Quote:
Originally Posted by tobster1911
The stuff you show in the up close shot is flux. It will not cause any problems. If something was shorting there (the power plug) it would cause much bigger problems.
Checking the resistor should be easy. Write down the color bands and figure out what they should measure from this site. Resistor_Codes
Measure the diode by measuring the resistance across them. Then swap your probe tips and measure again. You should see an open one way and short (or close) the other. You don't need power to test this.
Last in case of a cold solder joint, take a solder iron and melt each solder connection and let re-cool.
Last would be a connection issue. That would be a mechanical engineers job.  |
Unfortunately, checking a diode or a resistor with an ohmmeter should be performed with the component removed from the circuit. If in the circuit, it's unknown if you're actually measuring the component or what's connected to the circuit loop.
Unless you have the manuf. circuit diagram or a lot smarter than most of us, you could wind up replacing all the parts one by one until you find the culprit. Most Pcar owners like to do this, starting with spark plugs, plug wires and distributor cap. Do you have that much time?
You could probably purchase a used working unit from ebay.
Sherwood