UVP TB-107 User Manual

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Two of Four

Transilluminator

Transilluminator Ballast Replacement

Overview

The purpose of this Technical Bulletin is to explain the process of uninstalling and reinstalling a
transilluminator ballast on a UVP transilluminator.

To complete this procedure, the following tools and parts will be required:

• Phillips-head screwdriver

• 1/4” nut driver

• New transilluminator ballast

Caution: This procedure requires a moderate level of technical competence. If you are not
comfortable working with electronics, tools and/or related components, contact UVP for
assistance.

Removal Procedure

When performing the following procedure, place all components (screws, nuts, etc.) in a secure
location as they will be reused for installation.

1. Turn off the transilluminator by placing the power switch on the front of the unit in the OFF
position. Then, unplug the unit from the wall power.

2. Remove the four Phillips-head screws and washers securing the transilluminator filter frame
to the body of the transilluminator. Lifting up, remove the transilluminator filter frame from the
transilluminator body. Place the filter frame aside.

TTBB--110077

Transilluminator

Filter Frame

Body

Phillips-Head

Screws and

Washers

TB-107 Rev STD

3. Inside the unit, locate the side reflector panels which are two removable reflective metal

Side

Panel

Fixed

panels located at each end of the transilluminator light tubes. Note how these panels are
installed prior to removal, as this will aid with reinstallation later on.

Reflector

4. Pulling straight up, remove the side reflector panel nearest to the ballast from inside the
transilluminator.

5. Locate the two 1/4” lock nuts on either end of the ballast (circled in red below). While carefully
flexing the non-removable, fixed reflective panel out of the way, loosen and remove the two
lock nuts.

Note: Take care not to drop either of the nuts into the body of the transilluminator. Doing so
will require that the transilluminator be turned upside down, allowing the nuts to fall out of the
unit.

6. Carefully lift the ballast out of the transilluminator, taking care not to dislodge any of the wires
attached to the ballast. Place either end of the ballast on the fixed reflector panel, above the
UV bulbs, as shown below.

Reflector

Panel