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    820-2828 Imac 27" 2011 - GPU issue

    Thanks a lot for your answer Duke. When I had a very bad time to find the other ones... I actually found 216-0811000 in Europe at a decent price... I must confess that my experience on BGA rework is not amazing but I managed to get my hands on a ZM-R6200 at a very cheap price. I assume it will...
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    820-2828 Imac 27" 2011 - GPU issue

    Hello, Just reopening this thread as I'm looking where to source the GPU to replace a defective one. Duke, would you mind giving us any link for this ? Thank you very much
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    Iphone 6 : VCC_MAIN, PP1V8_SDRAM & PP_BATT_VCC jumping voltage

    Hello, I have the following voltage behaviour when connecting the logic board through USB only : - PP5V0_USB is fine - VCC_MAIN jumps from 3.8V to 4.2V back and forth -PP1V8_SDRAM : jumps between several variable values between 0.1V and 1.8V -PP_BATT_VCC : jumps between several variable values...
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    Sharing boardview and schematics ??

    Thanks for making it that clear Louis I love corporates that go after European, North American or Australian citizens when the web is full of schematics / boardviews from other places. It's just like media antipiracy... Ridiculous... well I would actually say it is more ridiculous...
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    Sharing boardview and schematics ??

    Hi, Is it fine to share them and ask for them on the forum... Cheers
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    Acer S7-392 - Storm2 12302-1 - voltage dropes

    Well I managed to toast a chip : HPA02224RGRR-1-GP Problem is I couldn't find this chip so I bought the same non working PCB and I'm now waiting for the delivery. Is there any recommended place to buy these more advanced components ?
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    Acer S7-392 - Storm2 12302-1 - voltage dropes

    hI, PU4201 : ok --> AD_JK=AD+=19.22V a,nd PWR_AD+_2=6.35V PL4501 = 0V on both sides + continuity PL4502 = 0V on both sides + continuity I discovered some trouble with TPS51285ARUKR-GP. I only have 18.5V on one pin (my guess is DCBATOUT) and it's damned hot. The inductors are quite very hot as...
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    Acer S7-392 - Storm2 12302-1 - voltage dropes

    Hello, I'm fixing this motherboard. When connected to power supply only or battery only, power led lights on and fans spin for half a second every 5/6 seconds, corresponding to a general voltage drop to 0V on the logic board. I started to follow tracks ftrom DCIN but I feel this may take...
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    Help with a Bent 3GS Iphone logicboard

    Well swapping chips is my usual option, I wanted to take the opportunity to learn more about iPhone logic boards... at the same time I'm not sure that learning on a 3GS would be the most usefull experience for the future... Thanks for your fast answer
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    Help with a Bent 3GS Iphone logicboard

    Hello, I've been there for quite a while but never get the occasion to get involved or ask anything yet... so today is a first ! I have a 3GS Iphone in my hands that was bent because of a swallen battery and from which I need to recover the data. The board model is 820-2762-A (pictures are...
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