XinTD V4 SC-82 Issues

4 posts / 0 new
Last post
Last seen: 2 months 3 weeks ago
Joined: 03/05/2013 - 13:16
Posts: 101
XinTD V4 SC-82 Issues

Hi all. The XinTD threads on BLF all seem too old to bother posting on ( ie. ) so I’m posting this problem as a new topic.

I’m pretty fond of this light, and it has served me well over the past 8 yrs. Recently though, moonlight mode has been flickering or lost altogether. The other three modes are fine. Contacts have been cleaned and everything seems properly tight. Tried two different, fully-charged 18650s. Any thoughts as to why this would happen only in lowest mode?


Edited by: dusty99 on 07/01/2021 - 17:05
dthrckt's picture
Last seen: 10 hours 46 min ago
Joined: 11/08/2011 - 10:11
Posts: 4603
Location: Upstate NY

If you use it without tailcap by putting a conductor between battery and tube it might help you tell if its the switch. That’s my guess since it is the moving part.

Lightbringer's picture
Last seen: 2 hours 3 min ago
Joined: 08/30/2016 - 14:12
Posts: 15566
Location: nyc

Oldie, so I’m guessing moon is via strobing the 7135s, eh?

At too low a duty-cycle, a lot of 7135s are iffy. If you got Crappy Sailboat 7135s, you can probably swap ‘em for Raptor Claw ones instead for better low-DC levels.

If flashable, just bump up the minimum level a notch or two.

Had no idea 7135s could “go bad” over time, but you never know. Could be too much capacitance on the common lead that turns on the 7135s. Ironically, a 7135×4 would likely not “flicker” as bad as a 7135×8.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

Bort's picture
Last seen: 10 hours 47 min ago
Joined: 06/01/2012 - 17:15
Posts: 8147
Location: Holding the proverbial flashlight

LED got overheated and doesn’t like low current anymore?
8 years is enough to consider a replacement.

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"