Re: A2289 Board 820-01987-A Dead?
Hey dbteckos. Sorry for the late answer since then I have bought another 820-01987 board and here with no signs of corrosion or other damage but it takes 200mA and 20V dont know why yet.. the old board are stock on DFU mode now and it only takes 80-96mA 20V
I measured the testpoint (beside J8401) for both board diode mode = Old board : 1.788 new board : 1.700
Here are some other measurements for old and new board
Ny board
L7270 = 14.30 ohm
L7210 = 4.30 ohm
L7220 = 4.30 ohm
L7410 = 3.93 ohm
L7420 = 3.93 ohm
L7702 = 43.3 ohm
L7030 = 2.68 Mohm
F7000 = 50 kohm both sides
L8102 = 27.33 ohm
L8100 = 0.46 kohm
L7690 = 1.6 Mohm
L7670 = 5.9 kohm
L8410 = 1.10 Mohm
Old board
L7270 = 13.7 ohm
L7210 = 2.50 ohm
L7220 = 2.50 ohm
L7410 = 3.66 ohm
L7420 = 3.51 ohm
L7702 = 24.3 ohm
L7030 = 2.26 Mohm
F7000 = 1.6 Mohm both sides
L8102 = 56.2 ohm
L8100 = 0.33 kohm
L7690 = 0.44 Mohm
L7670 = 0.40 Mohm
L8410 = 1.10 Mohm
Hey dbteckos. Sorry for the late answer since then I have bought another 820-01987 board and here with no signs of corrosion or other damage but it takes 200mA and 20V dont know why yet.. the old board are stock on DFU mode now and it only takes 80-96mA 20V
I measured the testpoint (beside J8401) for both board diode mode = Old board : 1.788 new board : 1.700
Here are some other measurements for old and new board
Ny board
L7270 = 14.30 ohm
L7210 = 4.30 ohm
L7220 = 4.30 ohm
L7410 = 3.93 ohm
L7420 = 3.93 ohm
L7702 = 43.3 ohm
L7030 = 2.68 Mohm
F7000 = 50 kohm both sides
L8102 = 27.33 ohm
L8100 = 0.46 kohm
L7690 = 1.6 Mohm
L7670 = 5.9 kohm
L8410 = 1.10 Mohm
Old board
L7270 = 13.7 ohm
L7210 = 2.50 ohm
L7220 = 2.50 ohm
L7410 = 3.66 ohm
L7420 = 3.51 ohm
L7702 = 24.3 ohm
L7030 = 2.26 Mohm
F7000 = 1.6 Mohm both sides
L8102 = 56.2 ohm
L8100 = 0.33 kohm
L7690 = 0.44 Mohm
L7670 = 0.40 Mohm
L8410 = 1.10 Mohm
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