Trials & Tribulations of Chip Repairs & Upgrades
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Does anyone recognise an old-school SP12??
Surprisingly, this one decided to chomp up it's #1 ferrite bead ....... I wonder if this recent rash of them has anything to do with C-19??
![Passive circuit component Circuit component Light Hardware programmer Electronic engineering]()
Surprisingly, this one decided to chomp up it's #1 ferrite bead ....... I wonder if this recent rash of them has anything to do with C-19??
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A couple more to peruse ....
![Passive circuit component Circuit component Green Hardware programmer Resistor]()
This is an odd one because the arrowed left leg, is not attached to the solder pad in any way. One can presume that the component was running hot and the car took a hit which resulted in the re-orientation and, hence, the detachment ....
![Passive circuit component Circuit component Hardware programmer Microcontroller Electronic engineering]()
This one is also somewhat strange in that there does not appear to be anything other sign of damage other than the complete absence of the moulded part ....
Both of these chips exhibit damage that, in all probability, is caused by excessive heat. My suspicion is that the motor(s) requires investigating ....
This is an odd one because the arrowed left leg, is not attached to the solder pad in any way. One can presume that the component was running hot and the car took a hit which resulted in the re-orientation and, hence, the detachment ....
This one is also somewhat strange in that there does not appear to be anything other sign of damage other than the complete absence of the moulded part ....
Both of these chips exhibit damage that, in all probability, is caused by excessive heat. My suspicion is that the motor(s) requires investigating ....
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My favourite chip ....... the C7006 retrofit for a Saloon car ...
![smile.png]()
![Passive circuit component Circuit component Green Hardware programmer Microcontroller]()
This is one of the original Rev E C7006s, you can tell because is it fitted with the full compliment of resistors R1-R4; the build quality is beyond compare. The darkened areas around it do not forebode well so I expect to find more damage, particularly to the copper tracks underneath ....
![Passive circuit component Circuit component Resistor Hardware programmer Microcontroller]()
There are two areas of concern. The uppermost red line indicate an incomplete track and the lower one show more missing track and the absence of the pad for attaching the foot of the FET.
These defects can be fixed by using my finest soldering iron tip at just 0.2mm - more to follow ...
This is one of the original Rev E C7006s, you can tell because is it fitted with the full compliment of resistors R1-R4; the build quality is beyond compare. The darkened areas around it do not forebode well so I expect to find more damage, particularly to the copper tracks underneath ....
There are two areas of concern. The uppermost red line indicate an incomplete track and the lower one show more missing track and the absence of the pad for attaching the foot of the FET.
These defects can be fixed by using my finest soldering iron tip at just 0.2mm - more to follow ...
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This chip had previously been repaired with uprated diodes. It didn't last long before it came back to me ..... 
Upon examination under microscope I checked my previous work and all was well. When I flipped it over the problem was clear ......
![Circuit component Passive circuit component Hardware programmer Electronic component Electronic engineering]()
The onboard ferrite bead marked as FB2 has undergone a metamorphosis. This component is one of the last things in the circuit that leads to the motor which just happened to be an FF50.
Upon examination under microscope I checked my previous work and all was well. When I flipped it over the problem was clear ......
The onboard ferrite bead marked as FB2 has undergone a metamorphosis. This component is one of the last things in the circuit that leads to the motor which just happened to be an FF50.
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