Akai PDP4294LV1 Service Manual download pdf (Page 39)

PCB failure analysis

1. CONTROL: a. Abnormal noise on screen. b. No picture.

2. MAIN (VIDEO): a. Lacking color, Bad color scale.

b. No voice.

c. No picture but with signals output, OSD and back light.

d. Abnormal noise on screen.

3. POWER: No picture, no power output.

4. Z - Sustainer:a. No picture.

b. Color not enough.

c. Flash on screen.

5. Y - Sustainer: Darker picture with signals.

6. Audio Bard: a. No voice. (Make sure status: Mute / Internal, External speaker)

b. Noise

7. Y/Z - Sustainer: The component working temperature is about 55

If the temperature rises abnormal, this may be a error point.

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Akai PDP4294LV1 Service Manual Page 39