Big problem with Fenix TK11 HELP PLEASE

Hello guys,

And there it is a second problem with my Fenix TK11 i cant change the output mode of the light anymore..... Its all the time in low mode,... When i push it on, he start i think for 0.1 second in high and ten he flows in 0.1 second to low mode.. What is the problem, you think?

very thanks

Could it be that the batteries are too low?

I have a déjà-vu here...

There's already a thrad from another poor guy with a TK11 with the same problem.

I'm gonna try if my TK10 still works as it should!

1203 said:

Could it be that the batteries are too low?

Click to expand...

That would be my guess

I did have the same effect with mine when trying to use it with 3.7v rechargeables (16340).
Checked around and found in the following thread that supported voltage is only up to 6v:

https://www.candlepowerforums.com/threads/201375


In fact, it works well with 18650 (3.7v) and 2 x CR123 (6.0v) or 2 x 16340 3v (6.0v) rechargeables, but NOT with 2 x 16340 3.7v (7.4v)!

So maybe you're using 2 x 16340 3.7v?

MiniLux

P.S:
http://www.light-reviews.com/fenix_tk11/
just wondering how Mev can have done even runtime tests with the TK11 on "2x 16340 750mAh AW Protected" as AFAIK these do have 3.7v:
http://www.cpfmarketplace.com/mp/showthread.php?t=144427

Maybe there are different batches of the light...?

Hendrikjansen said:

Hello guys,

And there it is a second problem with my Fenix TK11 i cant change the output mode of the light anymore..... Its all the time in low mode,... When i push it on, he start i think for 0.1 second in high and ten he flows in 0.1 second to low mode.. What is the problem, you think?

very thanks

Click to expand...

It does indeed sound like the batteries are drained.

What batteries are you using?

CR1234 Bats, but when the bats are low the torch must give a 'low light indication' right?

Hendrikjansen said:

CR1234 Bats, but when the bats are low the torch must give a 'low light indication' right?

Click to expand...

Yeah, the high mode stops working....

What are the cell voltages? What about fresh cells?

Clean off the top of the battery tube and the high mode contact ring.

After that it's the battery.. If not it's a shipping date to 7777's land.

I had the same problem a couple weeks ago. Tried everything to fix it but could only get the low mode to work. Finally gave up and sent it back for a new one. Great warranty policy. Thanks Fenix

MiniLux said:

I did have the same effect with mine when trying to use it with 3.7v rechargeables (16340).
Checked around and found in the following thread that supported voltage is only up to 6v:

https://www.candlepowerforums.com/threads/201375

Click to expand...

I've seen somewhere an official information from fenix that TK11 supports 2x3.7V RCR123 batteries. I use them in mine without any problems.

Hendrikjansen said:

CR1234 Bats, but when the bats are low the torch must give a 'low light indication' right?

Click to expand...

TK11 doesn't have low battery warning. Just get some fresh batteries and it should work fine.

the TK11 low flashes when the battery's are low.. Mine BNIB TK11 is doing the same as the OP.. No high output mode, only low with brand new battery's..