Successful slappage tells you that it's most likely a loose connection. ... In your case, pay special attention to the CRT socket itself (not the HV "suction cup" connection -- I mean the socket at the rear of the CRT). A little investigation, and you should be able to get that one to behave.

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I agree this is a likely cause of problems. Often the glue/gook used to keep the video board secured to the CRT neck socket dries out (or has been cut by someone servicing the unit in the past), making the connection liable to work loose if the machine is transported or jostled (or if it just sits in a place with temperature and humidity variation). A little hot glue, applied while gently pressing the video board onto the CRT socket to make sure it's fully seated, might do the trick. (All of this happening with the machine turned OFF of course!)

M

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I concur as well....it's amazing as these macs get older, how humidity can reek havoc on 'em...and keeping in mind, how old some of the ones still in service..I don't think the design team & engineers ever thought back in late 1992-early 1993, these machines would be existing and running 15 yrs down the line...today, stuff like the i-Mac, was design with a longer life span..but I have seen my share of i-Macs, with bad board boards..especially the 233 and 264 mhz versions..

One thing that I hated about the CC...is what a pain in the arse, to get at and remove the HD..and floppy drive...unlike many other similar macs