Replacing diode

Hey,

I just got this module http://www.dealextreme.com/details.dx/sku.5914

How would I go about extracting he diode thats inside it and replacing it with another?

Same as we do with an Aixiz module -- Disassemble it, don't loose the spring under the lens, unscrew the rear barrel and press out the LD !!

Easy

Mike

Hmm... there is nothing on the opposite side to unscrew... I got the front focus thing off and the spring out, but there is nothing else I can possibly unscrew...

It does take quite a bit of force to unscrew it. I have the same module.

Can't you just take it out like you'd do in the aixiz modules, you know by hammering it to pieces. ;D Or you can get a vice and do this: (pic by Rog8811)

I use a pair of pliers and twist in opposite directions. I also use 2 pliers for pressing the diode in

Thats for the info, ill make another attempt.

You can actually see a tiny rift where they are put together,the diode sits in the front end,and the driver in the back end,just secure the back end in a vise,and turn the front end of with pliers or something.Oh,and you WILL have to use some force,since the ends are glued AND screwed together...Be carefull not to leave too many scratch marks,as i did on my first one... -.-

Here is what i have found to be the easiest.

1. Remove lens and spring, put in a ziploc bag so you don't lose the spring or get dust inside the lens.
2. Unscrew the housing and desolder the circuit board. The module acts as a heatsink.
3. Screw the housing back together. Set it on a bench or hard floor.
4. With a big enough flat screwdriver, or better yet a 1/4" driver for sockets, or a 1/4" extension bar. Hit it firmly with your palm or tap witha hammer. SHould pop it right out.

To install new one.
1. Unscrew housing.
2. Insert new LD into the correct spot. Flip the back part of housing and put the small hole around the leads and up against the diode.
3. With a cheap "C" clamp, press the assembly together while holding it to make sure it stays aligned.

If you don't have one of those C clamps, which are ~$3, just go to one of the big Home improvement stores and use one there. It should take about 10 seconds, and it makes sure it goes in straight.

This type of clamp:
http://www.homedepot.com/webapp/wcs...langId=-1&catalogId=10053&productId=100133416

The problem i have with the "C"(aka "G") clamp is that when tightening the unit to secure the diode in the module, it can twist the module on one end and as a result it can damage the pins on the diode. It would be safer to use a vice(if possible) because a G clamp works buy turning like a screw and the surface(depending on the clamp) may also turn. A vice is 2 flat ends squashed together. A vice is a must for any DIY'er

A drill press also works as an arbor press !! That's how I do it.

Mike

Hemlock Mike said:

A drill press also works as an arbor press !!  That's how I do it.

Mike

Click to expand...

Hmm, never thought of using mine. What do you use in the chuck to do this? Do you swivel your table so that it's just flat? My drill press doesn't have a vise like some, just a flat iron "table" with a hole in the center.

Hmm, never thought of using mine. What do you use in the chuck to do this? Do you swivel your table so that it's just flat? My drill press doesn't have a vise like some, just a flat iron "table" with a hole in the center.

Click to expand...

More often than not I use my drill press to remove and replace LD's, If you swing the table sideways the chuck will no longer be over the hole. You can stand the module on the table, I have found that a brake adjuster from a bike is the perfect size to do both jobs, the hole in the middle is just small enough to push on the front of the LD can and just big enough to pass over the pins when inserting. Just make sure the front end of the adjustor is nice and flat (remove the burr at the end of the thread).

Regards rog8811

I put a block of hard wood on the table to protect the threads then use a piece of tubing to press the diode under the chuck.

Mike