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Search: Posts Made By: Terence Ng
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-10-2021, 06:05 PM
Replies: 0
Views: 568
Posted By Terence Ng
Dyson AM06 Intermittently oscillation turn ON

My Dyson having oscillation turn ON intermittently even fan in power off stage or it has been turn off oscillate via remote control. Try replace MOC3083 but the failure remain the same. Any other...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-01-2021, 07:27 AM
Replies: 4
Views: 679
Posted By Terence Ng
Re: MacBook A1425 (820-3462) No green light

Hi...
Noted with thanks...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-01-2021, 06:43 AM
Replies: 4
Views: 679
Posted By Terence Ng
Re: MacBook A1425 (820-3462) No green light

1) voltage @ PPDCIN_G3H_CHGR ?
>> 18.2V
2) voltage @ CHGR_UGATE ?
>> 0V
3) voltage @ CHGR_LGATE ?
>> 0V
4) voltage @ CHGR_ACOK ?
>> 3.4V
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 05-31-2021, 11:34 PM
Replies: 4
Views: 679
Posted By Terence Ng
MacBook A1425 (820-3462) No green light

Received an MacBook A1425 with can't power on...No green/orange led light. Some measurement has been taken as below:-

> SYS_ONEWIRE: ~3.4V
> SMC_BC_ACOK_VCC : ~ 3.4V
> ADAPTER_SENSE: ~3.4V
>...
Forum: Schematic Requests ONLY! 10-30-2020, 05:29 AM
Replies: 3
Views: 895
Posted By Terence Ng
Re: Samsung NP930QAA - Schematic

Now can power on with fan spin a few second and stop... but no display::( Schematic needed.. Somebody can help?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 10-27-2020, 08:47 PM
Replies: 11
Views: 1,534
Posted By Terence Ng
Re: Macbook Pro 15" 820-2850-A No Power

C5369 - No Mounted
R5371 - No Mounted
C5318 - No Mounted
U5313 - No Mounted
U5323 - No Mounted
U5101 - No Mounted
C5101 - No Mounted
U3301 - No Mounted
C3302 - No Mounted
U3300 - No Mounted
Forum: Schematic Requests ONLY! 10-27-2020, 12:26 AM
Replies: 3
Views: 895
Posted By Terence Ng
Re: Samsung NP930QAA - Schematic

Motherboard Part number BA41-02617A
Forum: Schematic Requests ONLY! 10-21-2020, 07:06 PM
Replies: 3
Views: 895
Posted By Terence Ng
Samsung NP930QAA - Schematic

Hi,
Anybody have NP9300QAA (Samsung Series 9 NB) schematic or anyway to
identify which part (Refer to attach photo) are they using because missing body marking?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-27-2020, 10:20 AM
Replies: 1
Views: 505
Posted By Terence Ng
Macbook Pro 13" A1502 backlight goes off

A1502 macbook pro having an issues which is backlight goes off after Apple logo with loading bar screen. LCD display OK (With BAcklight On) when it power on in SMC bypass mode. Any ideal where when...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-21-2020, 02:09 AM
Replies: 11
Views: 1,534
Posted By Terence Ng
Re: Macbook Pro 15" 820-2850-A No Power

Latest measurement, Power Rails measure as below with only adaptor plug in (no Battery):-
> PPBUS_G3H -- 12.57v
> PPBUS_CPU_IMVP_ISNS -- 11.58v
> PPDCIN_G3H -- 16.5v
> PP3V42_G3H -- 3.42v
>...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-21-2020, 01:57 AM
Replies: 11
Views: 1,534
Posted By Terence Ng
Re: Macbook Pro 15" 820-2850-A No Power

---Yes, fuse in good conditions
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-07-2020, 05:19 AM
Replies: 11
Views: 1,534
Posted By Terence Ng
Re: Macbook Pro 15" 820-2850-A No Power

Voltage measure with only battery condition:-
> PPBUS_G3H -- 12.57v
> PPBUS_CPU_IMVP_ISNS -- 11.58v
> PPDCIN_G3H -- 0v
> PP3V42_G3H -- 3.42v
> PP3V3_S5 -- 3.32v
> Others power rails no voltage.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-06-2020, 05:29 PM
Replies: 11
Views: 1,534
Posted By Terence Ng
Re: Macbook Pro 15" 820-2850-A No Power

Is Known good 85W Magsafe, battery is charging when plug in.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-06-2020, 08:47 AM
Replies: 11
Views: 1,534
Posted By Terence Ng
Macbook Pro 15" 820-2850-A No Power

Symptom: Plug in DC magsafe showing green light and change to orange colour for battery charging. In this case, unit unable to power on when power button has been press. No fan spinning, no start up...
Forum: Announcements & Related News 08-06-2020, 03:48 AM
Replies: 30,102
Views: 3,009,324
Posted By Terence Ng
Re: New Members - please post your introductions here

Names Terence Ng
46 - Birthday 21 Dec 1973.
Married, we have 4 kids.

MO:
I am hardware engineer and interesting in troubleshooting
Showing results 1 to 15 of 15

 
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