Desoldering Falcon NVRAM

Current solutions and designs.
mikro
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Re: Desoldering Falcon NVRAM

Post by mikro » Fri Sep 21, 2018 10:48 pm

tzok wrote:
Fri Sep 21, 2018 8:37 pm
Falcon 030: Alternate+Control+Right Shift+Undo
No need for Right Shift.
...during boot, before RAM test.
Totally OK also during RAM test.

pixelpusher
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Re: Desoldering Falcon NVRAM

Post by pixelpusher » Sun Jan 19, 2020 1:44 pm

exxos wrote:
Fri Sep 21, 2018 9:40 pm
My video was done to try and prevent damages to the boards as a lot of people are not good at this stuff. Sure more qualified people could do different methods.. but as many found, including myself, using a solder vacuum can easily damage pads, its why I avoided it in my video. Cutting pins and doing things one at a time means people will not start levering the NVRAM with a screwdriver, breaking the motherboard, ripping vias out etc when the NVRAM doesn't come out freely. I've fixed many boards due to such damages.

No objection if you want do a video, but have to think about who are not good at soldering, and how they will likely damaged everything, every step of the way. That is why I did the video, and the methods I did.
When opening my Falcon, it turned out the Dallas chip doesn't use a package with pins that could easily be reached (and cut):
Dallas.jpg
Dallas.jpg (229.94 KiB) Viewed 765 times
Any suggestion how to proceed here?

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Re: Desoldering Falcon NVRAM

Post by exxos » Sun Jan 19, 2020 1:48 pm

pixelpusher wrote:
Sun Jan 19, 2020 1:44 pm
When opening my Falcon, it turned out the Dallas chip doesn't use a package with pins that could easily be reached (and cut):
Any suggestion how to proceed here?
Cut the case off..
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PaulJ
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Re: Desoldering Falcon NVRAM

Post by PaulJ » Sun Jan 19, 2020 3:09 pm

@exxos , when I removed mine I believe it was one of the turfiest removals I've done. The ground pin was horrible. The ground plain must not have thermal relief. I'm guessing its just a hole in the huge ground plain that sucks off all the heat. Was a real pain. Great video which gives people a warning and howto deal with situation.

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Re: Desoldering Falcon NVRAM

Post by exxos » Sun Jan 19, 2020 3:19 pm

@PaulJ yeah the gnd pin takes a lot of heat. In some cases it took my gas iron and soldering iron to remove it.
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Re: Desoldering Falcon NVRAM

Post by PaulJ » Sun Jan 19, 2020 3:28 pm

exxos wrote:
Sun Jan 19, 2020 3:19 pm
@PaulJ yeah the gnd pin takes a lot of heat. In some cases it took my gas iron and soldering iron to remove it.
Yes, I had to borrow a board heater that sets under the board and brings board temp up close to solder melting and then use wick and an iron on top with more solder and flux. I really believe it was the worst extraction I've ever done.

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