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Thread: amiga 512k expansion problem

  1. #1
    gleegum's Avatar
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    Default amiga 512k expansion problem

    Hi,
    I have this memory expansion (see pic) that works but only after 5 min (aprox.) after turning on the A500.
    It has a switch to turn the memory on/off, so if I turn it off, the Amiga works, if it's turned on the Amiga keeps rebooting without completing the self check. After 5 min the Amiga gives a guru meditation screen and upon rebooting it works fine.

    Things I've tested:
    - re seating the module
    - re solder all the components in the module

    I think the problem lies in some component in the memory module, any ideas?
    TIA
    Click image for larger version. 

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  2. #2
    irix's Avatar
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    Default

    Have you tested the switch itself with a multimeter? It could be dusty/rusty and not give 100% connection all the time?

  3. #3
    gleegum's Avatar
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    Default

    Quote Originally Posted by irix View Post
    Have you tested the switch itself with a multimeter? It could be dusty/rusty and not give 100% connection all the time?
    No, i have not tested the switch. Will take a look at it. Thanks for your suggestion.


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