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Title: Reflow 5970 Post by: YipYip on March 15, 2013, 04:57:07 AM Have been building LTC rigs for the past 3 months now and after my 3rd dead 5970 I am at the point where reflowing seems like the way
Usually get a dead GPU and sometimes missing FansSpeeds & Temps in cgminer Is this a candidate for reflowing ? What are the directions to reflow a 5970 I have heard from 8 min to 30 min 160 degrees C What parts remove ? What temp ? What process ? i.e on a cookie tray with coatings of egg and milk etc :D How long ? Will it last 3 months or is it ebay time ? Title: Re: Reflow 5970 Post by: KWH on March 15, 2013, 05:16:59 AM Have been building LTC rigs for the past 3 months now and after my 3rd dead 5970 I am at the point where reflowing seems like the way Usually get a dead GPU and sometimes missing FansSpeeds & Temps in cgminer Is this a candidate for reflowing ? What are the directions to reflow a 5970 I have heard from 8 min to 30 min 160 degrees C What parts remove ? What temp ? What process ? i.e on a cookie tray with coatings of egg and milk etc :D How long ? Will it last 3 months or is it ebay time ? I just tried a 5850, didn't help. www.zcorp.com/en/Products/3D-Printers/ZPrinter-650/spage.aspx Title: Re: Reflow 5970 Post by: Tesla71 on March 15, 2013, 06:13:30 AM Hi I did the same with an 5970, 1 GPU was not working. Its working again now, will see for how long..
I used 160 deg C for 30 min after I removed the cooler, so that is only the layer wirth the ports. Title: Re: Reflow 5970 Post by: Gator-hex on March 15, 2013, 12:04:20 PM Need to to get them reballed for a perma-fix,
DIY Baking: http://www.youtube.com/watch?v=SCxc0bxk_1U DIY Reflow: http://www.youtube.com/watch?v=tjWXExWM4RU Pro Reflow: http://www.youtube.com/watch?v=_dOJDRTXaQw Pro Reballing: http://www.youtube.com/watch?v=XKZMsIlOFwY baking/reflow lasts about 3 months in my experience. I just put them on ebay as spares & repairs and lets someone else have the I never buy a "refurbished" GPU off ebay. ;) Title: Re: Reflow 5970 Post by: Cablez on March 15, 2013, 12:52:12 PM I never buy a "refurbished" GPU off ebay. ;) That reballing video was really neat. Makes you want your own hot air rework station. Title: Re: Reflow 5970 Post by: Gator-hex on March 15, 2013, 02:57:54 PM Quote That reballing video was really neat. The video didn't show how they get the balls back on though, they just have a little pot of solder balls and roll them on. Anyone who has this done should ask for the best grade solder balls with a higher melt point. (you don't want more of that EU lead free rubbish that goes brittle after 90c) ;) Title: Re: Reflow 5970 Post by: ocminer on March 15, 2013, 05:35:30 PM In my experience 160 degrees (celsius) is much too low, I use 200 - 220 degrees for 20 minutes (without pre heating)..
some cards are running > 6 months now with this method.. but from 10 it only works with 4-5 Title: Re: Reflow 5970 Post by: YipYip on March 17, 2013, 10:41:46 PM In my experience 160 degrees (celsius) is much too low, I use 200 - 220 degrees for 20 minutes (without pre heating).. some cards are running > 6 months now with this method.. but from 10 it only works with 4-5 When i was disasemling it I saw that somebody had already ...Somebody had reflowed it when they sold it too me Anyway it ended up in worse shape and is now on ebay for parts Moral of story dont try and reflow a card twice or Dont whip a dead horse Also second moral of the story 5970's not worth the hassle for Litecoin mining So far have bought 6 and only 3 have worked :( Title: Re: Reflow 5970 Post by: vdragon on March 18, 2013, 12:42:41 AM Well 5970 have mostly been used and abused... Unless you know someone who bought it for gaming, its not worth it
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