Apologies to all for the cat-cursing at around 0245 hours today,
b*cat was very frustrated.
An
ECI B-FOCuS modem was upended.
It's rubber feet were removed.
The four screws, so exposed, were undone.
The case was opened.
The PCB was removed and placed on a firm insulating surface.
The PSU was attached and the modem was powered up.
Application of meter probes to the four pads at location
JP1 showed with negative probe on pad #2 from the left, 3.28 VDC on pads #1, #3 & #5.
Confirmed #2 is GND, #3 is VCC, #1 & #5 are TXD & RXD.
A block of five 90 degree header pins had leads attached.
Jake (
the peg) was encouraged to hold the block of header pins against the solder infested pads.
The cat cursing started.
No matter how things were tried, no continuity could be obtained from the PCB solder pads to the ends of the fly-leads.
Tiny dimples were gently made in the solder infesting the pads.
The cat-cursing got louder.
Offering up the header pins into the dimples was finally achieved.
Still no continuity.
The cat-cursing reached fortissimo!
The soldering-iron was considered . . . and rejected.
b*cat's paws are now too fumbly and the vision is not good enough for such micro-surgery.
Fifty years ago and things were considerably different . . .
I'll just have to wait for the software unlocking method to be resolved.
And now I've just seen the time. Well overdue some