Date: Tue, 22 Nov 2005 11:57:22 -0800 (PST) Subject: [q] Quadra 610/ DOS problem From: [EMAIL PROTECTED]Hello, Just wondering if anyone might be able to assist with a "dead" Q610/DOS. Problem is that I get the 'Chimes of Death' on Boot and no Picture on the monitor. It has 16mb of RAM and is maxed on Vram. I'd like to get it up and running so I can get file off the HD. Any Ideas to try?
As Ken wrote, the RAM is the first place to look. If that doesn't work, I'd pull the RAM (there's 4 MB on the MB, yes?) disconnect all SCSI cables (internal and external) and remove anything (DOS card) from the expansion slot.
Then test to see if you get a proper chime. If you do get a proper chime, then add things back a few at a time until the problem returns or until you're back in business. This is a standard kitchen-sink diagnosis method.
If the stripped down machine still doesn't chime properly, then you've got a power supply or a motherboard problem and probably motherboard (power supply problems tend to manifest as dead sets). In that case, I'd examine the motherboard carefully for darkened/discolored areas. Old Macs bite the dust as the electrolytic caps start to leak. The stuff they leak is apparently conductive and corrosive. If it hasn't corroded anything, then you cna probably get operational again by thoroughly cleaning the board. Some folks swear by running it through the dishwasher, but I prefer a thorough scrubbing with alcohol or spray and scrub with Flux Remover (available at Frys). To be really thorough, replace all the surface mount electrolytic caps with SM tantalum caps.
If there are no discolored areas, I'd guess that the on-board RAM has developed a fault. It's probably not too hard to scavenge some chips from old 4 MB SIMMs and replace it if you're reasonably skilled at soldering. I could do it but the shipping both ways is probably more than a replacement Q610 board.
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