1
It seems I made an "epic boo-boo" on one of my Prop kits. Can someone confirm the death of my Propeller Chip - 44-Pin QFP?

The error was mounting the chip rotated 90 degrees CW and not catching the mistake until after I had applied power.

I have remounted it in the correct orientation by lifting it with heat gun and replacing it properly.

:depressed: I do believe it is a lost cause now.

Paul

Comments

  • RaymanRayman Posts: 15,000
    edited 2011-02-19 09:20
    I've done that before too... I think it may have still worked afterward, but I don't really remember..
  • RavenkallenRavenkallen Posts: 1,057
    edited 2011-02-19 09:23
    Propeller Chip GFP...
    Time of death: Last night
    Cause of death: Improper mounting
    Chief suspect: Doggiedoc:)

    It might not be a complete lost cause. Did you try testing it?
  • doggiedocdoggiedoc Posts: 2,246
    edited 2011-02-19 11:07
    Ravenkallen wrote: »
    Propeller Chip GFP...
    It might not be a complete lost cause. Did you try testing it?
    How do you mean? Can you elaborate on testing method?
  • $WMc%$WMc% Posts: 1,884
    edited 2011-02-19 11:08
    If it doesn't work, The heat-gun probably finished it off
    '
    I here Taps and distant gun fire.(21 gun solute)
    '
    I herd their was a Mothers against abusing Propeller's organization out there. Be careful when you answer the door bell, Might be a bunch of protester out their
  • doggiedocdoggiedoc Posts: 2,246
    edited 2011-02-19 11:10
    @$WMc% - I fear you are correct sir. As for the MAAPO - I'll have to wow them with my good looks!!
  • $WMc%$WMc% Posts: 1,884
    edited 2011-02-19 11:32
    There you go, Thinking positive!
    '
    MAAPO
    You might get lucky with a Hot MILF if you express how hurt you are by loss of your little Prop.
  • MagIO2MagIO2 Posts: 2,243
    edited 2011-02-19 11:40
    I'm not sure ... why should it be dead? You applied some voltage to I/O PINs, but that's no problem as the I/Os are tristate during switch on.
    P31 was tied to Vss, but it's the Rx PIN of the PC boot connection. So, it depends on the hardware you have attached on PINs 30 and 28 which are output PINs during boot.

    What I'm not sure about are the XO and XI PINs. But my guess is that these are only activated if the program switches to external clock.

    So, I believe your prop had a pretty good chance to survive.
  • $WMc%$WMc% Posts: 1,884
    edited 2011-02-19 12:09
    MagIO2 wrote: »
    I'm not sure ... why should it be dead? You applied some voltage to I/O PINs, but that's no problem as the I/Os are tristate during switch on.
    P31 was tied to Vss, but it's the Rx PIN of the PC boot connection. So, it depends on the hardware you have attached on PINs 30 and 28 which are output PINs during boot.

    What I'm not sure about are the XO and XI PINs. But my guess is that these are only activated if the program switches to external clock.

    So, I believe your prop had a pretty good chance to survive.
    '
    You missed the heat-gun part!
  • Toby SeckshundToby Seckshund Posts: 2,027
    edited 2011-02-19 12:48
    Right back at the begining, I managed to reverse the VSS and VDD pins. The abused Prop still worked, mostly, When I tried it on "Turbulance" all ran as expected but the logo would break up and glitch slightly.

    The one I stuffed 9 Volts up departed there and then.

    (I have a drawer full of AVRs and I never seem to persicute them, Hey-Ho)
  • doggiedocdoggiedoc Posts: 2,246
    edited 2011-02-19 13:04
    $WMc% wrote: »
    MAAPO
    You might get lucky with a Hot MILF if you express how hurt you are by loss of your little Prop.
    That's what I'm thinking.... I could put on my puppy dog eyes!
  • doggiedocdoggiedoc Posts: 2,246
    edited 2011-02-19 13:07
    $WMc% wrote: »
    '
    You missed the heat-gun part!

    It appears that I have booger'd up the traces on the Schmartboard too. I'll just toss this one in the drawer and put another one together. Heck, I bought them to learn... I have learned!!

    Paul
  • LeonLeon Posts: 7,620
    edited 2011-02-19 13:20
    If you are going to make a habit of that sort of thing, you should get some Chip Quik:

    http://chipquik.com/

    I've been using it for years. I actually made some money with it, replacing a chip for someone!
  • potatoheadpotatohead Posts: 10,261
    edited 2011-02-19 13:51
    Leon, that's a great link. Thank you for sharing it.
  • doggiedocdoggiedoc Posts: 2,246
    edited 2011-02-19 14:12
    potatohead wrote: »
    Leon, that's a great link. Thank you for sharing it.
    Sure would have come in handy this morning. :blank:
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