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Checking For The "Full-Mod" Upgrade

Take the top cover off your NPS amplifier. In the center of the amplifier is a circuit board with eight large capactors (cylindrical components). Look down on the board, from above, and you will see some other components, located between them. If you see two large gray or silver flat square boxes, a little over an inch on each side, then your unit does not have Upgrade 2.

However, if you see something like this:

. . . then you have the factory's "Full Mod" upgrade. (Photo courtesty David Lee, Coral Springs, Florida)

Use your browser's "back" button to return to the NPS200/400 upgrade page.