Forum: Troubleshooting & Designing Networks
06-05-2021, 06:13 AM
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Replies: 2
Views: 1,005
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Forum: Troubleshooting & Designing Networks
06-05-2021, 05:23 AM
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Replies: 2
Views: 1,005
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Forum: Troubleshooting & Designing Networks
06-05-2021, 04:41 AM
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Replies: 2
Views: 1,005
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
03-31-2021, 07:01 AM
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Replies: 0
Views: 314
Replacement inductor L7710 for 820-4924
Hi I’ve searched digikey and mouser and haven’t found a direct replacement. All the donors i have (which are just 3)oddly have the same inductor damaged although the inductor works it’s just a eye...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
02-27-2021, 05:03 PM
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Replies: 4
Views: 510
Re: 820-4924 no chime
I just wanna fix the fan and audio circuit as it was also water damaged
My last question is on pp3v3S5_LL I have a weird overshot when testing with oscilloscope I Like a mosfet q7560 issue I’ve...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
02-27-2021, 11:58 AM
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Replies: 4
Views: 510
Re: 820-4924 no chime
First I’d like to make sure I indeed do have cpu fan activity. It’s unclear to me at this point if it is.
I just verified that It does boot :)
Second would be chime which also could be just audio...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
02-27-2021, 10:04 AM
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Replies: 4
Views: 510
820-4924 no chime
Hi I wanna start by saying this board was heavily damaged. when i got it it was completely dead. What's been replaced so far that had corrosion. u1900, u8030, u7400, q7320, q7321, q7310, q7311 and a...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-16-2021, 08:10 AM
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Replies: 12
Views: 1,271
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-15-2021, 05:28 PM
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Replies: 12
Views: 1,271
Re: 820-00165 "No Camera detected"
@piernov Hi I rechecked the power rails and it seems that all are up and running. I still question the clk as it is unstable sometimes reading good other times not. I have a few u1900 chips i was...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-13-2021, 08:16 PM
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Replies: 12
Views: 1,271
Re: 820-00165 "No Camera detected"
hello everyone I'm sorry for the slow response I've been working on other things:
I retested these signals today
PP0V675_MEM_CAM_VREFCA=.675V
PP0V675_CAM_VREF=.0V
PP1V8_CAM= 1.79V
PP1V2_CAM=...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-06-2021, 06:07 PM
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Replies: 12
Views: 1,271
Re: 820-00165 "No Camera detected"
No, I didn't see the multi media controller " Broadcom" only network controller with lspci it didn't show
I inspected u3900 under a microscope again but its very tight with the board. These chips I...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-05-2021, 06:06 PM
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Replies: 12
Views: 1,271
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-02-2021, 04:53 PM
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Replies: 12
Views: 1,271
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Forum: BIOS Requests ONLY!
01-02-2021, 10:29 AM
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Replies: 110
Views: 38,382
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-02-2021, 10:23 AM
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Replies: 12
Views: 1,271
820-00165 "No Camera detected"
Hi I have a 2- 820-00165 with the same issue No camera detected
History: Both had water damage around SMC. both when i got them had no green light. repaired a few blown resistors and traces....
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Forum: BIOS Requests ONLY!
01-01-2021, 01:59 PM
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Replies: 110
Views: 38,382
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Forum: BIOS Requests ONLY!
01-01-2021, 11:47 AM
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Replies: 110
Views: 38,382
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Forum: BIOS Requests ONLY!
12-31-2020, 05:17 PM
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Replies: 110
Views: 38,382
Re: ME Firmware Cleaning Guide
Hi, im trying to clean a ME region on a mba 7.1 im using this file MB71_003F_00B.scap
with uefitool ne alpha 58. I can't seem to find the ME region raw section.
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
01-19-2020, 07:00 PM
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Replies: 3
Views: 1,379
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-18-2020, 08:36 AM
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Replies: 9
Views: 1,140
Re: MacBook Pro 820-2915 no backlight
Well the WiFi issue was the cable 821-1311a one of the pins damaged. And the keyboard I saw it when I first opened it has a hole so I think someone burned the keyboard even though backlight still...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-17-2020, 07:36 AM
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Replies: 9
Views: 1,140
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-17-2020, 06:27 AM
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Replies: 9
Views: 1,140
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
01-17-2020, 05:54 AM
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Replies: 9
Views: 1,140
Re: MacBook Pro 820-2915 no backlight
Ok so the backlight is working know. But I think I have a sensor issue :( track pad works with clicking but no swipe keyboard works if you press same key several times WiFi not working at all any...
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