Q: Is it possible to reflow the solder on the video chip?
I have the classic iBook G4 problem with a bad video chip connection at the logic board. I have read in some other forums about using a heat gun to re-flow the solder. It sounds very risky, but at this point, I feel I have nothing to loose. does anyone have experience with this procedure?
Thanks,
Randy
Thanks,
Randy
iMac G5, iBook G3 (firewire), Mac OS X (10.4.11)
Posted on May 30, 2010 8:31 AM
by spudnuty,Solvedanswer
Mac OS X
Randy,
Yes! Smoking gun!
I use a mini microscope that I bought here:
http://www.sciplus.com/category.cfm/subsection/21/category/195/start/1/maxrows/1 1/srch.fp/1
Didn't realize it was 45 X but it's my go to magnifier for really close up inspection.
Well hands actually but they look like this and they're made in China!:
http://www.amazon.com/Helping-Hands-with-Magnifying-Glass/dp/B000RB38X8/ref=sr111?ie=UTF8&s=hi&qid=1276000481&sr=1-11
Originally I was trying to retack pins 1 and 15 down to the board so soldering to that resistor is like working with a boulder.
This is about the limit of micro work I can do without some kind of micro positioning servo or such.
Good job in isolating the problem to U28.
Richard
Message was edited by: spudnuty
I pushed on U28 during startup and it booted normally.
Yes! Smoking gun!
Inspected pins 1 and 15 with a 10x loupe but really couldn't tell much
I use a mini microscope that I bought here:
http://www.sciplus.com/category.cfm/subsection/21/category/195/start/1/maxrows/1 1/srch.fp/1
Didn't realize it was 45 X but it's my go to magnifier for really close up inspection.
You must have nerves of steel!
Well hands actually but they look like this and they're made in China!:
http://www.amazon.com/Helping-Hands-with-Magnifying-Glass/dp/B000RB38X8/ref=sr111?ie=UTF8&s=hi&qid=1276000481&sr=1-11
The resistor at the pin #1 connection is so frigging small.
Originally I was trying to retack pins 1 and 15 down to the board so soldering to that resistor is like working with a boulder.
This is about the limit of micro work I can do without some kind of micro positioning servo or such.
Good job in isolating the problem to U28.
Richard
Message was edited by: spudnuty
Posted on Jun 8, 2010 5:51 AM