I have a HP L1950 monitor and it powers on okay but turns black after 1/2 second then lights up again after 5 seconds then turns black again. When I hold down the power button it stays lit for as long as I hold down the button but when I release the screen goes black again.
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'''++@liftnhop++''' most likely a bad power board. Common for that type of monitor. Disassemble it and check the power board the same way you would for a no power situation. Page 38 on here ManualsLib - Makes it easy to find manuals online!
If unsure about anything you can always post some images of your boards and we can try to help you out. Use this guide 在已经存在的问题里加入图片 for that
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Have you ever checked out the button itself. Its a switch and could be damaged. The replacement should solve that.
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