I do have a multimeter but am not sure how to use it and what I'd even be looking for. I can figure it out though. I would touch each of the multimeter ends to the top and underside solder? What results should I be looking for? What is that longer black-wrapped tube on the underside of the circuit board?
Most low cost multimeters cannot measure capacitance, but some can, such as
THIS $20 one.
If yours do not have that feature, then you can only check for shorts and opened conditions. Shorts are obviously easy to check, whereas open is a little tricky especially for small capacitance such as the yellow one that can be fully charged by the meter's internal battery momentarily, making it hard to observe the pointer movement (analog) or read the value (digital).
If you put the multimeter selector on continuity check, use the highest range such as X100 or X1000. Make sure the capacitor is fully discharges, then as soon as you put the probes across it, you should see the need move back a little and then go back to infinity. If it does not move at all, not even a touch, then it is "open".
For digital multimeter, you should see the reading rapidly changing for a split second before settling down to show infinity of hundreds of mega ohms. It it shows infinity or high mega ohm value right away, then the capacitor is probably blow opened.
No idea what that black tube is, I actually did not see it until you mentioned it. It is likely a resistor. The picture is not very clear at all and is partially blocked by the file name. It makes more sense to have some parts at the bottom as I was wondering why there are only 5 parts. Andrew Jones may be good but not a magician.
