Petzl Myo XP mod Luxeon III to Seoul P4 a lot of photos!!!!!!

msxtr

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Jan 2, 2007
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Lleida - Spain
Hi to all. :wave:

Well I first bought by error a seoul T-bin, but at the end I decide upgrading another time, but this time with a seoul U-bin. You could see beamshot of both versions.

Begin unscrew the four torx of the light with a torx key of T6 how this

petzlluxeonseoulp4012tp3.jpg


Now to take out the back cap and we see this

petzlluxeonseoulp41hc9.jpg


Now to take out the heatsink with careful, this go hook with a littles taps how can you see on the before photo, first begin with the bottom caps, once out, see this

petzlluxeonseoulp42li9.jpg


already could see the luxeon III original, now we have to take out the circuit, this go to pressure, stretch without fear and we get this

petzlluxeonseoulp43qc5.jpg


Another view

petzlluxeonseoulp44km2.jpg


The seoul p4 insert perfectly into the luxeon III optic

petzlluxeonseoulp48az0.jpg


View of original luxeon III and seoul p4

petzlluxeonseoulp46tg8.jpg


Another view of both leds

petzlluxeonseoulp47ie3.jpg


View of circuit with the led and the front cover with optic

petzlluxeonseoulp45pz3.jpg


Dissolder the luxeon III now can see the wires without the led

petzlluxeonseoulp49nr7.jpg


Now solder the seoul p4 to wires, warning!!!!!! look, the red wire go to + of led and black wire (brown) go to - of led!!!!!!!!!

petzlluxeonseoulp4010ox2.jpg


Now put it the seoul p4 into the hole of the optic and place the wires how was on the first photo, for can put the back cover correctly.

Already mounted, work so, brigh with 3 "click" (saver power) the light are to aprox 1 meter from the wall,

with T-bin

tbin1qh2.jpg


One clik with U-bin

ubin1is6.jpg


With 2 clicks (middle power)

T-bin

tbin2kf0.jpg


With U-bin

ubin2yk1.jpg



With 1 clicks (maximum power)

T-Bin

tbin3hc6.jpg



U-bin

ubin3id9.jpg


And the end, with the ultra power mode, this function only works during 20 seconds

T-bin

tbin4vk1.jpg



U-bin

ubin4to0.jpg



And here the headlamp in my helmet

casco1xv1.jpg


casco2aj1.jpg


Detail of holder

casco3iv5.jpg


I hope that you understand my explanations
rolleyes.gif



Greetings - Saludos

msxtr
 

bombelman

Flashlight Enthusiast
Joined
Aug 26, 2005
Messages
1,751
Great mod !

I did a similar mod a while ago too.
The color rendering is whiter compared to the old Lux with less color shifts
and the center spot is not square anymore.

Throw is also massive, since the optic has almost no spill (where a reflector has).

BTW, did you compare runtime ?
 

msxtr

Newly Enlightened
Joined
Jan 2, 2007
Messages
143
Location
Lleida - Spain
Great mod !

I did a similar mod a while ago too.
The color rendering is whiter compared to the old Lux with less color shifts
and the center spot is not square anymore.

Throw is also massive, since the optic has almost no spill (where a reflector has).

BTW, did you compare runtime ?

Thanks!!!!!! ;)

I too don't have could compare the runtime, the mod I do it today, but I think will are similar runtime.

Greetings - Saludos

msxtr
 

Gaffle

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Joined
Mar 10, 2006
Messages
552
Location
Garden City, MI
Ok, so the Myo is a DD light, so the circuit still only allows so much juice to the emitter right? I guess since the circuitry did not change the amount of power going to the emitter is still the same. Runtime would be exactly the same with the Seoul compared to the Luxeon, right?

Right?
Right?
Right?

:D
 

yycho2

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Joined
Oct 13, 2007
Messages
5
i just found this forum and owns a MYO XP.... the mod that was done looks promising. :thumbsup:

where can i get these SSC P4? what is the difference btw U BIN and T BIN?

thanks...
 

msxtr

Newly Enlightened
Joined
Jan 2, 2007
Messages
143
Location
Lleida - Spain
i just found this forum and owns a MYO XP.... the mod that was done looks promising. :thumbsup:

where can i get these SSC P4? what is the difference btw U BIN and T BIN?

thanks...

Hi, Sorry, I don't had seen your question untill now...

The difference between T-bin and U-bin version are that the U-bin version give more light with the same power. You can see the images to compare both versions.

Greetings - Saludos

msxtr
 

yycho2

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Joined
Oct 13, 2007
Messages
5
i've managed to upgrade my MYO XP to Seoul P4....

Good news is:-
much brighter than before...

Bad news:-
after i switch on the LED on high (not Blast mode), the battery indicator light will blink after 30 sec, i've tried on a few completely new ENERGIZER alkaline, still same... :mecry:

And i notice the heat sink is pretty hot... i've actually mod it using a PC heat sink which is chunkier and with fins

Question:-
1) Wat can i do to prolong the battery life?
2) wat input voltage can the MYO XP circuitry accept?
3) now is 3x AA, can i mod it to accept 4x AA?
 

hopkins

Enlightened
Joined
Nov 15, 2007
Messages
906
Location
California
Hi yycho2 - The blinking battery light is normal. My MYO XP has always blinked
The color changes to red when the batteries gets low but still blinks.
Nothing to worry about.
 

enrimo

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Joined
Dec 10, 2007
Messages
1
Great work! I was just wondering, what type of circuit is on the Petzl lamp?

Enrique
Saludos
 

jezzyp

Enlightened
Joined
Nov 29, 2005
Messages
326
Location
S Yorks, England
Finally did this mod so thanks for the excellent pictures - I would not have done it otherwise did not want to wreck my light.
Does the soeul get any hotter than the old lux? I put some more thermal compound on just in case but as I use think for hiking I don't want it to go poof.
I'm leaving it in all night as a test anyway.
 

hopkins

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Nov 15, 2007
Messages
906
Location
California
Great photos Msxtr!
I will do this to mine also.
Does anyone think the heatsink needs to be mod'd to dump more heat outside?
Something like the PT Apex does? Could be difficult. Maybe someone has
a simple, elegant idea!
I enlarged the slot on the bottom to let more air flow up over the heatsink
inside but would like more metal exposed.
 

Marko

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Feb 1, 2001
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Finland, Europe
Last edited:

Panter

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Joined
Mar 27, 2007
Messages
5
Great upgrade:)
Just one question: do you know (or anyone else), where could I get a different optic with more spill? Or is it a Petzl specific optic and you can not change it?
 
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