Pegasos II G4 CPU Card
  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Hi, my Pegasos II G4 CPU card is no longer working, I think the CPU card got slightly warped from the weight of the heatsink/fan over time, and perhaps now the CPU would need to be re-flowed.

    I've seen lots of videos of re-flowing using a heat gun on Youtube, do you think this could potentially work?

    Failing that, does anyone know a place that could repair the CPU card?

    Thanks,

    Darren

    [ Edited by HammerD 06.12.2022 - 13:53 ]
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »06.12.22 - 19:52
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  • MorphOS Developer
    zukow
    Posts: 644 from 2005/2/9
    From: Poland
    Hi, first check if none of 4420 chips are burnt 8wfyHoR.jpg
  • »06.12.22 - 21:24
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Quote:

    zukow wrote:
    Hi, first check if none of 4420 chips are burnt 8wfyHoR.jpg


    ok, will do, and if they are not? Anyway I will post some photos of the board.

    Darren

    [ Edited by HammerD 06.12.2022 - 15:26 ]
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »06.12.22 - 21:25
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  • MorphOS Developer
    zukow
    Posts: 644 from 2005/2/9
    From: Poland
    Changing it (SI4420DY N-FET 30V 10A 3W) should help (if it is burnt) and it is a lot easier than reballing cpu, also reballing cpu won't help if this IC is broken :)

    I know 3 cards with this component burnt (one is laying next to me).

    [ Edited by zukow 06.12.2022 - 21:34 ]
  • »06.12.22 - 21:33
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Quote:

    zukow wrote:
    Changing it (SI4420DY N-FET 30V 10A 3W) should help (if it is burnt) and it is a lot easier than reballing cpu, also reballing cpu won't help if this IC is broken :)

    I know 3 cards with this component burnt (one is laying next to me).


    I think you may be right. I took a photo and there was a white blob on it. I used isopropyl alcohol to swab it and it looks like the plastic of the chip is melted.

    Link to photo here before I cleaned the area. After I cleaned it, it was just black melted circular plastic.

    https://photos.app.goo.gl/p4Pzq5tjzKqBM87p9

    So I am screwed I guess? Is this possibly a design problem? Normally you would think this should not happen. I did not even use it that much!

    [ Edited by HammerD 06.12.2022 - 16:59 ]
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »06.12.22 - 22:45
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  • MorphOS Developer
    zukow
    Posts: 644 from 2005/2/9
    From: Poland
    Yep, seems to be burnt. Probably some design issue. Change it and hopefully your Peg2 will be ok.
  • »06.12.22 - 23:12
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Quote:

    zukow wrote:
    Yep, seems to be burnt. Probably some design issue. Change it and hopefully your Peg2 will be ok.


    Thanks, would this be the correct chip?

    https://www.digikey.ca/en/products/detail/rohm-semiconductor/RSS100N03FRATB/8026642?utm_adgroup=General&utm_source=google&utm_medium=cpc&utm_campaign=PMax:%20Smart%20Shopping_Product_Zombie%20SKUS&utm_term=&productid=8026642&gclid=Cj0KCQiA7bucBhCeARIsAIOwr--tyD8Tc-dheHIkFICO2OT1t5dWYGAeQKDlsYcZ1eJveyjFb3CyENQaArC2EALw_wcB
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »06.12.22 - 23:16
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  • MorphOS Developer
    zukow
    Posts: 644 from 2005/2/9
    From: Poland
    this one: https://www.digikey.ca/en/products/detail/infineon-technologies/SI4420DY/358252
  • »06.12.22 - 23:29
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Quote:

    zukow wrote:
    this one: https://www.digikey.ca/en/products/detail/infineon-technologies/SI4420DY/358252


    Crap, it says that one is no longer manufactured.... :(

    Does the G3 card have the same chip? I have a working G3 CPU card.

    [ Edited by HammerD 06.12.2022 - 17:31 ]
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »06.12.22 - 23:30
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    koszer
    Posts: 1246 from 2004/2/8
    From: Poland
    Quote:

    HammerD wrote:
    Quote:

    zukow wrote:
    this one: https://www.digikey.ca/en/products/detail/infineon-technologies/SI4420DY/358252


    Crap, it says that one is no longer manufactured.... :(


    I think you can still find these chips on eBay. Just look for SI4420DY.
  • »07.12.22 - 13:34
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    KennyR
    Posts: 876 from 2003/3/4
    From: #AmigaZeux, Gu...
    Quote:

    zukow wrote:
    Yep, seems to be burnt. Probably some design issue. Change it and hopefully your Peg2 will be ok.


    Uhm well, it would also be wise to check the components around it to make sure it was the culprit and not the victim. Mosfets and caps are usually the culprits when you get a burned chip.

    Edit: Never mind, the 4420 *is* a mosfet.

    [ Edited by KennyR 07.12.2022 - 19:51 ]
  • »07.12.22 - 20:49
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    KennyR
    Posts: 876 from 2003/3/4
    From: #AmigaZeux, Gu...
    If you do manage to fix it, a little heat transfer pad and a heatsink may help to stop it happening again.
  • »07.12.22 - 20:56
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Quote:

    KennyR wrote:
    If you do manage to fix it, a little heat transfer pad and a heatsink may help to stop it happening again.



    Yes I'm not sure what I will do yet. I can probably get the chip itself pretty cheap, but replacing it is beyond my skills. Yeah I could try to do it myself but would probably screw it up...so for me to get it done by an electronics shop or some other place may not be worth the cost.

    Still thinking about it.
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »07.12.22 - 21:28
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    I have ordered the chip from eBay...will take awhile to arrive. I will keep this post updated.

    Darren
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »09.01.23 - 19:17
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  • rob
  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    rob
    Posts: 139 from 2008/7/22
    I'd suggest contacting Acill since he's well known in the Amiga communtity and his work is highly regarded.

    https://acillclassics.wordpress.com/contact/
  • »09.01.23 - 21:05
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    Quote:

    rob wrote:
    I'd suggest contacting Acill since he's well known in the Amiga communtity and his work is highly regarded.

    https://acillclassics.wordpress.com/contact/


    Thanks Rob. Acill is quite far from me but there are local electronics shops or perhaps mobile phone repair shops that could do the swap (if I get cold feet trying to attempt it myself :)

    Darren
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »10.01.23 - 14:53
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 236 from 2003/7/28
    From: Canada
    I replaced the chip and the CPU card came back to life, but no OS would fully load. I could get to the Openfirmware prompt and select an OS to load (eg. OS4.1 or MorphOS) and it would start to load and then just hang.

    I think there were other issues with the BGA solder connections to the G4 due to stresses overtime of heavy heatsinks "warping" the circuit board and BGA solder connections of the G4. I tried to fix that by heating the board up in my oven but that appears to have totally killed it. Now it won't even POST to openfirmware.

    I may try it again to see if it comes again back to life, but as of this point it's dead after my oven baking experience.
    A4000/060/PPC-200MHz, A4000T/060/PPC-233MHz, CD32, MicroA1, Pegasos 2 G4, AMD Phenom Quad Core 2.5GHz, MacMini 1.5GHz/64MB VRam...mwwmwahhh :)
  • »23.01.23 - 18:50
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    polluks
    Posts: 795 from 2007/10/23
    From: Gelsenkirchen,...
    "...heating the board up in my oven" who told you that?!
    Pegasos II G4: MorphOS 3.9, Zalman M220W · iMac G5 12,1 17", MorphOS 3.18
    Power Mac G3: OSX 10.3 · PowerBook 5,8: OSX 10.5, MorphOS 3.18
  • »01.02.23 - 15:45
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  • Order of the Butterfly
    Order of the Butterfly
    sailor
    Posts: 358 from 2019/5/9
    From: Central Bohemi...
    Quote:

    polluks wrote:
    "...heating the board up in my oven" who told you that?!


    Unfortunatelly youtube is full of such baking examples :-(
    Even if it is sometimes works ( corrupted tin joints ), it causes more harm than it improves.
    Hands off this.
    AmigaOS3: Amiga 1200
    AmigaOS4: Micro A1-C, AmigaOne XE, Pegasos II, Sam440ep, Sam440ep-flex, AmigaOneX1000
    MorphOS: Efika 5200b, Pegasos I, Pegasos II, Powerbook G4, Mac Mini, iMac G5, Powermac G5 Quad
  • »25.03.23 - 10:23
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    CountRaven
    Posts: 566 from 2007/12/11
    From: Greece
    I have two g3 cpu cards that are broken.

    I wonder if there is still someone who is able to make a check and perhaps fix them.

    You can reply on this topic or send pm.

    I also got two broken mobos. One Peg1 and one Peg2.
  • »27.03.23 - 03:11
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    CountRaven
    Posts: 566 from 2007/12/11
    From: Greece
    And yeah this oven thing never seemed like a good idea for me.


    [ Edited by CountRaven 27.03.2023 - 03:15 ]
  • »27.03.23 - 03:11
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