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how necessary is it??

M

milantheone

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hi guys i would like to ask

how necessary is to remove a little circuit board on the back of the LD-bluray diode?

this is a part which scare me a lot.. i dont want to overheat a diode with one big blob of solder which cover all three pins...

can i simply leave this circuit attached on the diode????

will it have any affect??? does it matter???

it seems that there is enough lenght of the pins even with circuit attached for soldering a wires...

:-/ :-/ :-/ :-/ :-/ :-/
cheers
 

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rog8811

rog8811

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If that is your module, you need to get the LD further into the recess to get good heat transfer to the module. You need to get the PCB off to be able to fully insert the LD easily.

Regards rog8811
 
M

milantheone

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rog8811 said:
If that is your module, you need to get the LD further into the recess to get good heat transfer to the module. You need to get the PCB off to be able to fully insert the LD easily.

Regards rog8811
Click to expand...


no this is not my module.. i just found this picture on the net and it is just demonstrational picture..
 
E

ElektroFreak

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Forum member Mohrenberg recently wrote about a really good method for removing that PCB. First you need a curved pick of some sort (you can probably make one out of a paper clip or safety pin). You put a large drop of solder on the end of your iron, wedge the pick underneath the PCB, touch the drop of solder to all three pins at once (which melts the solder on the pins) and use the pick to lift the PCB right off. All told it should take less than 2 seconds to remove it, and this method will give you the cleanest results.
 
rog8811

rog8811

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and use the pick to lift the PCB right off.
Click to expand...
I do the same with a cocktail stick if the ribbon pcb is too short to hold with pliers.

Regards rog8811
 
M

mike666

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This is how I get mine off.

Put the diode into the aixiz then put the aixiz into a vice to hold it still.

Then place a small thin peice of metal under the circuit board (I use a very small thin screw driver).

Then gently prise the circuit board up as you are applying heat to the pins.

If you do it properly, the circuit board will start to come up bit by bit until it comes off.
 
M

milantheone

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cheers guys

i actualy know how to do it, i have just afraid.. my soldering skills are not good.. i am confident to solder a wires to the pins, but i have scare to remove this little board because of overheating a didode..

nevermind thanx for advices i will practice and maybe one day i will be confident with this
 
rog8811

rog8811

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As long as your LD is fully seated you can leave it on, just don't insert the LD in the module by pressing on the PCB as you may loosen the LD pins.

Regards rog8811
 
andy_con

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tiny screw driver under the pcb, big blob of solder and off it comes.

thats how i do it, not to difficult
 
D

danq

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Somebody suggested a while back, to just use something like fingernail clippers to cut it off bit by bit.
That sounds good to me.

But... I normally do like most people, use an exacto blade under the circuit and pry up while heating all 3 pins. The LD's aren't really hypersensitive to heat, in my experience - sometimes my hands don't do what I intend and are shaky, so it takes me a while to get that little circuit off, and things get hot - but I've never killed one with my soldering iron!
:)
DanQ
 
M

milantheone

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DanQ said:
Somebody suggested a  while back, to just use something like fingernail clippers to cut it off bit by bit.
That sounds good to me.

But... I normally do like most people, use an exacto blade under the circuit and pry up while heating all 3 pins. The LD's aren't really hypersensitive to heat, in my experience -  sometimes my hands don't do what I intend and are shaky, so it takes me a while to get that little circuit off, and things get hot - but I've never killed one with my soldering iron!
 :)
DanQ
Click to expand...


good to know Dan.. i am scared because all that info around the forum how sensitive LD is to heat..

anyway this fingernail clipper sounds good to me also...

:) :)

cheers
 
T_Warne

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In my first attempt I found that they are sensitive to being heated for too long.   [smiley=engel017.gif]
On my second try ( just to err on the side of caution) I used very pointy cuticle scissors to carefully cut the board into pieces. It took a little while, but the result was a working LD. [smiley=thumbsup.gif]

I'm sure that  using the "tiny lever + blob o' solder" technique is probably the fastest way to do the job, but I'll take safe over fast any day.

TW
 
D

danq

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T_Warne said:
I'm sure that  using the "tiny lever + blob o' solder" technique is probably the fastest way to do the job, but I'll take safe over fast any day.
Click to expand...
in this case a compromise is in order... fast is safer, if done well! ::)

I didn't mean, above, to imply that there is no sensitivity to heat - just that they aren't butterfly wings. or Icarus' wings, is closer...

Better to have a bit extra heat, than shaky hands nervously stumbling in trying to speed things up!

T_Warne's method actually is slower and faster: takes time to nip all that stuff off; then the final removal is lightning-quick to get the remaining little bits via soldering iron! Sounds like a good plan for novice solderers.

:)
DanQ
 
Mohrenberg

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use a pick to stick behind the pcb and then heat up a big drop of solder on a soldering iron, and then put the big drop of solder on all three pins and slide the board off as it melts the contact point on the board...

it takes less than a second to do this and it works great....it's how i do it everytime.

i've seen builds that leave the pcb board on though...

maybe if you have a good pair or sewing scissors (the tiny point ones) they would prob work good for clipping it away.
 
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