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Recommendation on cleaning rams slots on Cubes and slabs.

 
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Rob Blessin Black Hole
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Joined: 05 Sep 2006
Posts: 575
Location: Ft. Collins, Colorado

PostPosted: Tue Jul 25, 2017 4:04 pm    Post subject: Recommendation on cleaning rams slots on Cubes and slabs. Reply with quote

Hello NeXT Community: I've noticed today in paticular that after replacing caps on motherboards , I'm getting memory failed errors and it will list a bank or an actual slot , saying it is a bad simm. I bought new ram as in manufactured new and when I test the same 4 simms in another board they work fine. My suspicion is either the actual simms slot being the culprit or an additional failed component. To make sure it is not the ram as in a bad run , I'm going to test it with my black box simm checker.
My question would be is there any recommendation to clean ram slots carefully, I've used dust off , what about deoxit!

Best Regards Rob Blessin
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Rob Blessin President computerpowwow ebay sales@blackholeinc.com http://www.blackholeinc.com
303-741-9998 Serving the NeXT Community since 2/9/93


Last edited by Rob Blessin Black Hole on Tue Jul 25, 2017 6:06 pm; edited 1 time in total
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barcher174



Joined: 07 Dec 2012
Posts: 554

PostPosted: Tue Jul 25, 2017 5:35 pm    Post subject: Reply with quote

Yeah, contact cleaner should work. In my experience the cap next to the RAM slots can also leak underneath. That's difficult to safely clean. I use a specialty ultrasonic cleaner and solution to get at it. As for board level repairs, I have seen the buffer chips go bad on a few (Those need to be harvested from other boards, I know of no source). The sockets can also be replaced in more extreme cases.
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