Tear Down: Xtar WP2 II -power supply unit

EDC Gear for Flashlight Carriers
1

Hi!

Since I got first failure ever on Xtar chargers, I decided to see, what happened.

The charger itself did not fail, it was the powersupply.

HKJ did a great review on USB Power supply's, I remembered this case because of that review.

Pics:

IMO the PCB looks pretty clean to me. Solderings are not the sloppiest I've seen.

I'm not sure about it, but that white stripe between green areas, is that the space between high and low volt sides?

Top side, cannot see what component has failed...

This component goes over high and low voltage sectors.

Maybe someone can identify, if it is a good or a bad one?

2

BTW:

that blue capacitor has labeling: CD222M

Datasheet is here

3

Exactly and it looks to be wide enough.

[quote=CheapThrills]

This component goes over high and low voltage sectors.

Maybe someone can identify, if it is a good or a bad one?

[/quote]

There is two components, the blue one is a capacitor and hopefully a Y safety capacitor (It probably has a lot of approval stamps on it).

The black one with 4 pins is a optocoupler used for feedback, i.e. stabilizing the voltage on the low volt side.

Generally the design looks safe enough.

4

The capacitor had X1, Y1 classification on datasheet.
Rated voltage: 250V and withstand voltage 4KV.

5

I have gifted my xtar charger to my brother but without the stock charger because it was us plug and i wasn’t sure if it is well build.
But when i played around with one of these 10W 12V LEDs I used the original power supply in my desklamp prototyp. I opened it up and it was really well build(not sure if it was identical) like yours.

What is the shrinked component, on the third picture, bottom left? Seems to be a bit ripped? A fuse?
Does the LED light up? Measure voltages from AC to DC to find where it is defect…

6

My guess would be a fuse.

It looks like it says T1A, i.e. a 1A fuse, on the pcb.

7

And again the 1 minute crap has got me….

if it is a fuse check for continuity…

8

Yep, opened the shrink and it is a fuse.
I don’t mind searching the fault, eBay seller Kelesecurity sent already a new power supply.

I’m still pretty pleased with the quality, this is probably 1 / 15 of Xtars that have passed through me and this was first that had problems :slight_smile:

9

I would recommend against doing this, it would be to easy to slip up and short something.

10

coward

11

My XTAR WP2 power cable just died too. My TR-006 and TR-008 chargers on the other hand have been and still are working happily and reliably and have done far more total charges than the XTAR WP2… TR-006 is 1/3 the cost too…

12


The polarity is marked on the case.
I used one 12V 1.5A I had laying around with the same polarity and plug thickness.

There are also universal power supply available everywhere, I would check amazon and ebay if you can find something suitable…