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crazybubba64
Joined: 03 Jul 2018
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Location: WI, USA
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 Posted: Sat Aug 17, 2019 10:59 am Post subject: 3x disappointment |
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CHips
Joined: 01 May 2016
Posts: 834
Location: Switzerland
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| Posted: Sat Aug 17, 2019 11:19 am Post subject: |
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2 pretty Early (presumably) SX835... There is reason to be pretty mad indeed :p
The era where thermal paste was not yet invented...
You might use some Chinese service to repaint them Lol
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CPUShack
Joined: 16 Jun 2003
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Location: State of Jefferson, USA
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crazybubba64
Joined: 03 Jul 2018
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Location: WI, USA
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| Posted: Sat Aug 17, 2019 12:46 pm Post subject: |
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| CPUShack wrote: | 90% of the time thats the result LOL
sometimes heating them a lot helps |
I used a heatgun to get the heatsinks off. 
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CPUShack
Joined: 16 Jun 2003
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crazybubba64
Joined: 03 Jul 2018
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Location: WI, USA
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| Posted: Sat Aug 17, 2019 1:12 pm Post subject: |
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| CPUShack wrote: | ahh yah its just annoying
but better then the grey stuff, that stuff is stronger then the ceramic and will tear the chip apart |
There is a SX753 in this lot that has the grey stuff...
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Marcin
Joined: 02 Jan 2005
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Location: Poland
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| Posted: Sat Aug 17, 2019 1:43 pm Post subject: |
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Ohhh that loss experienced almost every CPU collector when tried to remove heatsink from Pentium ;( I think you may try heating so long that heatsink will fall off without much prying.
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crazybubba64
Joined: 03 Jul 2018
Posts: 1371
Location: WI, USA
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| Posted: Sat Aug 17, 2019 2:32 pm Post subject: |
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| Marcin wrote: | | Ohhh that loss experienced almost every CPU collector when tried to remove heatsink from Pentium ;( I think you may try heating so long that heatsink will fall off without much prying. |
I think the pink-ish silicone stuff ends up acting like super putty and just pulls the ink/print right off, regardless of heating/cooling. I've seen this happen to a P90 that had a thermal pad instead of paste.
I'll probably be selling these on the forum regardless of damaged print. Simply means someone will get a better price. ¯\_(ツ)_/¯
Although if anyone knows how to get the evil grey stuff off, I'd really like to save that SX753...
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cvandijk
Joined: 21 Jul 2016
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Location: Netherlands
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| Posted: Sat Aug 17, 2019 2:42 pm Post subject: |
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| Soak it in Isopropyl alcohol, with a bit of luck it will soften the grey stuff and you can get it off without damage. |
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crazybubba64
Joined: 03 Jul 2018
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Location: WI, USA
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| Posted: Sat Aug 17, 2019 2:46 pm Post subject: |
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| cvandijk wrote: | | Soak it in Isopropyl alcohol, with a bit of luck it will soften the grey stuff and you can get it off without damage. |
I've been soaking it every 10-20 min or so, haven't completely submerged the thing. Definitely my next attempt.
One of the corners was chipped and a pin is missing, so this is more of a display piece than anything.
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Sat Aug 17, 2019 2:57 pm Post subject: |
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| As the last resort try DMSO. |
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Tue Aug 20, 2019 12:49 am Post subject: |
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| That's why the value of the perfect condition of SX753 have been increasing. Really hard to get the perfect one. |
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crazybubba64
Joined: 03 Jul 2018
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Location: WI, USA
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| Posted: Tue Aug 20, 2019 8:48 am Post subject: |
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I have been soaking the SX753 in alcohol for ~3 days now.
The grey stuff is a bit softer now. I've been chipping away at it with my fingernails (ow). This chip is already damaged due to the missing pin, but so far it looks like this method has kept the logo mostly intact and hasn't added too many significant scratches. I'll post pictures when I make significant progress.
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frag_
Joined: 17 Nov 2008
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Location: Estonia
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| Posted: Tue Aug 20, 2019 9:00 am Post subject: |
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| Another good candidate is 1,2-dichloroethane (ethylene dichloride), but it's quite toxic. |
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crazybubba64
Joined: 03 Jul 2018
Posts: 1371
Location: WI, USA
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| Posted: Thu Aug 29, 2019 10:27 pm Post subject: |
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Just an update to anyone who was curious: I managed to remove all of the evil grey stuff.
2 weeks of soaking in 70% alcohol and chiseling away at it with fingernails (again, ow) has resulted in it looking pretty good.
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