ipatch · October 11, 2023 17:02 · Oct 11, 2023 · Oct 11, 2023 · Oct 10, 2023 · Oct 5, 2023
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -14,7 +14,7 @@ the second tablet has an additional issue where the LED on the charger does not
 
 **oct 11 2023**
 
-tablet that does light up charger LED needs trace level BGA repair 😭 near the ITE chip. also several smd components near the SMD chip require replacement as the hot air knocked or removed the componement from its place.
+tablet that does light up charger LED needs trace level BGA repair 😭 near the ITE chip. also several smd components near the SMD chip require replacement as the hot air knocked or removed the componement from its place.  one of the components being C3615 a 0.1u 6.3V capacitor
 
 **oct 9 2023**
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -12,6 +12,10 @@ both surface tablets i have use the same logic board, ie. the `X910540-007`
 
 the second tablet has an additional issue where the LED on the charger does not illuminate.
 
+**oct 11 2023**
+
+tablet that does light up charger LED needs trace level BGA repair 😭 near the ITE chip. also several smd components near the SMD chip require replacement as the hot air knocked or removed the componement from its place.
+
 **oct 9 2023**
 
 got high resistance on the outer edges of both mosfets `q7005` and `q7002`. however did not get any resistance on the single inner pin inner side of the mosfets, labeled, `pwr_sl1_ext_dc_d` which i believe is the drain side of the mosfet
@@ -27,7 +31,7 @@ got high resistance on the outer edges of both mosfets `q7005` and `q7002`. howe
     - c6871 - 25V 0.22u
     - c6867 - 25V 0.22u
 
-- **Q** [x] if i remove the ITE chip from the board, will the charger led still light up on the charger, with the ITE chip removed from the board?
+- [x] **Q** if i remove the ITE chip from the board, will the charger led still light up on the charger, with the ITE chip removed from the board?
     - **yes** the led on the charger will still light up / illuminate. 👍️ with the ITE chip removed and the charger plugged in to the logic board.
 
 ## troubleshooting

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -6,17 +6,29 @@ when testing the Schottky Diode with my meter i got 0.2V with the red probe on t
 
 i was able to remove the ITE chip this afternoon using hot air and board preheater. i had my hot air on the lowest setting with temp at 395 and the board preheater at 300
 
+both surface tablets i have use the same logic board, ie. the `X910540-007`
+
 ## busted tablet #2
 
 the second tablet has an additional issue where the LED on the charger does not illuminate.
 
+**oct 9 2023**
+
+got high resistance on the outer edges of both mosfets `q7005` and `q7002`. however did not get any resistance on the single inner pin inner side of the mosfets, labeled, `pwr_sl1_ext_dc_d` which i believe is the drain side of the mosfet
+
 ## todos
 
 <a name="todos"></a>
 
 - [x] ~~post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.~~
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 - [ ] what is a good temperature for a soldering iron to remove excess solder from a circuit board with solder wick that uses a BGA chip?
+- [x] need to find replacement caps for the board that does not show LED on charger
+    - c6871 - 25V 0.22u
+    - c6867 - 25V 0.22u
+
+- **Q** [x] if i remove the ITE chip from the board, will the charger led still light up on the charger, with the ITE chip removed from the board?
+    - **yes** the led on the charger will still light up / illuminate. 👍️ with the ITE chip removed and the charger plugged in to the logic board.
 
 ## troubleshooting
 
@@ -34,6 +46,8 @@ the power on sequence for the device is broken down into 14 steps
 
 <a name="useful-links"></a>
 
+- badcaps.net / my thread tshoot no led on power supply
+  - https://www.badcaps.net/forum/showthread.php?p=1277849#post1277849
 - badcaps.net / Surface Pro 4 drawing no current, no power on
   - https://www.badcaps.net/forum/showthread.php?t=120449&highlight=surface+pro+power
 - stackexchange question about microsoft faulty power supply

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -2,10 +2,13 @@ A place for **collect**ing, **gather**ing, and **organiz**ing notes for repairin
 
 ## busted tablet #1
 
-when testing the Schottky Diode with my metter i got 0.2V with the red probe on the left side of the diode and when the red probe was placed on the right side of the diode i got **OL**
+when testing the Schottky Diode with my meter i got 0.2V with the red probe on the left side of the diode and when the red probe was placed on the right side of the diode i got **OL**
 
 i was able to remove the ITE chip this afternoon using hot air and board preheater. i had my hot air on the lowest setting with temp at 395 and the board preheater at 300
 
+## busted tablet #2
+
+the second tablet has an additional issue where the LED on the charger does not illuminate.
 
 ## todos
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -13,13 +13,30 @@ i was able to remove the ITE chip this afternoon using hot air and board preheat
 
 - [x] ~~post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.~~
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
-- [ ] what is a good temperature for a soldering iron to remove excess solder from a circuit board with solder wick that uses a BGA chip? 
+- [ ] what is a good temperature for a soldering iron to remove excess solder from a circuit board with solder wick that uses a BGA chip?
+
+## troubleshooting
+
+<a name="troubleshooting"></a>
+
+troubleshooting / power on sequence aka no power
+
+the power on sequence for the device is broken down into 14 steps
+
+1. `j7101` is the power power connector (removable) attached to the logic board the voltage signal travels across `pwr_sl1` to `pwr_slf` 
+2. `u7008` -> `sl1_pwr_good`
 
 
 ## useful links
 
 <a name="useful-links"></a>
 
+- badcaps.net / Surface Pro 4 drawing no current, no power on
+  - https://www.badcaps.net/forum/showthread.php?t=120449&highlight=surface+pro+power
+- stackexchange question about microsoft faulty power supply
+  - https://electronics.stackexchange.com/questions/221620/ms-surface-power-supply
+- badcaps / forum thread / tshoot ms surface 4 no power issue
+  -https://www.badcaps.net/forum/showthread.php?t=106763&highlight=microsoft+surface+pro
 - repair wiki
   - https://repair.wiki/w/Microsoft_Laptops_Surface_Range_Pro_Series_4
 - ifixit's guide for replacing the battery in a microsoft surface pro 4

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -22,8 +22,6 @@ i was able to remove the ITE chip this afternoon using hot air and board preheat
 
 - repair wiki
   - https://repair.wiki/w/Microsoft_Laptops_Surface_Range_Pro_Series_4
-- microsofts official service guide for the surface 4
-  - https://download.microsoft.com/download/9/3/5/93501ba4-9f8f-430b-97ca-9d603f42a0b7/Surface%20Laptop%203%20and%204%20English%20Service%20Guide.pdf
 - ifixit's guide for replacing the battery in a microsoft surface pro 4
   - https://www.ifixit.com/Guide/Microsoft+Surface+Pro+4+Battery+Replacement/60358
 - a really good write-up on diagnosing & repairing no screen issues of microsoft surface 4 pro

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -1,4 +1,4 @@
-A place for me to **collect**, **gather**, and **organize** notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
+A place for **collect**ing, **gather**ing, and **organiz**ing notes for repairing & fixing microsoft surface pro 4 tablet/pc.
 
 ## busted tablet #1
 
@@ -9,12 +9,21 @@ i was able to remove the ITE chip this afternoon using hot air and board preheat
 
 ## todos
 
+<a name="todos"></a>
+
 - [x] ~~post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.~~
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 - [ ] what is a good temperature for a soldering iron to remove excess solder from a circuit board with solder wick that uses a BGA chip? 
 
 
 ## useful links
+
+<a name="useful-links"></a>
+
+- repair wiki
+  - https://repair.wiki/w/Microsoft_Laptops_Surface_Range_Pro_Series_4
+- microsofts official service guide for the surface 4
+  - https://download.microsoft.com/download/9/3/5/93501ba4-9f8f-430b-97ca-9d603f42a0b7/Surface%20Laptop%203%20and%204%20English%20Service%20Guide.pdf
 - ifixit's guide for replacing the battery in a microsoft surface pro 4
   - https://www.ifixit.com/Guide/Microsoft+Surface+Pro+4+Battery+Replacement/60358
 - a really good write-up on diagnosing & repairing no screen issues of microsoft surface 4 pro

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -1,4 +1,4 @@
-just a place for me to **collect**, **gather**, and **organize** notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
+A place for me to **collect**, **gather**, and **organize** notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
 
 ## busted tablet #1
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -22,4 +22,4 @@ i was able to remove the ITE chip this afternoon using hot air and board preheat
 - a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets
   - https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
 - a comment i made on asking which battery contacts could short/kill the ITE chip on a microsoft surface pro 4
-  - https://www.youtube.com/watch?v=6ydT_RxYt-k&lc=Ugz9s-MplLtbq_we_O54AaABAg
+  - https://www.youtube.com/watch?v=6ydT_RxYt-k&lc=Ugz9s-MplLtbq_we_O54AaABAg
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -11,6 +11,7 @@ i was able to remove the ITE chip this afternoon using hot air and board preheat
 
 - [x] ~~post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.~~
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
+- [ ] what is a good temperature for a soldering iron to remove excess solder from a circuit board with solder wick that uses a BGA chip? 
 
 
 ## useful links

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -4,6 +4,8 @@ just a place for me to **collect**, **gather**, and **organize** notes related t
 
 when testing the Schottky Diode with my metter i got 0.2V with the red probe on the left side of the diode and when the red probe was placed on the right side of the diode i got **OL**
 
+i was able to remove the ITE chip this afternoon using hot air and board preheater. i had my hot air on the lowest setting with temp at 395 and the board preheater at 300
+
 
 ## todos
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -1,5 +1,9 @@
 just a place for me to **collect**, **gather**, and **organize** notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
 
+## busted tablet #1
+
+when testing the Schottky Diode with my metter i got 0.2V with the red probe on the left side of the diode and when the red probe was placed on the right side of the diode i got **OL**
+
 
 ## todos
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -8,7 +8,8 @@ just a place for me to **collect**, **gather**, and **organize** notes related t
 
 
 ## useful links
-
+- ifixit's guide for replacing the battery in a microsoft surface pro 4
+  - https://www.ifixit.com/Guide/Microsoft+Surface+Pro+4+Battery+Replacement/60358
 - a really good write-up on diagnosing & repairing no screen issues of microsoft surface 4 pro
   - https://www.aonemobiles.com.au/2020/03/microsoft-surface-pro-4-no-power-no-schematics-no-problem/
 - a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -12,6 +12,6 @@ just a place for me to **collect**, **gather**, and **organize** notes related t
 - a really good write-up on diagnosing & repairing no screen issues of microsoft surface 4 pro
   - https://www.aonemobiles.com.au/2020/03/microsoft-surface-pro-4-no-power-no-schematics-no-problem/
 - a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets
-  https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
+  - https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
 - a comment i made on asking which battery contacts could short/kill the ITE chip on a microsoft surface pro 4
-  https://www.youtube.com/watch?v=6ydT_RxYt-k&lc=Ugz9s-MplLtbq_we_O54AaABAg
+  - https://www.youtube.com/watch?v=6ydT_RxYt-k&lc=Ugz9s-MplLtbq_we_O54AaABAg
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -9,6 +9,8 @@ just a place for me to **collect**, **gather**, and **organize** notes related t
 
 ## useful links
 
+- a really good write-up on diagnosing & repairing no screen issues of microsoft surface 4 pro
+  - https://www.aonemobiles.com.au/2020/03/microsoft-surface-pro-4-no-power-no-schematics-no-problem/
 - a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets
   https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
 - a comment i made on asking which battery contacts could short/kill the ITE chip on a microsoft surface pro 4

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -3,7 +3,7 @@ just a place for me to **collect**, **gather**, and **organize** notes related t
 
 ## todos
 
-- [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
+- [x] ~~post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.~~
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -1,4 +1,4 @@
-hopefully place me to collect, gather, and organize notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
+just a place for me to **collect**, **gather**, and **organize** notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
 
 
 ## todos

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -3,7 +3,7 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 
 ## todos
 
-- [x] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
+- [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -3,7 +3,7 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 
 ## todos
 
-- [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
+- [x] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -3,7 +3,7 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 
 ## todos
 
-- [x] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
+- [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -3,7 +3,7 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 
 ## todos
 
-- [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
+- [x] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
   - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
 
 

diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -10,4 +10,6 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 ## useful links
 
 - a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets
-  https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
+  https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
+- a comment i made on asking which battery contacts could short/kill the ITE chip on a microsoft surface pro 4
+  https://www.youtube.com/watch?v=6ydT_RxYt-k&lc=Ugz9s-MplLtbq_we_O54AaABAg
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -10,4 +10,4 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 ## useful links
 
 - a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets
-- https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
+  https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -4,4 +4,10 @@ hopefully place me to collect, gather, and organize notes related to repairing &
 ## todos
 
 - [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
-  - this information would be useful in preventing the failure of the ITE chip for future and current repairs. 
+  - this information would be useful in preventing the failure of the ITE chip for future and current repairs.
+
+
+## useful links
+
+- a youtube playlist containing videos related to repairing microsoft surface pro 4 tablets
+- https://youtube.com/playlist?list=PLHobJ3oN5ZGfztfPKXbmxySgkpymBnkhl
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -1 +1,7 @@
-hopefully place me to collect, gather, and organize notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
+hopefully place me to collect, gather, and organize notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
+
+
+## todos
+
+- [ ] post comment in below youtube video asking author if knows which battery contacts can short the ITE chip when repairing a ms surface 4 tablet.
+  - this information would be useful in preventing the failure of the ITE chip for future and current repairs. 
diff --git a/microsoft-surface-pro-4-repair-notes.md b/microsoft-surface-pro-4-repair-notes.md
@@ -0,0 +1 @@
+hopefully place me to collect, gather, and organize notes related to repairing & fixing microsoft surface pro 4 tablet/pc.
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		hopefully place me to collect, gather, and organize notes related to repairing & fixing microsoft surface pro 4 tablet/pc.