Re: lisa 2 startup problems

Hello everybody,

James you might be right, I think it is possible I have hot-plugged the floppy drive (connected and disconnected the ribon cable with the Lisa working)

I worked a lot today to find the cause for the new problem of the IO Board, i found out that when I desolder and remove U7B, I can get a CPU Error on the screen, the image is very fuzzy tough and not very readable, I have tried to desolder and remove all chips directly connected to the adress bus and data bus and nothing changed, when I removed U7B i could finally get this image: http://imageshack.us/photo/my-images/405/dsc0508q.jpg/ otherwise, the white

I have installed and soldered the all removed chips one by one and found out that U7B is a link to the problem, I say link because i replaced it with a new chip and the white screen with the cpu error can not be seen any more. but the rest of the screen remains the same.

Now, I cannot make any more tests because I don't whant to fight to my girlfriend but I have to test the chips related to the FDC Controller.

-- 
-----
You received this message because you are a member of the LisaList group.
The group FAQ is at http://lowendmac.com/lists/lisa.html
To post to this group, send email to lisalist_at_email.domain.hidden
To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden
For more options, visit this group at http://groups.google.com/group/lisalist


text/html attachment: alternate version of message