A1706 820-00239 u3100 #52 solder pad lost
Try to Replace U3100 (CD3215C00 chip) it was pad #62 ppbus_g3hot short to Ground (CB300 take out still short) after remove off the U3100 "short" disappear.
But for maybe temperature not enough high I found the solder pad #6 #50 #52 was lost and the #6 and #50 are GND I don't care but the #52 shows
"NC_USBC_XA_RESET_L" and I want to see where this point to go or come but the board view shows no-where to go or come.
Can you help me what this" NC_USBC_XA_RESET_L" to do and if I replace new ic chip without this #52 pad should the board working? (I already change two times and not work: the power meter go black nothing I don't know if it's bad soldering work or this #52 pad missed.(maybe it was bad soldering because under the ic chip there a thick glue layer before I didn't clean maybe some pad point not making contacted.
and if it is #52 pad lost problem how can I resolve it
Attached it the board view and schematic. many thanks.
But for maybe temperature not enough high I found the solder pad #6 #50 #52 was lost and the #6 and #50 are GND I don't care but the #52 shows
"NC_USBC_XA_RESET_L" and I want to see where this point to go or come but the board view shows no-where to go or come.
Can you help me what this" NC_USBC_XA_RESET_L" to do and if I replace new ic chip without this #52 pad should the board working? (I already change two times and not work: the power meter go black nothing I don't know if it's bad soldering work or this #52 pad missed.(maybe it was bad soldering because under the ic chip there a thick glue layer before I didn't clean maybe some pad point not making contacted.
and if it is #52 pad lost problem how can I resolve it
Attached it the board view and schematic. many thanks.
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