Question about Hitachi P50H401 50 in. Plasma HDTV
Hitachi Plasma TV model P50H401 is 5 months old and screen would go black and come back on. Started infrequent then progressively got worse. Happens when playing DVD so its not the cable provider. Sent to get fixed and was returned last week. They put in a new power PC board according to paperwork. It is starting to happen again after only using for less than a week. Wierd thing is that it seems really bad for the first two hours or so with the screen being black for maybe even 10 minutes. Audio never goes out. Then maybe it will be ok for several hours and picture will go off and on again. You can get no picture when it is black not even the tv menu. Is there a different card to be replaced, replaced PC board is bad or what. I've got another call in to get fixed since its under warranty but it leaves me with no TV for month or so.
This is from a tech tip I got that should help.
1. The Power Supply may not be producing the correct voltages.
2. The Digital Module (Digi-Main) may not be producing correct
turn on commands (Power 1 and 2).
3. The Logic PWB may not be supplying the correct Vs/Va turn on
commands (Vsago and Vcego).
The Panel can have a defect of two natures.
1. The panel is shorted.
2. The panel is defective, but not presenting a short.
3. Y-SUS and/or X-SUS may be defective (Shorted and or nonworking
Posted on May 02, 2008
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Posted on Jan 02, 2017
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