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Is this Amiga 4000 CPU slot faulty?

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Hello friends,

i have the following problem with my beloved amiga 4000. I have a micronik 
full tower with Mediator PCI board, the computer works ok, but after some time 
the CPU board seem not to make proper contact anymore. In fact it could happen 
that at a cold boot the green light doesn't flash, remaining at the low green 
color, the screen stays black, the floppy drive doesn't click.
If I unplug the CPU board then plug it on again it works ok for a while that 
the problem comes out again.
Sometimes it happen even while the system booted and i am using the computer, 
amigaOS freezes and if I make a warm reboot the green light acts the same 
(doesn't flash and stays in the first low stage).

It cannot be the CPU board as it makes exactly the same both with the CSPPC 
and the 3640 original board.

Last year the mob had some repair (new capacitor, 64mb hack, clock battery 
leak) and i asked the repairer to change the CPU slot (so now it should be 
almost brand new) but the problem come back and was never truly solved.

What could it be? Any suggestion how to solve it and who can repair it once 
for ever?

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Is this Amiga 4000 CPU slot faulty? amministrazioni billi <amministrazioni.billi@gmail.com> - 2018-10-02 06:03 +0300

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