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| Macintosh LC475 death chime when RAM installed | |
| Posted by: Jon183 on 2020-09-19 09:59:09 Hi everyone, I have a recapped and ultrasonic cleaned LC475 that will work just fine with no RAM stick installed, but when one is, it'll do the death chime. Info: Board was not tested before recap, has no PRAM battery (a 10-pack is on the way though), I have been using the turn on, quickly turn off and back on again method to get it working with no battery.      | |
| Posted by: Byrd on 2020-09-19 11:25:50 What sticks of RAM have you tried, is there cap leakage around the RAM socket itself? | |
Posted by: Jon183 on 2020-09-19 11:36:57What sticks of RAM have you tried, is there cap leakage around the RAM socket itself?There was no sign capacitors were even leaking when I first looked at it, its been ultrasonic cleaned as it had lots of dust. I have tried tons of sticks, have a rather big pile of 72-pin modules, even a tested working apple branded 8MB resulted in a death chime. | |
Posted by: Jon183 on 2020-09-19 12:07:48There was no sign capacitors were even leaking when I first looked at it, its been ultrasonic cleaned as it had lots of dust. I have tried tons of sticks, have a rather big pile of 72-pin modules, even a tested working apple branded 8MB resulted in a death chime.Update: Reflowed all RAM slot joints using new solder and flux, still same result. | |
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