Advice wanted: epoxy replacement on flyback

[VicNor]

I got a machine with a good analog board, but the flyback looks a bit rough around the epoxy with some indication of arcing. I remember an old video from Adrian Black (Adrian's digital basement) where he talked about the epoxy on B&W Macs are absorbing moisture and that he replace it.

My question: Is there a way to remove the old and apply new epoxy? And what kind would you use? I mean, it needs to be able to handle 10-12 000 V and preferrably not be conductive.

 

[Paolo B]

Just my experience, but some other people may have different opinions, more educated feedback.
The epoxy blob has no actual electro-magnetic function, it just makes sure that the assembly remains glued together.
The insulation (separation) between the two magnetic circuits is guaranteed by the white plastic sheath that you see underneath, which runs all the way through the core.
One of my machines has a refurbished flyback where I replaced the epoxy collar with a silicon one. Works flawlessly.

 

[VicNor]

Just my experience, but some other people may have different opinions, more educated feedback.
The epoxy blob has no actual electro-magnetic function, it just makes sure that the assembly remains glued together.
The insulation (separation) between the two magnetic circuits is guaranteed by the white plastic sheath that you see underneath, which runs all the way through the core.
One of my machines has a refurbished flyback where I replaced the epoxy collar with a silicon one. Works flawlessly.

Thanks a lot! What kind of silicon do you use? Are we talking normal silicon you use when working on your car?