8 Feb
2002
8 Feb
'02
12:53 p.m.
On Fri, 8 Feb 2002, Tony Duell wrote:
Multilayer boards I've found are often not worth trying to patch if they
have a crack or charred spot in a critical area. Most all the PSU boards
I've seen have been single sided or sometimes double sided boards. Each
could be patched up if physically damaged.
I've done just that. In a pinch, grid-board and some patience can work too
;)
-Toth
Wire jumpers,
some epoxy, and some silicone can even fix a physically
broken board in a pinch.
True. It gets harder if the board is multi-layer (i.e. more than just
double-sided) and/or the tracks are used as HF transmission lines (so the
width/spacing/route are critical). But those are not likely to apply to a
PSU. In the past,
I've repaired even charred boards. Most of the materials pc
boards are made from carbonize and become conductive when exposed to
True. SRBP boards are much worse than glassfibre for this.
intense heat. I've used a dremel tool to
cut/grind away carbonized areas
of boards and replace it with new material or wire jumpers. This is a
You might be able to etch a 'patch' -- a small PCB that can be fitted
into a hole cut in the original and then joined up. It would be worth
doing that if the original PCB was SRBP (the replacement could be
glassfibre).