Denso EFI potting=ack!

[Karoly Hoss]

Fred Zillinger wrote:
> 
> >  The Suzuki TL1000S arrived on Friday.  It's fitted with a Denso ECU.
> >There's no EPROM slot, and the production version of the box is
> >completely potted with the most satanic stuff I've ever seen.  It's
> >like RTV with lots of ground glass mixed in... Is this an industry
> >standard potting material?
> 
> The same stuff was used in some Ford ignition modules. I think the reason they add the
> silicone to the potting is that sand is cheaper then RTV,
> 
> I found that a hot air pencil worked to soften the RTV and then it just crumbled away. It
> was still a lot of work.
> 

 
hot air will do the job . 
no epoxy could ever resist to the near solder temps
and it isolates the heat so the board is almost safe 

bye
charley

ps heat it till it feels like a dense jelly
and peel it off