Service manual

Wells-Garnder Color Vector Monitor Guide
Page 26 of 73
Symptom: Green Does Not Turn Off When Dimmed All The Way
On neck board:
• R512 (shorted to nearby wire or connecting wires wrong)
• R519 (connecting wires wrong)
• R520 (open)
• Q501 (reversed, open, shorted, or broken wire to base)
Symptom: No Blue
On neck board:
• R504 (wrong value)
• R515 (open or wrong value or broken wire or swapped with R505)
On deflection board:
• D803 (bad) or neck board connector wired wrong)
Symptom: Only Blue
On deflection board:
• red lead in neck board connector broken
Symptom: Blue Does Not Turn Off When Dimmed All The Way
On neck board:
• R504 (open)
• R521 (open)
• R522 (open)
• R529 (open)
• Q502 (reversed, emitter open, or shorted to nearby component)