Hitachi_DW3_P42H401_P40H4011_P40T501_P50H401_P50H4011_P50T501_P55H401_P55H4011_P55T551_P60X901_No

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Version 04 (02/05/2008)

DW-3 NO PICTURE TROUBLESHOOTING Page 1 of 10

DW-3 CHASSIS PLASMA DEFECT TROUBLESHOOTING PROCEDURE.
The Below Information relates to investigations related to a Defective Plasma when there is no Picture at all.
Use this section for P42H401, P42H4011, P50H401, P50H4011, P55H4011 and P55H401 and P42T501,
P50S601, P50V701, P50X901, P50T501, P55H401, P55T501 and P60X901 Plasma Television.

No Picture:
1. The Power Supply may not be producing the correct voltages.
2. The Digital Module (Digi-Main) may not be producing correct NOTE: It would be very helpful is you have
one other document to accompany this one.
turn on commands (Power 1 and 2). (On our web site, see these models Things
3. The Logic PWB may not be supplying the correct Vs/Va turn on You Should Know section Power Supply
commands (Vsago and Vcego). Issues to download these documents.)
The Panel can have a defect of two natures. DW-3 Power Supply Explanation.pdf
http://www.hitachiserviceusa.com/service/
1. The panel is shorted. Seminars/Plasma-Web/DW3-Web/Fixes/
2. The panel is defective, but not presenting a short. 00-Things-Known.htm
3. Y-SUS and/or X-SUS may be defective (Shorted and or non-
working).

First monitor the front Power LED.