Solder Pad Lifted - Is it fixable?

[Gorrillasnot]

When attempting to remove a surface mounted transformer some of the solder pads lifted.
Is this fixable by a novice or is the board screwed?

thanks

[Kiriakos GR]

Re: Solder Pad Lifted - Is it fixable?

Ask from Santa to hand you over a pro soldering iron.

I do not think that you can rescue it, you better ask direct help from an expert in your location.

[Gorrillasnot]

Re: Solder Pad Lifted - Is it fixable?

at this point I'd probably be better off buying a replacement board even though I just spent $10 on a replacement transformer. Ugh!

[luke10050]

Re: Solder Pad Lifted - Is it fixable?

Depends, can you tie it in to one of the things from those other transformers? Or would that be a disaster waiting to happen?

[Nitro468]

Re: Solder Pad Lifted - Is it fixable?

Get another board, and some new equipment.. Now you have a board you can practice on... How long did you have the iron on that pad ?

[selldoor]

Re: Solder Pad Lifted - Is it fixable?

Well I would try and fix it - top 4 contacts middle 2 are not connected
end 2 go to bulb socket.

Bottom 4 more difficult middle two are primary outer are secondary, you will need to test where those pads go on the other transformers then just hard wire them in. - any clues on the back of the board

Better picture would help try and clean it up a bit first

[Kiriakos GR]

Re: Solder Pad Lifted - Is it fixable?

Well I would try and fix it

It is not about willingnes .. it is about owning an true soldering iron capable for SMD work, plus experiance about using it.

Why you do not ask for a picture of the soldering iron which caused this disaster ?

This is not another one story which deserves to start a debade about.... we just canot help the man by using a remote control.

[selldoor]

Re: Solder Pad Lifted - Is it fixable?

Well you just keep out of it and let those who want to try and help make fools of themselves. We were warned when you first joined this forum that you were argumentative, to put it mildly, and at the time I stuck up for you. I have kept away from any threads in which you have been involved but you have finally tipped me over the edge- Congratulations. I dont need to see the soldering iron - only the damage. If we can fix it from a distance and with his ability and soldering iron would you admit you were wrong.

[mariushm]

Re: Solder Pad Lifted - Is it fixable?

To keep it short (well my definition of short).

With a good soldering iron, you can solder some insulated wires to the leads of the transformer and then solder the other ends of the wires to some place where those pads are connected to.
Just look at the broken pads and follow the traces to some place that has a larger surface and would allow you to scrape off a bit of that white insulating material off and solder the wire there.
BUT keep in mind that transformer and the pads will have high voltage, so you MUST use then some heatshrink AND/OR some electrician's tape (maybe 2-3 layers of it)

From the looks of the board, it simply looks like the board heatsinks the solder iron tip very well (lots of copper in it or large traces from the pads) so the iron couldn't really heat up the solder enough to solder it right. There's lots of what seems to be burned flux and burned transparent pcb insulating film. Would be a good idea to use a bit of isopropyl alcohol to rub and clean that area (perhaps using a toothbrush)

[Kiriakos GR]

Re: Solder Pad Lifted - Is it fixable?

Well you just keep out of it and let those who want to try and help make fools of themselves. We were warned when you first joined this forum that you were argumentative

Mate close that imaginary friend of yours in a safe place, so to not cause any additional harm in your damaged sentimetal condition.

By accepting the fact that you are totally inexperianced to pass one worthy tecnical advice to others, you will feel much better.

[Gorrillasnot]

Re: Solder Pad Lifted - Is it fixable?

My original Insignia thread is here. I apologize for having 2 threads but my problem being technique and equipment related I decided to post here as well.
Anyways budm has posted a nice photo with diagram on my original thread and I will try and upload some pics.

Starting at the top the first pad is lifted but still attached to it's trace, the next 2 pads are not hooked to anything (to my understanding), and the top right pad is not lifted.
On the bottom row the first pad is lifted but still attached to its trace, the middle 2 pads are not lifted, and the right pad is completely gone with only the trace wire remaining.
It also appears I melted some of the solder points together in the grouping below the bottom middle right pin.

thanks everyone

[selldoor]

Re: Solder Pad Lifted - Is it fixable?

May as well just continue on the other thread then? Perhaps you can
post these pics on there as well.
That through the board pic is a great idea - I have used it before but forgot to suggest it.

[Kiriakos GR]

Re: Solder Pad Lifted - Is it fixable?

You better use some high quality glue as mounting point for the transformer on the PCB, and then try to restore the solder pads or by bridges wires.

[budm]

Re: Solder Pad Lifted - Is it fixable?

I fixed worst than this, glad to hear you got it fixed, apply electronic grade Silicone RTV on the wires and the transformer legs.

[budm]

Re: Solder Pad Lifted - Is it fixable?

Talking about hard soldering works, ever try to solder wires to FFC? This done using my good old trusty Weller WTCP from the early 70's.
https://www.badcaps.net/forum/showth...LN32A300J1DXZA