Is there a "white button" under the battery cover (as described by reviewer Thakkar)? If so, what does it do if it doesn't switch polarity?
2013026
There is a button there however my glasses never worked properly. I would push the button and it would find the right signal. But after a while I would say about 10 to 20 seconds it would change on its own and made it virtually impossible to watch a movie in 3d. If you want my advice I would not purchase these classes as mine were a waste of money. The other glasses I purchased which resemble the Mitsubishi original glasses are excellent I own at least 10 to 15 Pair and they all work fine.
652719
Not sure about that as mine is negative ground. That said, it should be ground polarity insensitive by reversing the connections.
1076973
On the white plastic carrier that holds the batteries, on the side on it, there is a faint outline of an arrow. This arrow needs to point inward as u put it back in the light. As far as positive and negative, any device u put batteries in....u put the flat part of the battery on the spring
497295
I used AA battery in each of the three that I bought. All worked. Check the polarity. Positive in first. If that is correct, then I think you got a bad one.
2209443
Have had a problem with mine so checked batteries and reinstalled them. I noticed the directional arrow inside the battery pack was pointed the wrong way. The base of the battery, or negative end, should go against the spring. The arrows point to the opposite direction and it won't work this way. Now mine is working. I'm not sure yet if I have another problem not related to the batteries.
1127701
It has a reverse polarity prevention relay. If the battery being jumped is completely dead, it won't trip the relay to pass the current from the internal battery. It is a bad design
1834448
Mine is pretty stubborn so I assume you have the same problem. The easiest way for me to do it is to hold the unit in one hand and use the thumbnail of my other hand to pull against the two raised bars at the bottom of the battery cover in the direction of the arrows. Give that a try.
849797
If you look at the picture, you will see a small oval button which is an on/off switch...click on---click off...works great., and I have had no problems with the battery cover falling off.
1740039
It has a battery compartment on the side. Turn the dial and pull the cover off. It tells you which side positive and negative go.
1772118
Well if the batteries are fresh, and installed correctly (correct polarity), the problem must be the unit itself. The unit's microprocessor might have a problem.
2219628
Thanks, i'll check for the switch on the back tonight. i'm sure the polarity is correct, red to lead (+) and black to ground (-) right?
2081590
Almost all, if not all button batteries are stamped with their brand name, type I.D. and a positive symbol on only one face of the button battery cell. Since the opposite, rear, or unmarked face of the battery is always the opposite polarity to the marked polarity, and considering the marked polarity is always positive (+), the opposite face will be negative and thus no negative (-) mark or stamp is required. With button batteries their proper installation into a product, e.g. a watch or calculator, is normally assured by their physical stepped edge design which dictates in what orientation they must be installed, i.e. which face should face into the device. Normally this would be the unmarked face. The marked face you will normally see after the battery is locked into place. If the battery's power is exhausted and it is properly installed, then the device it is to power won't work. Normally putting in a fresh battery in its correct orientation will get the device working again. If that doesn't fix the device, the device is either defunct or you may have installed yet another exhausted or dead battery. A voltmeter is really the only practical testing tool that can tell you if a button battery is exhausted, that is to say dead.
1037574
Only thought I have is that you have the polarity reversed on the battery leads. If the leads are correct, the controller is faulty.
759088
The manual basically reads: Wires that your attaching to the battery are crossed (AKA polarity)
2151015
i did same thing at first, & was sure I installed battery right. In frustration, I flipped battery opposite direction inside flashlight & it worked fine. It stil seems backwards to me, but I LOVE, LOVE, LOVE this flashlight! If yours still won't work after installing battery in all directions, then it must be a defect. Hope it works for you. It's the best flashlight I've used!
1838260
This may seem like a stupid question, but did you install the batteries? Some electronic devices require a full 1.5 volts, so if you used Heavy Duty batteries you may have to switch to Alkaline. Also I would double-check the polarity. Most manufacturers test units at their factory before shipping, so I would be surprised if it is defective, but if above suggestings do not work, then maybe so.
1000764
the controller prevents reverse polarity. remove the diode it does not do anything