Why is my McluxIII-PD so DIM/Cannot hold constant brightness???

[cryhavok]

Hello,

I've happily owned my McluxIII PD for about 2 months now, but it seems there is a problem with it...

I'm still using the original Titanium cr123 primary that came with the light, but there seems to be no regulation at all! I set it up 1 meter in front of my light meter, and it originally registers ~940 lux. A pretty far cry from what some others are getting (~1380lux).

I've been watching it for about 10 minutes now and it's continually dropped, now at 580 lux. The light feels a little warm to the touch.


Trying to help every bit of light get out, I've replaced the sapphire lense with a UCL one.


P.S. in the time it took to type this post, it's down to 400!. Even though this is not a new battery, shouldn't there still be regulation? I know mine was built when there was some problems with the converter boards, so maybe mine is defective??

 

[PoliceScannerMan]

Have you tried a new battery? I would try this first...

Good luck.

 

[Trashman]

With all regulators, a constant or somewhat constant brightness is held until the voltage drops below a certain level. Also, it often happens that even though the light is still in regulation, the brightness will lessen as the voltage drops.

My best guess says that a new battery will show you "new" brightness.

 

[cryhavok]

dropped down to ~200 so I switched the battery and it seems to hold a pretty steady ~1440 lux...seems that the titanium cell was pretty depleted. Funny because I haven't even used it that much, but oh well

 

[PoliceScannerMan]

dropped down to ~200 so I switched the battery and it seems to hold a pretty steady ~1440 lux...seems that the titanium cell was pretty depleted. Funny because I haven't even used it that much, but oh well

Good, I'm gad you got it working, you should head over to lighthound.com for some rechargable 123's or to the dealers forum and check out AW's battery sales thread....

 

[s.duff]

Good, I'm gad you got it working, you should head over to lighthound.com for some rechargable 123's or to the dealers forum and check out AW's battery sales thread....

the pd will function properly with r123s? i was afraid that they would be too much juice like a certain xbin hd45 that belongs to a forum member

 

[PoliceScannerMan]

the pd will function properly with r123s? i was afraid that they would be too much juice like a certain xbin hd45 that belongs to a forum member

Since the PD is 1 x 123 I promise you it is OK. I have been running R123's in my PD since the day I got all 3 of them. I think the converter in the PD can handle up to 5.2V, where a R123 is about 3.7V.

 

[Lips]

I had a bad battery once and it dimmed.

 

[Blindspot]

I'm not trying to be a jerk or anything - I have made similar, uh....mistakes - but it totally cracked me up to read this thread -

Help, my super exclusive, expensive flashlight is getting dimmer...oh, the battery...uh...nevermind! :devil: :sigh: :shakehead

 

[Kiessling]

I once had this happening with a light on fresh batteries ... the output dropped quickly over time ... and eventually the emitter melted oo:

Great thread indeed :wave: