BR Pen diode went from good to this:

• Jun 18, 2009

• #1

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My blueray pen , went from a good strong beam to this output from the window without a lens... the "image" it projects looks like a old style key almost..

With a lens through "blueblocker type of glasses"

And it used to burn like hell , now it doesnt burn at all..


Anyone know if it's the diode or the driver might be at fault?

Thanks

 

Last edited: Jun 18, 2009

• Jun 18, 2009

• #2

Meatball

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wait... without a lens? If theres no lens being used in that pict... your diode should be fine, as well as your driver. Stick a lens on it and see what happens! I think you'll be surprised!

 

• Jun 18, 2009

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I edited my first post to include a pic of it with a lens through blueblocker type of glasses to greatly reduce the glare..

 

• Jun 18, 2009

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anyone?

 

• Jun 18, 2009

• #5

KGB_Productions

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Don't quote me on this BUT I know that acrylic lenses degrade over time.....maybe its time has come?

 

• Jun 19, 2009

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pseudolobster

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Take a really good look at the diode's aperture, there's a little glass window covering the opening.. I'm willing to bet yours has been broken or knocked loose. You might be able to salvage it by "decanning" the diode, though it's a bit difficult.

 

• Jun 19, 2009

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the window is fine ,and clean, im just going to replace the diode, hoping that if its the driver it wont kill the new diode too quick..

 

• Jun 19, 2009

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john_lawson

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its going dead mine did that and was like 1 mw instead of 100 or so
one of the solder leads broke loose on the pins i mleft it inthe hot car 110 degrees outside 150+ inside yikes all day may have contributed i dont know but i never leave in the car anymore

 

• Jun 19, 2009

• #9

Krutz

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to me, the driver looks fine, the diode is lasing. the pattern misses quite a lot, simply darker, without being mirrored/shadowed/focussed away. my guess is the diodes coating is burnt up quite much by overpowering it, and that the "rest" will follow in the next few minutes of runtime.. i would replace the diode, but just to be sure measure the current again.. should be fine with measuring with the old diode running (dmm in between one leg of the diode and its old connection from the driver)

manuel