820-00239 5V 0.12A

Vertx

Member
Hello!,
Got liquid damaged 820-00239 board, that takes only 5v and 0.12A, looks like someone already tried to work on this board, because found out that cap C6905 had hole on pin1 - PPVIN_G3H_P3V3G3H. Would you think connecting C6905 pin 1 to C6906 pin 1 would be ok in order to keep working on this board or hole already causing too many problems on this dataline?,
Checked D6902 pin 3 on resistance mode - only 043.2 Ω
U6903 pin 10 (PM_EN_P3V3_G3H) - 0.7V only.
U700 had flux under it so looks like someone tried to replace it already.
 

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2informaticos

Administrator
Staff member
You can test without C6905.
Vut nust correct the wring resistance to ground first.
Remove C6905/06.
If still low, then remove U6903 too.
If low value again, then you have problem inside board, between copper layers.
 
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