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    New 16mb 30-pin SIMMs Fail testing in CST SP3000

    Hello Tinker-ers, I recently purchased 16mb NP FP 30-pin SIMMS from Memory Masters on Ebay. All five of the new SIMMs failed testing when it came to CAS and RAS timing. (I have 4mb and 1mb SIMMs that have pasted this same test but I only have the new 16mb SIMMs.) I am new to the SIMM tester...
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    • 30-pin memory simm test
    • Replies: 0
    • Forum: Macintosh II
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    Quadra 840AV - screen corrupted at resolutions / bit depth requiring >1m VRAM

    I have two Q840AV logic boards that I have recapped. Both machines passed all tests on TechTool Pro 3. Everything seems to work on BOTH of them except…. The lower portion of the display when it requires more VRAM than the onboard 1M. See pics below. The VRAM simms are 80mhz and work well in...
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