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Cpuswe
Joined: 15 Mar 2005
Posts: 2214
Location: Karlskrona, Sweden
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 Posted: Wed Feb 08, 2006 12:06 pm Post subject: Anything worth warming up the heatgun for? |
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Anyone seeing anything remotely collectable?
/T
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Wed Feb 08, 2006 12:40 pm Post subject: |
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| before you do, I noticed one ebay seller left the chips on the pcb, looks like he used a bandsaw to cut the board up. I was thinking that would be a nicer way ( if the cuts were good) of displaying some chips ( lik ethe laptop cpus on the small pcbs), rather than heating it up and taking it off the board. |
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sammyc
Joined: 09 Dec 2005
Posts: 1668
Location: Scottish Borders
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| Posted: Wed Feb 08, 2006 1:10 pm Post subject: |
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| JAC wrote: | | before you do, I noticed one ebay seller left the chips on the pcb, looks like he used a bandsaw to cut the board up. I was thinking that would be a nicer way ( if the cuts were good) of displaying some chips ( lik ethe laptop cpus on the small pcbs), rather than heating it up and taking it off the board. |
acutually a good idea if it is done professionally and not hacked!
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Wed Feb 08, 2006 1:11 pm Post subject: |
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| yeah, those surface mount chips look much better "in the environment" than they do removed with solder blobs on their legs and bent pins. |
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Wed Feb 08, 2006 1:12 pm Post subject: |
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oh, and cpuswe, those are some really cool chips  |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Wed Feb 08, 2006 1:22 pm Post subject: |
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| sammyc wrote: | | JAC wrote: | | before you do, I noticed one ebay seller left the chips on the pcb, looks like he used a bandsaw to cut the board up. I was thinking that would be a nicer way ( if the cuts were good) of displaying some chips ( lik ethe laptop cpus on the small pcbs), rather than heating it up and taking it off the board. |
acutually a good idea if it is done professionally and not hacked! |
I totally agree. It's good to keep the chips on a piece of board if they have been used (obviously not if they are new chips), but cutting the boards needs to be done properly. I have an AMD NG80386SX/SXL-25 that was cut off the board, and it was done so badly that about half 90% of the pins have been cut (all are still attached to the board, just not as well as before the cut). Only reason he got away with it was that I have no other AMD 386SX in any package...
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Wed Feb 08, 2006 1:28 pm Post subject: |
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| a bandsaw is the job.. but wear a mask and goggles.. and dont go cutting through any components if possible. |
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Mixeur
Joined: 06 Jan 2005
Posts: 4038
Location: Sochaux, France
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| Posted: Wed Feb 08, 2006 5:43 pm Post subject: |
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What I think : letting a cpu on a small piece of PCB sucks.
Most of time it is not clean, and it is definitely not the original environnement anymore...
But I think I'm the only one to think so...
For PQFP, hot air gun is very clean -> no bent pin, no solder remaining or just a little, not easy to see
For BGA -> nothing to do, nothing will be clean.
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