Fine pitch trace repair
On Monday, December 3, 2018 at 5:53:55 PM UTC-8, bitrex wrote:
Due to an unfortuante jab with the head of a screwdriver it looks like I
have at least one, possibly two broken traces on this GPU card, on the
traces running between the processor and VRAM. Result is corrupted
display output/won't switch into high-resolution modes. The ram is BGA
and the GPU likewise and under a small heat-sink so hard to test
continuity, plus the trace width is very small, looks like perhaps 4 mil:
https://www.dropbox.com/s/ig9h3vjze5omlie/2018-12-3%2018-11-20.jpg?dl=0
Palette inverted:
https://www.dropbox.com/s/m05pikt3yexq2f6/2018-12-3%2018-11-30.jpg?dl=0
Any suggestions for mending a break on a trace like this?
1 strand of the wire in a computer cable (RS-232, parallel printer) is small enough for a repair like that. Clean and tin the traces and tack the splint on top. A flux pen can be helpful. I've donee these reapirs on 8 mil traces afer acid samage from leaking 'lytics.
G²
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