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Search: Posts Made By: kingskie
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-11-2021, 08:00 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

ok @mon2, tomorrow i will check. many thanks
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-11-2021, 07:43 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

the trackpad still original but the keyboard is not. so if you say like that if i disconnect keyboard and only connect trackpad with the logic board then the trackpad should function right? but it is...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-11-2021, 12:36 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

and now.......trackpad and keyboard no function again....sigh
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-10-2021, 11:31 PM
Replies: 10
Views: 412
Posted By kingskie
Re: 820-00840 dead 19.7v and 0.01A

i assume the mosfet is broken and replace it but still low on ppbus...could it be U7000 ?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-10-2021, 09:41 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

thanks a lot @mon2.. just check that L4802 is not connected on both side and replaced...now keyboard and trackpad working...hopefully this is all..
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-10-2021, 08:27 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

thanks for the reply @mon2
the keyboard is new changed by another shop..i tried to use trackpad from macbook 12" 2015 but still not working. ia m sorry @mon2 i dont have oscilloscope
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-10-2021, 04:41 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

so weird....now it comes back and keyboard and trackpad not function...ic check the voltage all ok
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-07-2021, 11:53 PM
Replies: 3
Views: 155
Posted By kingskie
Re: ipad air 2019 A2197 no display

yes but no schematic there..
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-07-2021, 11:08 PM
Replies: 3
Views: 155
Posted By kingskie
ipad air 2019 A2197 no display

hello,

does anyone have schematic. for ipad air 2019 A2197
this ipad turn on but no display and no backlight..

any help will be appreciated..
thanks before
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-07-2021, 10:27 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

i just change the flexible and now all normal..
thanks to @mon2
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-05-2021, 09:21 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

1. voltage on F4800 both sides 8.6V

2. PPBUS_G3H_TPAD_FLT, pin # 2 on inductor L4800 8.6V

3. PP3V3_G3H_KBD_F 3.29V

4. voltage @ PP5V_S0_KBD_F 5.1V

5. PP3V3_S4_TPAD_F 3.3V
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-05-2021, 01:28 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

can turn on but still keyboard and trackpad not function..but i can turn off with power button from keyboard..
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-04-2021, 10:14 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

ok @mon2,

i will try to assemble everything now..will update ASAP
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-03-2021, 10:14 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

just put back L4010 and no short detected..but C1348 beside L4010 is shorted and goes straight to CPU..C1348 resistance to ground is 58.48 ohm..is it normal?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-02-2021, 02:59 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

it's weird..after remove L4010 the short is gone..PP5V_S0 and PP5V_S0ALSCAM_F on L4010 both no short..
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-02-2021, 01:44 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

already removed but still short
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-02-2021, 12:48 AM
Replies: 35
Views: 869
Posted By kingskie
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-01-2021, 11:10 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

could it be C4013 that shorted?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 11-01-2021, 11:07 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

i just remove them and still got short on PP5V_S0..PPLCDBKLT_VDDD not shorted. took out U8230 still have short..
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-31-2021, 08:58 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

pin 2 (PP5V_S0) that shorted.. the resistance on this pin is 0.6 ohm.

yes i also looking in aliexpress..only one seller sells it..
actually can this board turn on with PP5V_S0 shorted to ground?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-30-2021, 03:20 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

i took out RA000 and measure PP5V_S4RS0 is not shorted so the culprit must be U8230 right since PM_SLP_S3_L and PP5V_S4 not shorted.

does anyone know which logic board that has U8230 (TPS22930)? i...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-29-2021, 09:24 PM
Replies: 9
Views: 475
Posted By kingskie
Re: macbook air A1932 stuck 5v and DFU mode

still connected to T2 but in recovery mode, not DFU mode...before it can connect with DFU mode but after error when revive than it became stuck in recovery mode in apple configurator
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-29-2021, 10:29 AM
Replies: 9
Views: 475
Posted By kingskie
Re: macbook air A1932 stuck 5v and DFU mode

not yet bro, do you have the same problem?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-29-2021, 03:26 AM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

hi @mon2,

right now i am not dare to turn on before i get the solution fot the short.
actually this macbook is ex repair from another repair shop.

here i attached the picture of flex cable.....
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-28-2021, 08:55 PM
Replies: 35
Views: 869
Posted By kingskie
Re: 820-00244 PP5V_S0 shorted to ground

i just clean it and check there is no oxidation on the board
Showing results 1 to 25 of 103

 
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