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Author Topic: 128 Mb module not working in Blizzard PPC. Where is the problem ???  (Read 3035 times)

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Offline EffyTopic starter

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So far I have sold at least 20 identical 128 Mb memory modules. The first ones are still working in my own Blizzard PPC 240/060 but to avoid damaging while testing all the other modules, I have now used an old 80486 to test the modules. If the memory holder breaks off then it´s no drama, but if the same thing happens to my Blizzard PPC then it would kill me.
So, every module I sold is tested in the 80486. A single module is inserted and computer is turned on, memory is being checked in Bios and Windows is being loaded. So far none of my modules has failed. But I did get two bad reports from two buyers :

-Buyer 1) both modules work 100% if inserted seperately but when used together then only one will be "seen" ...  :-o

-Buyer 2) one module is not working, computer runs slow, as the buyer said "I've tested both simms in isolation and this one simm causes either the machine not to boot or to run slowly when it does boot.." so I told him to send the module back and I did refund him as this seems the only fair thing to do. But when I tested the returned module it turned out that it worked without a single problem, concluding that it´s not really faulty  :-o

Can anybody please help me out on this riddle ???  :-? Is there something wrong with some cards ??? The memory I use is 128 MB RAM SIMM 72-PIN - FPM RAM - 66 MHz - 5V - 60ns - Parity ...

Offline EffyTopic starter

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Buyer 1 has tried them independatly, one module on the card and when it works he removed the one and tried the other one on the card. That way each module worked just fine, but not when used together ... have nu clue why this happens ...

Offline EffyTopic starter

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Think I am the one who misunderstood you. I don´t know if he tested each socket, I only know he tested each module ...

Offline EffyTopic starter

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Tahoe : that´s the first reasonable explanation I have heard that actually makes sense :-D

Sorry, had two major big glasses of red wine and french ries with sardines  :lol:  

Offline EffyTopic starter

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Re: 128 Mb module not working in Blizzard PPC. Where is the problem ???
« Reply #4 on: June 01, 2005, 07:13:35 AM »
And that´s another great explanation !! I always use a tower for testing as I don´t have a desktop anymore so I didn´t think of power supply problems ..