FLASHLIGHT FLICKERING, HELP

I just received the Ultrafire Alpha C-1 Item DX SKU: 2672. It flickers. I took it apart and clear it with alcohol, then it would stop... but when I hold it and move around, it flicker again. How can I fix this issue. Thank you.

-E

Might have to do the paperclip fix.

how? please assist. Please be detail... I not that techy.

Tighten up the loose switch in the tail, two holes opposite each other, turn.

i am sorry, i don't get it... tighten the loose switch??? it's tight already, it wasn't loose.... so sorry for not understanding your post.

abvidledUK said:

Tighten up the loose switch in the tail, two holes opposite each other, turn.

Click to expand...

I tighten it already... after cleaning it with alcohol, i tighten it hard.

A common problem with the Ultrafire lights is they the body conducts the current between the tailcap and head/driver, and the ends of the body tube are free from anodizing to do this. However, fairly often, not everything is long enough, or either the driver or tailcap assembly is screwed in too far and the body cannot make contact on the ends. If you see either the head or tailcap screwed in so far as there is no space between it and the body, that contact may be a little shy. You can bend a paperclip into a circle, and place it between the body and end to fill the gap.

Edit:
The tailswitch assembly is actually screwed inside the tailcap. The tailswitch assembly can sometimes be tightened into the tailcap further by using the two indentions you see inside the tailcap next to the spring.

Hi is everything tight, head, battery tube,is the battery loose inside,is the light engine loose inside.because it seems current is getting disconected when you move the light around.

TITAN1833 said:

Hi is everything tight, head, battery tube,is the battery loose inside,is the light engine loose inside.because it seems current is getting disconected when you move the light around.

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I tighten everything. I even pull the springs out a little just in case it didn't connect. I am using the 18650 battery. It don't rattle until I shake it hard like crazy.

it flickers and then I turn it off and then back on, it stop. then flickers again..cycle continues

dealgrabber2002 said:

I just received the Ultrafire Alpha C-1 Item DX SKU: 2672. It flickers. I took it apart and clear it with alcohol, then it would stop... but when I hold it and move around, it flicker again. How can I fix this issue. Thank you.

-E

Click to expand...

Simple...send it back.

"Just received"

abvidledUK said:

Simple...send it back.

"Just received"

Click to expand...

I did ask for a RMA from DX (still waiting for response)... I was thinking it could be something minor that I can fix instead of waiting another 2-3 weeks for the replacement.

Upon looking more closely at the pictures online, you probably need the paperclip fix on the tailcap, as the head is not a printed circuit board. Or tighten the switch inside the tailcap.



See the two indentions in the shiny part of the aluminum on either side of the spring? those are spots you can grip with plyers and tighten the switch into the tailcap more, or place a round paperclip around the outside over this shiny area.

so just make a round paperclip and drop it over the aluminum/indention to fill the gap? Is that what you mean marduke?

Try tightening using the two holes first. Righy tighty, lefty loosey

i'll try tighten it tomorrow at work, the plier is at work. for paperclip, use the thick one or the small skinny one?

Depends on the light and the gap. Start with a small one. But you still need plyers to form it into a perfect circle and trim the ends to match up to be the correct size.

then just drop it on top of the aluminum where the 2 indentions are?

Yep

last question buddy, its it possible to put it under the aluminum then tighten it so it wont fall out when changing battery?