Service manual

Wells-Garnder Color Vector Monitor Guide
Page 66 of 73
CHASSIS TRANSISTORS
All the monitor chassis transistors are mounted in a socket with two Phillips head machine
screws. No soldering necessary; just unscrew the old one and replace. You cannot put these
chassis transistors in backwards; the leads are offset so they will only fit into the chassis and
screw down in one direction. If you put the transistors in backwards, the screw holes will not line
up.
Make sure you install a new clear plastic Mica insulator between the transistor and the metal
monitor chassis. New ones are not included in the Zanen kit! If you have some white heat sink
grease, put a light coating on both sides of the Mica insulator.
WG6100 Monitor Chassis Parts
Location Part Number Notes
Q102 2N3716 transistor Power
Q103 2N3792 transistor Power
Q605 2N3716 transistor Deflection
Q606 2N3792 transistor Deflection
Q705 2N3716 transistor Deflection
Q706 2N3792 transistor Deflection
Important: after replacing the above transistors, use your meter set to Ohms and check the
continuity between the metal monitor chassis and the metal case of the above transistors. If there
is continuity, you need to either replace the thin clear plastic Mica insulator that goes between
the transistor and the monitor chassis, or readjust the transistor so the pins are not in contact with
the monitor chassis. There should be NO continuity! If there is continuity, you will usually blow
R100 or R101 (assuming you do not have an LV2000 installed). You will probably also take out
the 2N3716 or 2N3792 transistors involved, and they are not cheap!