Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!csd4.milw.wisc.edu!dogie.macc.wisc.edu!indri!nero!blake!ogccse!afoster From: afoster@ogccse.ogc.edu (Allan Foster) Newsgroups: comp.sys.mac Subject: Re: Problems with video Message-ID: <3099@ogccse.ogc.edu> Date: 7 Jun 89 06:57:06 GMT References: Reply-To: afoster@ogccse.UUCP (Allan Foster) Organization: Oregon Graduate Center, Beaverton, OR Lines: 44 In article ruff@topaz.rutgers.edu (Phil Ruff) writes: >The monitor on my Mac 512KE stays off unless I hit it or turn it on its >side. Thinking that the problem was a simple loose connection inside >the Mac, I opened the machine, but found nothing loose. The closest I came >to finding the problem was that the connector running from the analog >board to the tube (labelled "J2") seemed to turn on the monitor if pulled >closer to the tube. Have you gopt any idea how to get the monitor >connected again? Thanks... > >Phil Ruff >ruff@topaz.rutgers.edu Hi Phil, Yep your problem is loose solder joints on your analog board. You can re-solder them yourself if you dont mind getting into the mac. Re-solder all the joints that are connected to the plastic connectors as they all seem to crack and cause bad connections. I have done it on several macs and it works every time. Pay special atteintion to the outer joints as they always seem to go first. If you use a solder with about a 2% copper the joints seem to last a lot longer. The problem itself is with the different co-efficients of expansion for the board and the connectors. The thing that gives way are the solder joints. Hope that helps... Regards Allan Foster afoster@cse.ogc.edu -- Allan Foster UUCP : tektronix!ogcvax!afoster CSNet : afoster@cse.ogc.edu GEnie : A.FOSTER AppleLink : UG0035 MacNet : FOSTER