Help! 2 wheels better than 4, when its not raining.

bob d

Finding my (electric) wheels
Oct 14, 2023
22
0
Ah, I can see the reason for your comments. The 3 spiders legs are actually very fine scratches in the surface of the PC. And what might look like a solder blob is actually more like a shallow crater burned into the surface of the PCB. I'll take some more photos tomorrow and forward them on.
Thanks again

bobd
 

thelarkbox

Esteemed Pedelecer
Aug 23, 2023
1,252
385
oxon
I see the crater now r 21 looks like it got a lil warm but the 113 on it tells us its 11000 or 11 kohm, so you can test that, above it T2 is the leg of the resistor and above that the crater and the unpopulated double box for R16, and to the right what i assume is the new 5v ldo which looks like it could use a bit more solder or a reflow on the ground pin..

that crater ?? if R16 wasnt populated its feed tracks wouldnt have blown so what did?
 

bob d

Finding my (electric) wheels
Oct 14, 2023
22
0
Ah well, the original resistor wasnt positioned as I have positioned the new one. It was set at about 45 degrees sloping up from the PCB. The end of the original resistor was almost if not touching the PCB where the crater/burned area is.
I've added another picture.
Many thanks

bobd
 

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