820-02536 no keyboard

[bartech]

Water damage, at beggining no trackpad no keyboard i check and find short on ut320 and ut350 . chnge them and trackpad start working, i try working keybord and new board connecting keyboard and nothing change. What next to check?

 

[2informaticos]

So its MLB doesn't work with known good keyboard?
Be aware, the KB and TP must match on the new models.

 

[bartech]

keyboard not working whit good used keyboard, all parts original

 

[2informaticos]

Then the problem must be around JT201, or its connections to JT400.
Check first all LT20x coils (page 85).