Sanwu 505nm Pocket

[loreadarkshade]

For public info / archives:

Repaired/disassembled a Sanwu Pocket 505nm 50mW today.
Driver is using the LT1931 Inverting DC/DC Converter, which was faulty and overheating on this board, causing a blink after long runtimes.
Their driver seems to be set to 400mA CC at the diode.
They are using a case positive Sharp 505nm SB4090K92

Went ahead a replaced the driver to my 11mm JLB4855 driver, used for my nano series, set to 480mA.
I also replaced the diode to a sharp 488nm. This pointer now outputs 146mW.

If you need repairing of a sanwu product, let me know in my DMs and I will happily repair it for a fair price.

 

[GSS]

Is that module threaded?
That would make the heatsinking even better..

 

[loreadarkshade]

Is that module threaded?
That would make the heatsinking even better..

Yes! Very solid design

 

[paul1598419]

I like how you are using a vice as the heat sink. You know steel isn't a very good heat conductor. I've got a finned one I got years ago here from a member whose name I can't remember. Sorry, I wish I could give you the name as it is aluminum and much better than steel.

 

[loreadarkshade]

I like how you are using a vice as the heat sink. You know steel isn't a very good heat conductor. I've got a finned one I got years ago here from a member whose name I can't remember. Sorry, I wish I could give you the name as it is aluminum and much better than steel.

This vice is actually made of aluminium.

But I am not using it as a heatsink. This is Sanwu's 50mW pocket laser which barely produces any heat (the diode part at least)
I use this small vice to hold drivers, PCBs, etc. just to hold the parts in place to make working on it easier

 

[paul1598419]

This vice is actually made of aluminium.

But I am not using it as a heatsink. This is Sanwu's 50mW pocket laser which barely produces any heat (the diode part at least)
I use this small vice to hold drivers, PCBs, etc. just to hold the parts in place to make working on it easier

Really? You don't see many aluminum vices. Too soft.

 

[loreadarkshade]

Really? You don't see many aluminum vices. Too soft.

Yeah! Its really cool, I love this thing

https://www.amazon.ca/dp/B077XXQG41?psc=1&ref=ppx_yo2ov_dt_b_product_details

 

[paul1598419]

And less than 900 gms. The price ain't bad either.