| First of all, those are not cracks. Those are lines that have formed from the shrinkage of the conformal coating and the green colored protective coating placed on the copper trace material. When it shrinks like that it looks like cracks but it's really just lines that form from the seperation. The round solder joint to the left of the G in 'GND' is breaking down badly. That as well as other solder joints I see need to have the old deteriorating solder removed and resoldered with new solder. The round solder joint directly below the N in 'GND' is a part of the ground trace as can be seen in this picture. It needs to be connected to ground as PiotrC70 was asking. The blackness is corrosion and needs to be removed from the trace to keep it from spreading. If surface cleaning is not enough to get rid of it then that portion of the trace needs to be removed and jumpers to both the solder joints in question need to be jumped to ground (which is the square points connected to where the screw is installed). The two pins above c7 are NOT ground points. And the right side of c7 is NOT connected to the solder point below the N in gnd. The area inside of the yellow is ground. The area inside of the red is not ground.
 www.mytwinturbo.com Nissan Data Voice - The first Nissan diagnostic software with a voice! Download my Nissan 300ZX Vin/Model Lookup. Watch an ECZA meet caravan! |
