Need help with broken torch :(

Hi peeps.

I have a LED lenser P7 torch, started playing up yesterday wasn't latching on when pushing the power button.
Found out online that it's a resistor that lifts on the ocb At the power button.
Took it apart and soldered that but still does not latch on with the first click which is high power.
I found this



It's cracked in half

From what I can work out its got 1RO on It. which I think is 1Ohm ? 0603 size I think ?


Anyone know where I can get a surface mount replacement. Torch runs on 4xaaa battery's.

Ty

Would a through-hole fit in the case?

Maplin would do those but not sure if they do 1/8W size (small axial).

Spectre said:

Would a through-hole fit in the case?

Maplin would do those but not sure if they do 1/8W size (small axial).

Click to expand...

I wouldn't think so mate as these torches are made up from s removable battery cartridge and the switch is part of this. Has a pcb under the button. With two surface mounts, one controlling high power and one on low power.

If last resort could try a normal one I guess :-s although don't know if can make it fit lol

Rs2k_Rider said:

I wouldn't think so mate as these torches are made up from s removable battery cartridge and the switch is part of this. Has a pcb under the button. With two surface mounts, one controlling high power and one on low power.

If last resort could try a normal one I guess :-s although don't know if can make it fit lol

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Just bend the leads a bit with small pliers . Or follow the pads to somewhere more convenient to solder to.

Spectre said:

Just bend the leads a bit with small pliers . Or follow the pads to somewhere more convenient to solder to.

Click to expand...

I'll take it apart again tomorrow an show Ya.

There are some images online but can't link them in from phone.

These any good. Edit. No good

These what I need peeps ? :-/
http://pages.ebay.com/link/?nav=item.view&alt=web&id=271226769572

Rs2k_Rider said:

These what I need peeps ? :-/
http://pages.ebay.com/link/?nav=item.view&alt=web&id=271226769572

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1W will be huge, definitely not 0603 .

Spectre said:

1W will be huge, definitely not 0603 .

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Ah crap lol

I'm not even sure what a 1R resistor is doing in there .

Had a torch apart the other day to repair but there was a knackered glob-top of some description. Just set it to full whenever the switch was pressed.

Spectre said:

I'm not even sure what a 1R resistor is doing in there .

Had a torch apart the other day to repair but there was a knackered glob-top of some description. Just set it to full whenever the switch was pressed.

Click to expand...

Not sure either :-/ it's a cree led torch so runs super bright. Dunno if that's why it's in there ??

From what I can find its 1R0, which looks to be 1 Ohm ?
There's two resistors in there, one controlling low and one for high power.

Rs2k_Rider said:

Not sure either :-/ it's a cree led torch so runs super bright. Dunno if that's why it's in there ??

From what I can find its 1R0, which looks to be 1 Ohm ?
There's two resistors in there, one controlling low and one for high power.

Click to expand...

That's the board that it's come off.



That slides inside that holder up tight so don't know if a normal resistor will squeeze in.

That's much bigger than 0603 .

Measure the existing one to guess what it is but those 1W ones are looking promising.

Spectre said:

That's much bigger than 0603 .

Measure the existing one to guess what it is but those 1W ones are looking promising.

View attachment 85815

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Got nothing small enough to measure it mate

Rs2k_Rider said:

Got nothing small enough to measure it mate

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Look at your screwdrivers, somewhere it will tell you the width of the flat ones.

Looks like 6.4mm-ish so the 2512 1W ones will do.

Spectre said:

Look at your screwdrivers, somewhere it will tell you the width of the flat ones.

Looks like 6.4mm-ish so the 2512 1W ones will do.

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Am I measuring the length or width mate ? Long edge or short edge ?

Rs2k_Rider said:

Am I measuring the length or width mate ? Long edge or short edge ?

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Long edge, approximate will do .

Spectre said:

Long edge, approximate will do .

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The one that's left is between 6-7mm.

You need the one at the bottom of that table then, 2512.

Those ones off fleaBay will probably be right .

Spectre said:

You need the one at the bottom of that table then, 2512.

Those ones off fleaBay will probably be right .

Click to expand...

Okay mate. Nice one

I bet Maplin don't sell them !