Last weekend I put 18 logic boards in the dishwasher (normal wash with detergent, no dry). Before washing, none of them would show a happy mac; most displayed a scrambled or checkerboard video pattern.
Here are the results: 16 improved to show happy Mac: 2 classics with bad sound 2 SE/30's with bad sound 8 classic II's with bad sound 4 classic II's seem to be ok! 1 classic still scrambled, discarded. 1 SE/30 has a bad #1 SIMM socket, may or may not be cause of failure. probably will discard. My conclusion is that dishwashing is pretty effective at restoring old logic boards that fail, presumably due to leaking capacitors. But it is less effective at restoring the sound circuits that commonly fail. Replacing certain caps is a known fix for the sound problem, particularly on the SE/30. Later this month I'll wash some more SE/30, Classic II, and Quadra 840 logic boards that don't work. I don't think there is any point in washing boards more than once. I have not decided yet about washing boards that work but have bad sound. -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
