I have two Tech view 42" ptsw4200u televisions. The screens do not come on and stay black

Top 144 Complaints and Reviews about Insignia TV

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Rating: 1.5 - ‎80 votes My son purchased a 42" Insignia TV for me before he died. ... Bought 50 inch Insigniaand after 13 months screen starts going black but sound stays on. ... I was having problems with the Netflix app on my 42" Insignia smart TV, so I took the ...

You may have a fried power board if nothing comes on at all. This may mean removing the power board and inspecting for blown capacitors. You can observe which have blown by their expansion. Check this or maybe a wiring issue. If you do have orange codes then check this link to get ideas:

TechView PTSW4200U Television orange light blinking standby Questions

your zsus board is failing replace it and the fuzzy screen will go back to normal

have almost the same problem left side is black with sometime blue line red lines or a whole bunch of different lines some one help please have sound and right side of tv works fine

Most likey its a bad panel, you can try adjusting VS voltage on Y main board, if this is to complex you will need a tech

that kind of problem needs a tech right away.

If your tv is flashing 7 times. Disconect audio module. It is on top of power supply. Turn tv on you will have picture. Conect the audio outout from the rear. To the aux. input of a stereo. Where you night control audio level. Or get a new audio board. Its is very expensive get only the audio amp I. C. The audio. part. No. 1-866-539-11

See my solution and part numbers for other comment. My total cost, including free S & H was $440.

Not a compete solution, but If you can view the cable box guide/listings, I'd give the cable company tech support a call.