performance changed, but net result is about the same

MCM serial number	grade change	dates	initial status	final status	what happened in between
106	F to F	7/9 to 8/5	short of +5VD to ground.	serial string would not load.	Found short at HM surface mount cap. Fixed at PACE.
111	C to C	7/15 to 8/6	"3rd block of 32 channels dead to cal-injection, later 5th block showed anomaly".	3rd block worked (but low gain). 5th block dead (always 3FF). 3rd block recovered (maybe ramp setup was improved?).	stayed in clean tent.

MCMs which got worse:

MCM serial number	grade change	dates	initial status	final status	what happened in between
109	C to F	8/6 to 8/20	2nd preamp dead.	2nd preamp OK, but 5 of 8 AMU/ADCs didn't work. At least 4 of these AMU/ADCs worked on August 6th -- the other associated with previously dead preamp.	short in surface mount cap for that preamp found. Short fixed at PACE. Other surface mount components changed.
112	A to C-	7/8 to 8/23	grade A.	In the laser station, 4th group of AMU/ADC channels all overflow, 24 other channels dead. To check: Do these channels respond to bench-cal?	attached to Si+cable assembly. Surface mount components changed, shipped to CA twice.
113	F to F-	7/19 to 8/6	only first 32 channels worked	none of the channels worked.	As far as I know, this MCM remained in the clean tent without being touched.
116	A to C	6/? to 8/19	This MCM was not put through the "official" QA testing. It was one of the first 3 MCMs we received and was extensively tested. We did not find problems.	Si+MCM assembly tested on MCM test stand. 5th block of channels didn't work (AMU/ADC problem). The 4th and 6th groups failed intermittantly, but usually worked.	attached to a Si+cable assembly, surface mount components changed, shipped to CA twice
120	A to F	8/? to 8/18	"worked" sometime during the week of August 9-13. However, it was never put through the "official" QA tests.	Failed completely.	It remained in the clean tent. We believe this was damaged in handling.