20 Dec
2006
20 Dec
'06
1:28 p.m.
Well, I thought there might be loosing solder on board. So I baked the KA655
in a oven, slowly turn up the temperature, peaked to 450F till the solder
melt. Then I let it cool down slowly.
This time it failed self test #31. I thought it was beyond my ability to
repair, so I heated the board on stove and picked the big chips off the
board with a pair of chopsticks (it is easy for those chips with heat
sinks). I think many of you do not get a chance to peek the bellies of those
chips, so I post the photo on my website. You can find it here,
http://www.mscpscsi.com/PHOTOS/KA655_chips.jpg
Five square chips other than the 78332 CVAX are belly up.
vax, 9000
