sh2u+@andrew.cmu.edu (Scott T. Huang) (04/24/91)
Somehow my Mac II doesn't supply enough power to my keyboard and mouse. My Mac II is fine otherwise. The mouse doesn't respond and when I type things onto my keyboard, there is no response. Oddly though, I pressed the power key to start up my computer, and that worked!! Also, if I just plug the mouse into the ADB port, the mouse worked, but it won't with a keyboard, and the keyboard don't work alone too. What's up???!!! Everything seems to work fine, but the computer store wants to charge me $500 to exchange the logic board!!!!!!!!!! ______________________________________ Scott Huang sh2u@andrew.cmu.edu ______________________________________
rsarin@aix01.aix.rpi.edu (Raman K. Sarin) (04/24/91)
In article <Qc5_u1u00aw6M_VUpo@andrew.cmu.edu> sh2u+@andrew.cmu.edu (Scott T. Huang) writes: >Somehow my Mac II doesn't supply enough power to my keyboard and mouse. >My Mac II is fine otherwise. The mouse doesn't respond and when I type >things onto my keyboard, there is no response. Oddly though, I pressed >the power key to start up my computer, and that worked!! Also, if I just >plug the mouse into the ADB port, the mouse worked, but it won't with a >keyboard, and the keyboard don't work alone too. > Hmm. Sounds like that well known Hardware bug that Apple somehow refuses to fix rears it's ugly head again, Did you ever unplug your Keyboard or mouse while the machine was on? If you did you could have blown the receivers on the mother board for the ADB bus, and this causes your dealer to say Ahh, you need a new motherboard. Apple must know about this (and must have known about it for years (as my 4 year old SE did it) but they refuse to do anything, like put lock ing connectors on the plugs so they won't accidently pull out, or putting some sort of protection on the circuit. Come on guys, it can't be that hard, I'm sure just about any EE could handle it. - a little annoyed at having to replace three motherboards, so now all my cables are duct taped in place Raman Sarin