Electronics Forum: how to fix a discolored pcb (Page 1 of 27)

How to fix flex bent after reflow

Electronics Forum | Wed Nov 02 02:04:43 EDT 2022 | angela t

Bend it for mounting,if it can't be mounted by bending assembly. you can choose other pick and place machine which can handle this flex pcb. How long is this flex board? And do you use jigs when reflow? Could you please send a picture of the jig yo

How to fix flex bent after reflow

Electronics Forum | Wed Oct 26 14:28:12 EDT 2022 | emeto

Hello colleagues, I have a very long flex assembly that I run on a SMT carrier by bending assembly in the middle. This crates a curve after reflow, which I want to get rid if. Any ideas.

How to fix flex bent after reflow

Electronics Forum | Fri Oct 28 19:11:20 EDT 2022 | dwl

Hire a fat guy to sit on them. My rates are very reasonable if you'd like a quote...

How to fix flex bent after reflow

Electronics Forum | Mon Oct 31 14:53:52 EDT 2022 | proceng1

Can you share a photo of this board on a carrier? I'm havinga hard time picturing this?

How to fix flex bent after reflow

Electronics Forum | Thu Oct 27 18:34:33 EDT 2022 | emeto

I don't have equipment that can handle this size of a board. Do you see any challenges on printing 48" board?

How to fix flex bent after reflow

Electronics Forum | Wed Nov 02 11:20:04 EDT 2022 | proceng1

Is the BLUE area the only place where parts are located? That is a very interesting concept. Why do they NEED to be flattened? Do they ship flattened, or are they installed flat? I assume that the use of flex is because the actual application re

how to control warpage on panelized pcb during reflow process

Electronics Forum | Mon May 13 06:38:41 EDT 2019 | relaycz

You need to give us a little more information. 1. What is the size of your panel? 2. Are there any heavy components? 3. What is the thickness of your board panel? 4. What kind of oven are you using? 5. Is it only a recent problem or ongoing one?

how to control warpage on panelized pcb during reflow process

Electronics Forum | Mon Jul 01 09:33:08 EDT 2019 | dbuschel

if you can't change the PCB materials or design at this point, you might be able to reduce it somewhat through the use of fixtures or edge stiffeners. Unless it is a particularly thick board, I don't think the reflow profile would be the issue. The t

Re: Soldering stranded wires to FR4 pcb

Electronics Forum | Fri Oct 16 14:36:11 EDT 1998 | Jeff Sanchez

| With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to overco

Re: Soldering stranded wires to FR4 pcb

Electronics Forum | Fri Oct 16 21:17:04 EDT 1998 | Scott McKee

| | With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to over

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