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How to Repair a Circuit Board... #265683 Sep 3, 1:27pm Sep 3, 1:27pm
Joined: Sep 2003
Posts: 3,077
Saint Louis, MO
slidr OP
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2000 Toyota Celica
slidr OP
Specialist
2000 Toyota Celica

Joined: Sep 2003
Posts: 3,077
Saint Louis, MO
How to Repair a Circuit Board...
Last night, I decided to do the LED swap on my Radio.

I'm removing the factory LED's from the board, and in the process, I'm having a hard time because my soldering iron tip is very shitty, and I have a lot of cold spots on the tip.

So instead of being smart and switching the tip, I continue the process. Well, I must have hit a cold spot on the soldering iron tip, and while gently prying the LED off of the board, it snapped off, along with the copper underneath it.

Good news: It's a light that I don't really need to light up, it's one of the lights that illuminate the tape deck entry.

Bad news: I'm determined to fix it for the hell of it. I think I may be able to salvage the copper from the LED, but how would I go about adhering it to the board, if it can even be done?

If I can' salvage the copper, then what is the technical name of the part so I can look for it in stores? I went to RadioShack today to ask about it, but the guy looked at me like I had an ass on my face.


Any help?


Aqua Teen Hunger Force...number one in the hood, G
Re: How to Repair a Circuit Board... [Re: slidr] #265684 Sep 3, 1:32pm Sep 3, 1:32pm
Joined: Apr 2004
Posts: 320
Philly
khmer215
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2004 Toyota Celica GT
khmer215
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Philly
i think you woulda saved urself from this mess if you waited to get a new tip. but in this case you might be able to solder a really thin strip of copper from point A to point B of the missing copper. make sure you buy a new tip b4 doing anything.


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Re: How to Repair a Circuit Board... [Re: khmer215] #265685 Sep 3, 1:43pm Sep 3, 1:43pm
Joined: Sep 2003
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Saint Louis, MO
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I bought a new tip, but you cannot solder a copper plate to the board if there is no plate on the board already.

I believe they are adhered to the board with some sort of epoxy.


Aqua Teen Hunger Force...number one in the hood, G
Re: How to Repair a Circuit Board... [Re: slidr] #265686 Sep 3, 10:40pm Sep 3, 10:40pm
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XxMerlinxX
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Honestly, I wouldn't try to resolder the copper back into place. You could inadvertantly damage your board more and kill more of your LEDs. In this situation, I would just cut my loses and put the board back. I mean really, do you need the tape-deck entry lit up? I know it's the principle of the thing, but you could mess things up more.


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Re: How to Repair a Circuit Board... [Re: XxMerlinxX] #265687 Sep 3, 11:36pm Sep 3, 11:36pm
Joined: Jun 2004
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sd, us
2002 red Toyota Celica GT
whywait
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they make a paint to repair rear window defoggers try using that to fix the circuit board. It's kinda spendy but what can you do???

Re: How to Repair a Circuit Board... [Re: whywait] #265688 Sep 4, 3:57am Sep 4, 3:57am
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drkramm
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what i use to do in my electronics class... which isn't trhe best idea but it got the projects working ... is to strip a copper wire and pull some strands out like 2 or 3 i would stick with 2 cause its only a led then solder them to the led then drop the led in to place and solder on to the orignal spot and then on to the copper trace anywhere eles you can


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Re: How to Repair a Circuit Board... [Re: drkramm] #265689 Sep 4, 10:23am Sep 4, 10:23am
Joined: Feb 2004
Posts: 1,716
Nebraska
celicafourotwo
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i thought you went with the decision to get an aftermarket stereo??? y are you doing this now??


Originally Posted by pesho01
Question:
Whenever my car is at a full stop or even in park the RPM never sits on 0. what does this mean?
Re: How to Repair a Circuit Board... [Re: celicafourotwo] #265690 Sep 4, 11:53pm Sep 4, 11:53pm
Joined: Sep 2003
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Saint Louis, MO
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Originally Posted by celicafourotwo
i thought you went with the decision to get an aftermarket stereo??? y are you doing this now??
Cause I decided to use red led's instead of blue. If I were to use just the red ones, it would have costed me under $5.

I decided to do the majority of the stereo red, and do the buttons blue.

Costed me only $20.


Aqua Teen Hunger Force...number one in the hood, G
Re: How to Repair a Circuit Board... [Re: drkramm] #265691 Sep 4, 11:58pm Sep 4, 11:58pm
Joined: Sep 2003
Posts: 3,077
Saint Louis, MO
slidr OP
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Saint Louis, MO
Originally Posted by drkramm
what i use to do in my electronics class... which isn't trhe best idea but it got the projects working ... is to strip a copper wire and pull some strands out like 2 or 3 i would stick with 2 cause its only a led then solder them to the led then drop the led in to place and solder on to the orignal spot and then on to the copper trace anywhere eles you can
Thanks for the advice. Looks like I will try to hardwire the LED this way.


Looked everywhere today, and no where sells copper foil, thermoset epoxy, or any types of circuit board repair kits that can be used to fix mounting pads.


I have one question for you though...

On the back of the LED, there is a T that designated polarity for the LED.

If the side of the LED that has a missing pad is on the bottom of the T, is it a ground, or not?


Aqua Teen Hunger Force...number one in the hood, G
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