NEC PG Series
The NEC series of projectors are an exceptionally popular CRT projector, and
was one of the first models to use EM focusing. There are three models of NEC PG
sets. All have identical cabinets, so unless you see the model number on the
projector, you don’t know what set you have. Within each model, there were two
versions of each model. The 6 models scanned to 60 or 64 Khz in the case of the
PG Xtra, the 9 series scanned to 92 or 94 Khz.
The 9 Pg series in each model usually came stock with the point convergence
board and the video/S-video board. The 6 series did not come with those boards,
which can cause confusion when a new owner of a set finds the video and S-video
inoperative even though the input selection will show in the menus.
The NEC projectors were also made for Runco, and depending on who you choose
to believe, added little or lots of resale value to the set. Niceties such as a
screen trigger was added so that your screen would lower when the projector was
turned on, most of the cases were black, although some were white. Some PG sets
were also relabeled by General Electric. The GE models were grey in color and
as far as I know, GE did no modifications to the base NEC sets. The orange stripe on the GE
side panels did make the sets go faster down a hill if casters were added to the
bottom of the set..:)
NEC PG projectors
The PG series of projectors came out in 1992 or so and replaced the GP 3000
set. To my knowledge the PG series is the first EM focusing set that had
significant improvement in resolution and focusing over the ES focusing sets. (I
believe that the NEC GP series sets also were EM focusing, but they were pretty
darn soft, at least the ones that I’ve seen).
The PG series use tubes made by NEC, and they are rebuildable. They were
classified as 7” tubes, but actually have a bit larger phosphor area over the
typical 7” tube, so I call them 7 ½” tubes. The 6 PG scans to 60 Khz, the 9 PG
to 90. The 6 PG came stock with only the RGB input working, the video and S
video input were only activated with the installation of the optional video
decoder board. The 6 Pg also did not come stock with the 100 point convergence
board. The 9 PG came stock with both boards.
NEC PG + projectors
The NEC PG + sets added an astigmatism board for enhanced control of corner
focusing. Other than that, the tubes and chassis of the PG + is identical to the
NEC PG series.
NEC PG Xtra projectors
The NEC PG Xtra sets were similar to the + models, but the deflection board
had some changes so that it could not be interchanged with one from the PG or PG
+ sets. The same applies to the LV power supply. The Xtra set used slightly
larger (longer) tubes, and the brightness thus increased to 1000 lumens from
800. The max H scan rate changed to 64 Khz on the 6 PG Xtra and 92 Khz on the 9
Pg Xtra. Overall, the Xtra series gave a bit more punch than the PG and PG+
sets. The green tube used in the PG Xtra can also be used in the higher end NEC
XG series, but the R and B tubes are not interchangeable with the XG models.
To see how these projectors rank in relation to other projectors for use in a
home theater environment see the Projector Rankings
For full specifications on this and other projectors, see the
For an overview and history of NEC see the CRT
See the Advanced Procedures
page for various DIY instructions on maintaining and improving CRT projectors
including a NEC PG tube replacement
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