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multi- layer PCB repair

I want to know that what type of instruments and equipments are used in
repairing microprocessor/microcontroller/VLSI based multi-layer PCB.
Please also let me know any other information and tips regarding
multi-layer PCB repair.

Thanks in advance
Regards
Sadia
 
T

tjs

Jan 1, 1970
0
Multi layer boards are not repairable if the problem is on an internal layer.
"IF" there is a fix, you will spend more finding the fix, and making the fix
than a new board would cost. Single and double sided boards are nice to work on,
and a technician can actually fix the circuitry on one. Even with the most
exotic soldering station etc a bad multi layer board is trash.
 
J

James Sweet

Jan 1, 1970
0
tjs said:
Multi layer boards are not repairable if the problem is on an internal layer.
"IF" there is a fix, you will spend more finding the fix, and making the fix
than a new board would cost. Single and double sided boards are nice to work on,
and a technician can actually fix the circuitry on one. Even with the most
exotic soldering station etc a bad multi layer board is trash.


Unless it's a very simple problem, in which case you can often jumper from
one spot to another with a piece of wire wrap wire, of course finding that
problem can be a real pain.
 
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