Lifted trace, how to glue back down?

[Widget]

Hi all,

I have a PCB and one of the tracks lifted. I tried using superglue but no good, didn't stick.

What have you had success with at gluing down traces/tracks ?

[petehall347]

Re: Lifted trace, how to glue back down?

clean it first ..i have used superglue no problem

[SluggerB]

Re: Lifted trace, how to glue back down?

I usually replace the trace/pad with a small piece of copper tape that is a little larger than the original trace/pad, then apply conformal coating around the edge of it to bond it to the board.

I've had bad luck with Superglue, I can get it to stick but when I try and solder to whatever I glued down it usually comes back off again. But that's probably me just doing it wrong

[diif]

Re: Lifted trace, how to glue back down?

Superglue is broken by heat, not sure why that is being suggested.
Get rid of the ripped trace and replace it with copper wire.

SluggerB conformal coating is a coating not an adhesive.

[mentholflash]

Re: Lifted trace, how to glue back down?

It is Heatproof epoxy i think. I was told to mix ceramic dust and normal epoxy together and form it yourself but i didnt think this would work

https://www.circuitrework.com/guides/4-7-2.html

https://www.intertronics.co.uk/produ...nd-repair-kit/

https://www.ebay.com.au/itm/35491563...iABEgInR_D_BwE

[harp]

Re: Lifted trace, how to glue back down?

Hi all,

I have a PCB and one of the tracks lifted. I tried using superglue but no good, didn't stick.

What have you had success with at gluing down traces/tracks ?

On one layer pcb board usually is used very weak glue to hold traces... must be careful in future.
In this case, there is no point to use glue to hold track, just place track on board, put back legs of element to solder again, and wrap legs over track with thin copper wire few times. All that soak with solder tin to confirm it to one solid piece with track.

Superglue is cyanacril, and dissolve to hazard vapour when heating, protect lunge and eye when working with it.

[CapLeaker]

Re: Lifted trace, how to glue back down?

I use UV cure resin for just about anything that needs to be glued to a PCB.

[stj]

Re: Lifted trace, how to glue back down?

superglue/cyanocrylate is something that should never be used in electronics or anything that has a translucent area/window.
it will give off vapor that ruins windows in things.

wd40 is another thing that should be kept in a seperate building from electronics too.

[Widget]

Re: Lifted trace, how to glue back down?

Thanks everyone for the feedback.

I bumped the pad and it broke off (see attached image) , so I'll have to try a method of replacing the pad as others suggested.

Hole-to-hole is 4mm, I'm not sure how to properly secure the battery contact. If I use a pad that isn't secured to the board, the contact is going to be loose and possibly pull at the new joint?

[diif]

Re: Lifted trace, how to glue back down?

Forget trying to replace the pad, use copper wire instead.

[sam_sam_sam]

Re: Lifted trace, how to glue back down?

Forget trying to replace the pad, use copper wire instead.

I second this second this suggestion for repairing this board soldering joints to each other or if desoldering braid would also work as well and maybe even easier to use because it would lay flat if you used a couple of pieces next to each other for surface area contact

You really need to clean those metal pieces that contact the batttery as well

[Widget]

Re: Lifted trace, how to glue back down?

Forget trying to replace the pad, use copper wire instead.

I second this suggestion for repairing this board soldering joints to each other or if desoldering braid would also work as well and maybe even easier to use because it would lay flat if you used a couple of pieces next to each other for surface area contact

I understand soldering the legs together and to the track, but the contact itself would be wobbly. I could pickup some of that UV cure green PCB stuff, or even hot blue & glue down the contact itself from both sides & using a piece of wire, though I'm not sure how secure the contact would be.

So, besides trying some hi-heat resistant epoxy, there's no way of securing a new pad / copper tape to the board itself (that's soldering iron heat resistant)?

You really need to clean those metal pieces that contact the batttery as well

Already done. It's not perfect but heaps better than the images above.

[R_J]

Re: Lifted trace, how to glue back down?

Install the connector through the pc board holes then bent the tabs inward to secure it to the pc board, then just solder the tabs together for more support, then solder a wire from the connector to the broken trace

[Widget]

Re: Lifted trace, how to glue back down?

Thanks guys. I ended up just sticking the contact in and putting a blog of solder onto each leg & bridging to the resistor. The contacts I cleaned up, pretty beaten up but working.

One thing I noticed, the sticker on the bottom says DC output 1.4v but when I plug in the charger and probe the positive and negative contacts, the left contacts read 1.5v +/- and the right contact 2.3v +/- with voltages fluctuating a bit. I don't know much about chargers, I know they charge batteries at a slightly higher voltage than the batteries output, but does it sound like there's an issue there or is it just me?

[stj]

Re: Lifted trace, how to glue back down?

the numbers mean nothing, it's a piece of junk that regulates the current and voltage with a resistor!
it relies on the presence of a discharged battery for those figures.