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How do I get my Polaroid to power up? ?

i have polaroid flat screen tv screen goes black but still have sound ?

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ptv2148 no vertical?

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Polaroid HDTV Model 3700?

freeview not working?

I have no sound on my 32" Polaroid flat screen TV?

how can I remove a line on my plasma screen?

Where can I buy a stand for a tiny 15.6 " television.i?