03-18-2012 06:28 AM
It sounds to me that if you paid $200 to get the keyboard replaced, that fee probably included diagnosis and repair, so in that case they should have properly identified the damaged motherboard.
I think the only proper thing for them to do is either...
1. Repair it
2. Issue a revised estimate for a keyboard and motherboard and give you the option to decline and get a refund for the incomplete repairs
Of course this is just my opinion and I don't have all the facts.