can share A2115 820-01779 boardview?
Request A2115 820-01779 boardview
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Re: Request A2115 820-01779 boardview
Here you go, not easy to find...recently purchased to repair the same. We were 99.99% done without the aid of the schematics - had a shorted tantalum that we found through sub-dividing the logic board regions. Found the shorted tantalum, removed it but board would not power up. Embarrassed to say that the dual mosfet we removed for the 5v rail was not soldered onto the board properly - it just took much more heat and flux to place it back. While we were checking against these schematics, the meter probe shifted the improperly soldered mosfet. So, in a way, the schematics helped
The board worked perfectly after this reflowing of the dual mosfet.
https://www.badcaps.net/forum/showthread.php?t=107156Attached FilesLast edited by mon2; 09-11-2022, 02:40 PM. -
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thank you for board view file
but
I have issue with 2019 iMac. all works fine except for speakers crackle during the chime when turning on.. unsure what the issue is, but have diagnosed with known working speakers, cpu swaps, re-casing board and even replacing with known working firmware chip but still have not found out the cause, hoping these schematics will help. if you have any other idea please feel free to sayComment
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thank you for board view file
but
I have issue with 2019 iMac. all works fine except for speakers crackle during the chime when turning on.. unsure what the issue is, but have diagnosed with known working speakers, cpu swaps, re-casing board and even replacing with known working firmware chip but still have not found out the cause, hoping these schematics will help. if you have any other idea please feel free to sayComment
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If anyone has the boardview and can share I would greatly appreciate it! I have the repair guide, but I still need the boardview. My BMC cannot initialize, likely due to damage around the enable switch....
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Channel: BIOS & Schematic Requests!
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Subject: Request for Boardview – RX 6900 XT MSI GAMING Z TRIO
Hello,
I am looking to repair my MSI RX 6900 XT GAMING Z TRIO graphics card and need the boardview to perform an accurate diagnosis.
Would it be possible to provide it to me or let me know where I could obtain it?
Thank you in advance for your help.
Best regards,
Aurelia...-
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by selectivetaoHello fellows,
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no problem I thought - I would just flash using my trusty CH341 and be on my merry way.
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Channel: BIOS & Schematic Requests!
12-13-2024, 09:37 PM -
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by JaneI tried to use this method:
Testing an N-channel MOSFET:
Step 1: Discharge the Gate (turn off the MOSFET)
Place the black probe (COM) on the Source (S) and the red probe on the Drain (D). The multimeter should show no continuity (high resistance or "OL" – open line).
Then, touch the black probe to the Source (S) and the red probe to the Gate (G). This discharges any stored charge in the Gate, turning the MOSFET off.
Step 2: Charge the Gate (turn on the MOSFET)
Now, place the red probe on the Gate (G) and the black probe on the...09-27-2024, 03:31 AM - Loading...
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