[SOLVED]820-2915 No Trackpad. Keyboard only works once trackpad disconnected and reconnected
Liquid Damage. Someone cleaned it up before me so couldn't see where the spill was on board but there were red probe points on a lot of the WS_KBD points, below U5010 area and below U4900. Came in originally with no trackpad or keyboard.
Replaced:
U5701 and everything in surrounding area.
R7803, R7803 , Q7800 (I had 1.7V on PP3V3_S4 originally - now have 3.3V on PP3V3_S4 is correct)
J5713
U5805 and surrounding components.
U5010 + U4900
Symptoms now: no trackpad. Missing PP18V5_S4 when trackpad connected. Keyboard doesn't work in OS mode when connected on its own.
To get keyboard to work you plug in the trackpad, boot the machine, then remove trackpad cabe on J5800. Keyboard will work fine. Before this the keyboard sort of works and you can just about hold ALT down and select boot device by pressing the arrow keys repeatedly. Once in OS mode no keyboard at all unless you do the remove trackpad cable trick.
Anyone seen this before and can point me in the right direction? Have tried two different trackpads - same thing.
Z2_BOOST_EN is missing.
USB mouse and keyboard work fine.
Thanks,
Jon
Liquid Damage. Someone cleaned it up before me so couldn't see where the spill was on board but there were red probe points on a lot of the WS_KBD points, below U5010 area and below U4900. Came in originally with no trackpad or keyboard.
Replaced:
U5701 and everything in surrounding area.
R7803, R7803 , Q7800 (I had 1.7V on PP3V3_S4 originally - now have 3.3V on PP3V3_S4 is correct)
J5713
U5805 and surrounding components.
U5010 + U4900
Symptoms now: no trackpad. Missing PP18V5_S4 when trackpad connected. Keyboard doesn't work in OS mode when connected on its own.
To get keyboard to work you plug in the trackpad, boot the machine, then remove trackpad cabe on J5800. Keyboard will work fine. Before this the keyboard sort of works and you can just about hold ALT down and select boot device by pressing the arrow keys repeatedly. Once in OS mode no keyboard at all unless you do the remove trackpad cable trick.
Anyone seen this before and can point me in the right direction? Have tried two different trackpads - same thing.
Z2_BOOST_EN is missing.
USB mouse and keyboard work fine.
Thanks,
Jon
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