Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc.
Be sure to check for any corrosion on the pcb etc as well. If there is corrosion, gently clean it off using IPA 90%+ (Isopropyl Alcohol - available at most pharmacies)
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connections are clean and bright.
-
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
+
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed from the headlamp) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc.
-
Also check for any corrosion. If there is corrosion, clean it off using IPA 90%+ (Isopropyl Alcohol - available at most pharmacies)
+
+
Be sure to check for any corrosion on the pcb etc as well. If there is corrosion, gently clean it off using IPA 90%+ (Isopropyl Alcohol - available at most pharmacies)
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connections are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc. Also check for any corrosion. If there is corrosion, clean it off using IPA 90%+ (Isopropyl Alcohol - available at most pharmacies)
+
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc.
+
Also check for any corrosion. If there is corrosion, clean it off using IPA 90%+ (Isopropyl Alcohol - available at most pharmacies)
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connections are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc. and also if there is any corrosion evident. If there is corrosion clean using a QTip and IPA90%+ (Isopropyl Alcohol - available at most pharmacies).
+
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc. Also check for any corrosion. If there is corrosion, clean it off using IPA 90%+ (Isopropyl Alcohol - available at most pharmacies)
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connections are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc..
+
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc. and also if there is any corrosion evident. If there is corrosion clean using a QTip and IPA90%+ (Isopropyl Alcohol - available at most pharmacies).
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connections are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc..
-
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connection are clean and bright.
+
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connections are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc..
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connection are clean and bright.
-
If nothing is evident and it is still malfunctioning after being re-assembled, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
+
If nothing is evident and it is still malfunctioning after being re-assembled enough to test if it works, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc..
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connection are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.
Hi,
Here is a link to the ifixit [guide|19494] guide.
Once you have stripped it down, inspect it for obvious problems such as dry joint, loose or broken connections on the pcb, switch, battery compartment etc..
Also ensure that the battery compartment spring terminal tensioners exert enough pressure on the battery terminal for a good connection and that they and the other end terminal connection are clean and bright.
If nothing is evident and it is still malfunctioning after being re-assembled, use a Voltmeter (or Ohmmeter - with the batteries removed) to see if the problem can be tracked down to a particular area.