Pcb Failure Analysis - Akai PDP42Z5TA Service Manual

PCB failure analysis

1. LOGIC: a. Abnormal noise on screen. b. No picture.
2. MAIN :
3. PSU and Sub PSU: No picture, no power output.
4. X - Sustainer: a. No picture.
b. Color not enough.
c. Flash on screen.
5. Y - Sustainer: Darker picture with signals.
6. X/Y - Sustainer: The component working temperature is about 55
If the temperature rises abnormal, this may be a error point.
a. Lacking color, Bad color scale.
b. No voice.
c. No picture but with signals output and OSD.
d. Abnormal noise on screen.
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C.
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