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Date: | Sat, 22 Jun 2013 22:02:54 -0700 |
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Hi Phil,
Depends...How much is burnt and visible, and how much MAY be invisible
damage? I suppose the board is partly multilayer and partly singel layer.
And will the customer really accept a repaired HVP? I would not. If you
have a positive customer, can't you take a naked board, cut out a piece
that corresponds to the damaged area, and mount the new piece to the
damaged area. All depends on the complexity and location of the burnt
area. Sort of isolate the damaged area and replace with fresh one
Just popped up
Inge
On 21 June 2013 06:20, Nutting, Phil <[log in to unmask]> wrote:
> Good morning all,
>
> This is a question regarding the repair of FR-4 after there has been a
> high voltage arc/burn. In a recent failure we ground out all the burned
> material and "repaired" the board with 5 minute epoxy. This is on a
> pancake connector for a 160kV x-ray tube. I am of the opinion that 5
> minute epoxy will soon fail as it does not have the same insulating
> characteristics as the base FR-4.
>
> I see that Circuit Technology carries all sorts of repair materials/kits.
> So, if you were to salvage a burnt circuit board that had to ship right
> away, what materials would you use?
>
> Off line replies are accepted if you want to protect your sources or don't
> want to "advertise" on Technet.
>
> Thanks in advance for your wealth of information,
>
> Phil Nutting | HVP Development Engineer | Excelitas Technologies Corp
>
> Office: +1 978.224.4152
> 35 Congress St, Salem, MA 01970 USA
> [log in to unmask]<mailto:[log in to unmask]>
> www.excelitas.com<http://www.excelitas.com/>
>
>
> [Excelitas R_emailsig]
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