I just completed a hot air repair to the output stage of a VX1000/1i, replaced all the outputs and the HIP2101 drivers. But I noticed the silpad making the thermal link between the output devices and the sink is some sort of putty type stuff, and normal silpad isn't thick enough to fill the gap. Anyone happen to know what this stuff is or where I can obtain some?
I know the material you’re talking about, but this stuff is different. Almost gooey. And yeah, I wasn’t about to pay for a whole sheet of gap material when I only needed a couple inches, so I wound up making a copper spacer to span the thermal blocks on the chassis. That combined with a normal piece of silpad between the copper and the devices took up the space perfectly, and should be fairly thermally conductive. I put thermal paste between each piece, this thing doesn’t make much heat anyway so it should be fine.