How to change the bulb on your
Sawyers Rotomatic Slide projector.
procedure is similar for changing the bulb on a Minolta
slide projector or a GAF projector or even the less common
First, find out what's the right
projector bulb for your slide projector. Often you will find
the bulb name on the back of the projector beneath the power
switch. Sometimes the bulb model will be printed on an
serial number plate on the bottom.
Most of the projectors we're
talking about will use either the DAK bulb or the DYY/EGH
The DAK bulb is a 500-watt
projector bulb that looks like an old radio tube (remember
those?) Such bulbs were made by GE, Sylvania, Westinghouse
but now we've got about the only brand still in existence -
you've got to get the top off your Sawyers projector. On the
600 series and the 700 series, you lift up the top cover as
Make sure the projector is not
plugged into the power supply.
There's no latch. Just put your
finger tips under the ridge and pull up. Note how the cover
slips under the ridge on the right side, so you'll be able
to replace it.
bulbs look like this from the top. The blue dome is the
bulb. The top of the bulb is usually painted or coated to
keep light from shining out the top of the projector. It may be black or gold colored instead of blue, and
occasionally we still see one that doesn't have any color at
all on the glass.
Grasp the top of the bulb and
pull it straight up. Do not twist it at all!
If you're in the slightest bit
nervous, put on a work glove.
The bulb should come out with
only a few pounds of effort, and the base should come out
intact. Now you'll see this:
This is close to life size. If
you don't see something like this, chances are the bulb is
broken and the base is still stuck in the socket.
Look at the center hole in the
socket at the right. Do you see there is a "key way" to make
sure you orient the bulb facing the right way?
When you insert the new bulb,
rotate it gently until the tag on the bulb base drops into
the key way of the socket. Then press it firmly, straight
down into the socket.
We recommend you use a glove to
avoid getting skin oils on the bulb - they make it burn out
Some projectors use the 2-pin
FBG/FBD quartz bulb, which looks like this.
Variations of this bulb may have a longer tube which
doesn't swell at the top. They are full
interchangeable. You remove them by pulling straight
out. Caution - be sure the bulb is cold before
Use gloves or a cloth to avoid
getting oil from your skin on the new bulb.
models use either the DAK/DAY/DAT bulb or the DYY/EGH
bulb. At the time of manufacture, the DYY/EGH was
found only on the more expensive models.
This is the
About the color on the top of the bulb: may be
black, blue or gold. This is just to keep light from
shining out the top of the projector, and
manufacturers have used different colors and
materials. It doesn't really matter.
recommend the halogen DYY/EGH bulb - it's better
and now costs less. DAY/DAK bulb. 500 Watts, 120
volts. For most Sawyers and many other slide
how to order the older DAY/DAK bulb
|DYY/EGH bulb 500 watt 120
volt. Fits Sawyers 707, 747AQ, many other slide
projectors made by Sawyers and other such as
Some bulbs of this designation
look different. The base is the same but the bulb
envelope is more rounded. Either type has the same
how to order the
more advanced replacement bulb,