Today I discovered the Infinity Basslink all in one amp/subwoofer that was in my wife’s car was nonfunctional, after some further research the culprit is a couple of resistors that typically burn out on the circuit board.
You can find those resistors on Amazon for ~$6 here (yes in bulk quantity and you only really need 2)
While you only need 2, unless you have some of the exact 3.3K Ohm, 1/2 watt +/- 5% resistors laying around the cheapest option is to buy 100 of them on amazon.
I have ordered these, and already desoldered the old burned-out ones and tested them and verified they are no longer reading the right values. I will do a follow-up article and maybe a full write up once I receive the resistors in 2 days.
Also did a check buying the parts from Digikey, If you have other parts to order then it may be a better deal but they are about 6 cents a piece from Digikey and then you have to pay a minimum of $5 shipping or so, so it still works out to be cheaper/faster from amazon.
If you have no other need for that many resistors, as in no other electronics projects they could be used in you can pick up a 10 pack on amazon for $5.42 at the time of this post. But keep in mind, I chose the 100 pack as that puts the cost per resistor down to $0.06 the same as Digikey and that’s not counting shipping