Hi all,
One of my QLs fail to boot and a Minerva RAM failure information appears just before completing the RAM test:
[img]Ram_test.jpg[/img
This leads to the information that all RAM chips 1-8 are bad. To me this is a little bit unlikely but of course still possible.
As the complete lower bank seems to be not working I am also suspecting IC 19 - 20 to have an issue.
Is there any way to further trace down whether the multiplexer ICs (19/20) or really the RAM ICs have an issue?
Thanks,
Stephan
RAM failure
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Re: RAM failure
Hi,
Try running the Ramfail_bas programme from the Minerva support disk and it will tell you which ram chip is faulty.
Try running the Ramfail_bas programme from the Minerva support disk and it will tell you which ram chip is faulty.
Regards,
Derek
Derek
Re: RAM failure
Hi Derek,
thanks for your answer. This is basically what I did but using the tool here:
https://www.nightfallcrew.com/minervaram/index.php
It tells me that all Ram chips from 1 to 8 are faulty. Which is somehow unlikely to me and let me think to check for other possible causes first before changing all 8 ram chips.
Stephan
thanks for your answer. This is basically what I did but using the tool here:
https://www.nightfallcrew.com/minervaram/index.php
It tells me that all Ram chips from 1 to 8 are faulty. Which is somehow unlikely to me and let me think to check for other possible causes first before changing all 8 ram chips.
Stephan
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- Font of All Knowledge
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- Joined: Mon Dec 20, 2010 11:40 am
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Re: RAM failure
Hi Stephan,
I forgot about the NightfallCrew web page.
If all the ram are faulty, maybe as you suggested it is the decoder chips that are causing problems.
I used to test each gate in chip with a logic probe, time consuming, but finding the fault without removal of the logic chip and testing the in a chip tester.
I forgot about the NightfallCrew web page.
If all the ram are faulty, maybe as you suggested it is the decoder chips that are causing problems.
I used to test each gate in chip with a logic probe, time consuming, but finding the fault without removal of the logic chip and testing the in a chip tester.
Regards,
Derek
Derek
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