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Old 08-20-2017, 11:25 AM #1
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Default Oh, what a relief .... !!!

I'm smiling again after I thought I fried one of my 7W NUBM44's.
Like a nitwit, not paying attention to the runtime, I was mucking around with a Sanwu 3x BE on one of my Rick Trent 7W units.
It got a little warm so I turned it off and let it cool before putting it away.

The next day it wouldn't turn on and my suspicions turned to panic after trying a fresh set of batteries and even dismantling it.

I honestly thought I fried it and my last resort was to resolder the rim of the driver because I remembered this happened previously on another unit I have.

Just before getting the soldering iron out I thought I'd give it one more try tonight and gave it a slight couple of taps.
There was a flash of blue and then with the next tap, a beam of 450nm goodness re-appeared.

Well, you can imagine my relief.
It was music to my protected eyes.



Lesson re-learnt.

RB


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“He who believes in Him is not condemned;
but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God.
And this is the condemnation, that the light has come into the world, and men loved darkness rather than light, because their deeds were evil.
For everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed.
But he who does the truth comes to the light, that his deeds may be clearly seen, that they have been done in God.”
(John 3:16-21)
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and it is with your mouth that you confess
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Old 08-20-2017, 12:48 PM #2
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Default Re: Oh, what a relief .... !!!

Wow..I can really feel the relief you felt after that pit in your gut
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Old 08-20-2017, 01:02 PM #3
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Default Re: Oh, what a relief .... !!!

I've had this feeling 2 or 3 times now with my builds. It's a heart attack each time, huh?
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Old 08-20-2017, 01:16 PM #4
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Default Re: Oh, what a relief .... !!!

Hi RB,
Glad it turned out ok i hate when these lasers start playing with my head not funny.. I feel your pain...

Rich
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Old 08-20-2017, 01:36 PM #5
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Default Re: Oh, what a relief .... !!!

Quote:
Originally Posted by RB astro View Post




RB
And the band plays on.

Edit, how do I get rid of the words "attached image" ?
Attached Images
 
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Old 08-20-2017, 01:43 PM #6
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Default Re: Oh, what a relief .... !!!

but what did the tap do?
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Old 08-20-2017, 02:36 PM #7
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Default Re: Oh, what a relief .... !!!

Quote:
Originally Posted by RB astro View Post
I'm smiling again after I thought I fried one of my 7W NUBM44's.
Like a nitwit, not paying attention to the runtime, I was mucking around with a Sanwu 3x BE on one of my Rick Trent 7W units.
It got a little warm so I turned it off and let it cool before putting it away.

The next day it wouldn't turn on and my suspicions turned to panic after trying a fresh set of batteries and even dismantling it.

I honestly thought I fried it and my last resort was to resolder the rim of the driver because I remembered this happened previously on another unit I have.

Just before getting the soldering iron out I thought I'd give it one more try tonight and gave it a slight couple of taps.
There was a flash of blue and then with the next tap, a beam of 450nm goodness re-appeared.

Well, you can imagine my relief.
It was music to my protected eyes.



Lesson re-learnt.

RB
What actually did you tap
If it requires a tap on the Laser to get it started
you probably have an intermittent connection
somewhere... You know what happens if you rapidly
apply and remove power...(Supply Spikes)...

Quote:
Originally Posted by BobMc View Post
And the band plays on.

Edit, how do I get rid of the words "attached image" ?
You can't unless you delete the attachment IIRC.
What were you trying to do with the banana Smilie ?

This.....



If this is what you were trying to do you will need
to copy the Smilie URL into the "Insert Image" tag
over your Post Edit page.


Jerry
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Last edited by lasersbee; 08-20-2017 at 02:43 PM.
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Old 08-20-2017, 03:44 PM #8
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Default Re: Oh, what a relief .... !!!

Quote:
Originally Posted by lasersbee View Post


You can't unless you delete the attachment IIRC.
What were you trying to do with the banana Smilie ?

This.....



If this is what you were trying to do you will need
to copy the Smilie URL into the "Insert Image" tag
over your Post Edit page.


Jerry
Yes, but as far as I know I tried every tag on the "post edit page" and still came up empty . All I got it to do was post a link but not a picture? If you wouldn't mind, which tag/tab are you talking about?
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Old 08-20-2017, 05:03 PM #9
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Default Re: Oh, what a relief .... !!!

Quote:
Originally Posted by BobMc View Post
Yes, but as far as I know I tried every tag on the "post edit page" and still came up empty . All I got it to do was post a link but not a picture? If you wouldn't mind, which tag/tab are you talking about?
I've attached a pic of the tab to use.....

Jerry
Attached Thumbnails
Oh, what a relief .... !!!-insert-image.jpg  
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Old 08-20-2017, 05:09 PM #10
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Default Re: Oh, what a relief .... !!!

What great news ! I know that feeling in the pit of your stomach when you start to realize your laser might be toast and your most likely the cause ! It's the worst......
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Old 08-20-2017, 05:16 PM #11
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Default Re: Oh, what a relief .... !!!

Yeah... Been there... Done that...

Jerry
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Old 08-20-2017, 06:17 PM #12
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Default Re: Oh, what a relief .... !!!

Quote:
Originally Posted by lasersbee View Post
I've attached a pic of the tab to use.....

Jerry

lasersbee

That is one of the ones I tried. It's the same one I use when I post pictures. But for some reason when I paste the URL in it, just comes up as a link and not a picture???

Any chance it could be the dinosaur 5c I'm using?
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Old 08-20-2017, 10:40 PM #13
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Default Re: Oh, what a relief .... !!!

Thanks everyone.

Quote:
Originally Posted by Alaskan View Post
but what did the tap do?
Quote:
Originally Posted by lasersbee View Post
What actually did you tap
If it requires a tap on the Laser to get it started
you probably have an intermittent connection
somewhere... You know what happens if you rapidly
apply and remove power...(Supply Spikes)...

Jerry
Ah, sorry I should have elaborated on that.
I've had trouble in the past on my other two Rick Trent 7W builds.
The driver is soldered onto the copper sink and it's very difficult to do because the copper dissipates the heat so quickly.
I posted a thread about it back in 2014 and was given some great advice.
See link below:
What's the best method for soldering onto solid copper heatsink?



The driver board looses connectivity via the solder points because of the high current/heat generated.
I was about to pull the MX900 apart to resolder the board in the hope that this was the problem and not the diode burning out.
Just before I started I gave the MX900 a couple of taps with the palm of my hand and it came good.
So I assume it's a weak solder joint to which I plan to resolder it again.
It's just that this third unit looked so much better soldered up than the previous unit Rick sent me that I thought it couldn't be that.
He's improved the soldering around the board from his initial builds.
I'll test it again and post some pics as an update but boy what a relief.
These builds are awesome and the sinking capabilities are fantastic but even Rick has a challenge to solder onto the solid copper sinks.
Thanks for the tip Jerry Re: Supply Spikes
Quote:
Originally Posted by BobMc View Post
And the band plays on.

Edit, how do I get rid of the words "attached image" ?
Quote:
Originally Posted by lasersbee View Post
You can't unless you delete the attachment IIRC.
What were you trying to do with the banana Smilie ?

If this is what you were trying to do you will need
to copy the Smilie URL into the "Insert Image" tag
over your Post Edit page.

Jerry
Hey Bob, yep it's what Jerry said, copy and past the whole link into the Insert Image Tag.
Here's the link to Mr Banana Smilie.

http://www.iceinspace.com.au/vbiis/i...es/party05.gif

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For God so loved the world that He gave His only begotten Son, that whoever believes in Him
should not perish but have everlasting life.
For God did not send His Son into the world to condemn the world,

but that the world through Him might be saved.
“He who believes in Him is not condemned;
but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God.
And this is the condemnation, that the light has come into the world, and men loved darkness rather than light, because their deeds were evil.
For everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed.
But he who does the truth comes to the light, that his deeds may be clearly seen, that they have been done in God.”
(John 3:16-21)
─────────────────────────────────☀
If you confess with your mouth, “Jesus is Lord,” and believe in your heart that God raised Him from
the dead, you will be saved.
For it is with your heart that you believe unto righteousness
and it is with your mouth that you confess
your faith and
are saved.
(Romans 10:9-10)
─────────────────────────────────☀

Last edited by RB astro; 08-20-2017 at 10:41 PM.
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Old 08-20-2017, 10:51 PM #14
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Default Re: Oh, what a relief .... !!!

Loose connections can be a pain. I rarely if ever have them on my own builds, but have run into it with lasers I've purchased from eBay. Depends on the size of the copper you are trying to solder to. A large piece does pull heat away making soldering difficult if not impossible. I have given up in despair before when trying to heat a small section on a large piece of copper.
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Old 08-20-2017, 11:06 PM #15
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Default Re: Oh, what a relief .... !!!

The only way I've found to do it is with a High
Wattage Soldering Iron or soldering Gun. Heat
up the large mass heat source first. Make sure
the parts to be joined are already tinned with
solder.

Place the parts to be joined and apply Heat.
Don't hold the heat source on too long or you
may damage one of the parts being joined.

If you can't get a solder joint then your heat
source is not massive enough or can't maintain
a solder melting temperature.

Try to hold the pieces with thermal insulated
items to not draw away any additional heat
from the items being joined...

Jerry
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Old 08-20-2017, 11:18 PM #16
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Default Re: Oh, what a relief .... !!!

Paul, Jerry, Bob, Chris, Rich, Pete & Lildutchboy7 thank you.
That's why I love LPF, it's full of great people full of knowledge that are willing to help out someone in need, unselfishly giving honest advice to help a fellow member out in need.
I'll keep you updated.
I've got to go to work now to afford this all consuming hobby. {Bob }

Cheers
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