Question about Dewalt DW908 18-Volt NiCd Pivoting Head Cordless Flashlight

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Flashlight will not work?

Dropped flashlight, does not work, battery is good, bulb is good, their seams to be voltage to bulb socket springs i believe that the ground wire at the spring mat have moved? is their a diagram that shows wiring?

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Oil light and neutral light not working when the ignition is switched on


Hi, Michael if you have a dash or instrument light that is out and you have confirmed that the bulb is good then you need to do some quick diagnostics all you need is a test light and a wiring diagram usually found in the back of your service or owners manual.
1. Make sure your battery is fully charged with "CLEAN" and "TIGHT" connections and the instrument light fuse is not blown.
2. Inspect the bulb socket for corrosion and clean as necessary, a spray can of electrical contact cleaner and compressed air works the best.
3. Confirm your test light is working properly by connecting one end to the battery negative post and touching battery positive post with the sharp probe, the test light should illuminate.
4. With the ignition turned on confirm you have power to the bulb socket by connecting your test light to battery negative or ground and probe the center contact, the test light should illuminate if not you need to check the integrity of the switch or sending unit the light represents, if that is ok then you have a short in the wiring between the component and the light bulb, if all is ok proceed to the next step.
5. Confirm you have a good ground to the light bulb socket by connecting the test light to battery positive and probe any metal part of the socket housing, the test light should illuminate, if not you need to find the short and repair as necessary.
6. Inspect the integrity of the spring loaded positive contact insulation tab by pushing against it with your test light to see if it goes down and springs back fully to it's operating position again contact cleaner and compressed air works best to restore proper function.
7. If your bike has a lot of mileage the vibration can cause bulbs to become loose in the socket by wearing down the soldered contact thus loosing spring pressure from the tab and eventually stop making contact this can be fixed by replacing the bulb or putting a drop of solder on the worn out end to ensure contact.
8. If all of your dash lights are out but are good then you most likely have a faulty connection to the dash wiring harness, inspect the connector for corroded, broken, or loose pins/sockets.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.

Nov 15, 2016 | Motorcycles

1 Answer

My flashlight just stopped working. when placed on charger, the green charged light appears. How do I know if its a battery or bulb problem?


it's telling you the battery is fully charged so suspect that either the battery is dead or the bulb is burnt out. Get a test meter and test for voltage at the battery. If yes, then the bulb is burnt. If no voltage then obviously the battery is bad

Dec 28, 2013 | Inova T4 Flashlight

1 Answer

Self not working


Hi, Anonymous if you have a dash or instrument light that is out and you have confirmed that the bulb is good then you need to do some quick diagnostics all you need is a test light and a wiring diagram usually found in the back of your service or owners manual.
1. Make sure your battery is fully charged with "CLEAN" and "TIGHT" connections and the instrument light fuse is not blown.
2. Inspect the bulb socket for corrosion and clean as necessary, a spray can of electrical contact cleaner and compressed air works the best.
3. Confirm your test light is working properly by connecting one end to the battery negative post and touching battery positive post with the sharp probe, the test light should illuminate.
4. With the ignition turned on confirm you have power to the bulb socket by connecting your test light to battery negative or ground and probe the center contact, the test light should illuminate if not you need to check the integrity of the switch or sending unit the light represents, if that is ok then you have a short in the wiring between the component and the light bulb, if all is ok proceed to the next step.
5. Confirm you have a good ground to the light bulb socket by connecting the test light to battery positive and probe any metal part of the socket housing, the test light should illuminate, if not you need to find the short and repair as necessary.
6. Inspect the integrity of the spring loaded positive contact insulation tab by pushing against it with your test light to see if it goes down and springs back fully to it's operating position again contact cleaner and compressed air works best to restore proper function.
7. If your bike has a lot of mileage the vibration can cause bulbs to become loose in the socket by wearing down the soldered contact thus loosing spring pressure from the tab and eventually stop making contact this can be fixed by replacing the bulb or putting a drop of solder on the worn out end to ensure contact.
8. If all of your dash lights are out but are good then you most likely have a faulty connection to the dash wiring harness, inspect the connector for corroded, broken, or loose pins/sockets.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Yamaha FZ 16 Service Manual
OEM parts for Yamaha
Yamaha FZ16 User Manual pdf

Nov 25, 2012 | 2008 Yamaha FZ16

1 Answer

I have a 6-7 year old Rayovac Workhorse Lantern- I bought 2 new 6 volt batteries and 2 new tube bulbs for it but it still doesn't work. How and where should I take it to be checked?


The odds that both bulbs went out at the same time is pretty low, actually. It's more likely that there's corrosion in the on-off switch or that an internal wire may have come loose. It's also possible--and I've made this mistake myself--that one of the 6-volt batteries has been put in backwards so that the polarity is not properly aligned for both batteries.

With all that said, here are a few simple tests you can do.

1. Check the batteries. If you have a battery tester, are both batteries good? If so, check they are properly installed and making good contact with their terminals.

2. Pull the bulbs out and use a voltmeter to check that you have voltage going to each bulb tube. This basically means switching the light on and touching each of the terminals where the bulb(s) would clip in. You should see a strong voltage reading on one or both tubes-I believe that this light is designed to keep working, even if one of the bulbs is burned out.

3. If you don't get a reading from the bulb terminals, the on-off switch or wiring leading to is is the prime suspect. You may have to disassemble the light housing to get into that, which may not be particularly easy. At this point, you might want to call Rayovac customer service and see what they might do for you under their alleged lifetime warranty for flashlights. You may be able to send it in (holding onto the bulbs for yourself) and get a free replacement.

Good luck!

Nov 21, 2012 | Camping, Backpacking & Hiking

1 Answer

Won't light with new batteries and bulb


look where the batteries go and make sure there is no crud or corrosion in the housing or on the spring in the end cap .if you remove the bulb and check the voltage using a multimeter ,if its under 3 volts you have a bad connection somewhere in the housing.

Nov 28, 2010 | MagLite Mag LiteĀ® 2x 'd' Battery ...

1 Answer

Mag-lite does not work i have tried new batteries and new bulb and cleaning the spring in the rear.The switch appears to be operating correctly,but has not been checked


If your flashlight is like mine...

The switch closes the circuit to the bulb, so there is a wire, or metal conductor running from the switch to the bulb holder. If your switch is mechanical, it will push a metal lever forward ... bend lever this so it contacts the bulb holder better. If your switch has a wire, the wire is soldered to the bulb holder, but the switch may be bad

There is a second wire or metal conductor running to the back of the flashlight. This conductor has to make good connection to the metal spring. Stretch out the metal spring, and see if it rotates a bit so it makes better contact with the conductor coming from bulb.

There is a third point. This is where the front of the battery touches. If batteries touch the bulb, then the problem is the metal spring in the back or the mechanical switch lever. If your batteries touch a copper spring, see if you can clean this spring and pull it out a bit.

Oct 17, 2010 | MagLite Mag-Lite& Flashlight

1 Answer

How do you replace the bulb on a Coleman PML8020 Flashlight


If there are little pegs on the sides you have to push the bulb it and turn (usually turn left)

Jan 05, 2010 | Camping, Backpacking & Hiking

1 Answer

Blackhawk Legacy X9-P Won't work replaced old batteries nothing


If you have an ohm meter, you can check the bulb to see if the bulb has burned out. It is possible that the bulb has failed.

Another thing to check is inside the tube of the flashlight to make sure that you are getting a good, clean contact at the top end of the tube and at the bottom, normally where the spring makes contact with the bottom of the battery. Sometimes the contact become corroded or coated with a slight "glaze" which prevents power flow through the flashlight. Gie them a good going over and wipe off any residue that might be there.

The last thing to check is the switch itself, although not know to fail very often, they sometimes do due to being subjected to rough handling or a good jolt from being dropped, etc. Just follow the path of checking everything in the chain and you should be able to get the light working again.

Jul 10, 2009 | Blackhawk Legacy X6 6V Xenon CR123A Blk

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