I didn't think so. I had just finished an AV mod on one of my 4 ports 5200 (I have like 3 or 4 of them, all with "*" in the serial number) and anyway on my first test I got good picture from the AV port but the smoke was coming out of the RF box on the top right side of the board. Wonder why it's doing that. I snipped the leads going from the mainboard to the silverbox (which pretty much permantly disable onboard RF) and the smoking stopped.
Anyone keeping an archive of the Great Unsolved Mysteries? Add this one to it.