• Two Commodore 64's that w

    From Dennis Katsonis@1:124/5016 to All on Sunday, October 04, 2020 07:32:00
    Subject: Two Commodore 64's that wont power on

    I have just received FOUR breadbin Commodore 64s. One is missing the mainboard, one turns on, but with a black screen, and two don't turn on
    at all (power LED does not light up).

    When our lockdown ends, I'm going to get a multimeter, but I'm wondering
    if there is a common and obvious cause for this that I could look at
    before I get a multimeter (which may not be for weeks because our state
    premier likes to imprison us).

    I've looked at the fuses, one was broken, but putting the good fuse in
    both machines didn't work.


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  • From Andreas Kohlbach@3:770/3 to Dennis Katsonis on Tuesday, October 13, 2020 01:12:48
    On Sun, 04 Oct 2020 07:32:00 +1300, Dennis Katsonis wrote:

    Subject: Two Commodore 64's that wont power on

    I have just received FOUR breadbin Commodore 64s. One is missing the mainboard, one turns on, but with a black screen, and two don't turn on
    at all (power LED does not light up).

    When our lockdown ends, I'm going to get a multimeter, but I'm wondering
    if there is a common and obvious cause for this that I could look at
    before I get a multimeter (which may not be for weeks because our state premier likes to imprison us).

    I've looked at the fuses, one was broken, but putting the good fuse in
    both machines didn't work.

    No specific idea. But the Youtuber Adrian's Digital Basement <https://www.youtube.com/channel/UCE5dIscvDxrb7CD5uiJJOiw> fixed a lot of
    dead or half-dead Commodores 64. Search his channel for "Commodore 64",
    may be one of the videos is helpful in your case.
    --
    Andreas

    https://news-commentaries.blogspot.com/

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  • From Clocky@3:770/3 to Dennis Katsonis on Monday, October 19, 2020 15:35:35
    On 4/10/2020 2:32 am, Dennis Katsonis wrote:
    Subject: Two Commodore 64's that wont power on

    I have just received FOUR breadbin Commodore 64s. One is missing the mainboard, one turns on, but with a black screen, and two don't turn on
    at all (power LED does not light up).

    Black screen is often a failed PLA. These can be replaced with modern equivalents.


    When our lockdown ends, I'm going to get a multimeter, but I'm wondering
    if there is a common and obvious cause for this that I could look at
    before I get a multimeter (which may not be for weeks because our state premier likes to imprison us).

    I've looked at the fuses, one was broken, but putting the good fuse in
    both machines didn't work.



    What supply are you using? If it's an original Commodore brick you
    should test the voltages first as they commonly fail and when they do
    they destroy the computer attached to it.

    Better still get at least a power saver or better still a modern
    replacement power supply.

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  • From Gary McCulloch@1:154/50 to Dennis Katsonis on Monday, October 26, 2020 06:40:23
    .-: On Mon 19-Oct-2020 9:36p, Dennis Katsonis@1:124/5016.0 said to Clocky DK: chip failed. With three boards, I should be able to get one working from DK: parts, but it won't be easy.

    But it will be well worth it!

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