Please if someone can direct me to a link where there a measuring is documented, so to know whether Sony x85k have PWM at below 15 or not ?

I have to have definitive data. I thought RTING test thoroughly.

RTING repeatedly claims that there is no PWM at all, and only DC dimming.

Second, do you know if Sony x80k (which have IPS panel) has PWM below 15 ?

    nogahorovitch I think the only option we have is to buy from a place were we can return the displays we buy to test them, people have different levels of flicker sensivity, maybe the x85 will not bother you at all, rtings measure pwm, but tvs have a lot of processing options that can introduce pwm and rtings only measure the tvs by displaying a white color but they dont specify what settings they used on the tvs to do the measurements, even when rtings say some tvs are flicker free most of the times they are not, you can realise that by looking closely at their own graphs, the only tvs that I saw are flicker free by rtings measurements, are the toshiba 55C350 and the lg 65QNED90, we only have to know the settings the tvs were at.

    .

        Abeabe I don't understand how you circled the Sony but not the Toshiba. I don't see any difference between the Toshiba and the Sony's on the 50% graph.

            Sunspark Yes there is a difference, if look closely at the image, the line at 50% in the sony 55x85J is not completely flat, the line is made of some mild valleys or very wide spikes, it is easier to see if you compare it with the graph line underneath.

              nogahorovitch using an oscilloscope and a photodiode, as discused here on another thread. I highly recommend a portable one for convenience and practical reasons. It can detect LCD inversion, too.

              As a warning this method does not fully validate good screens but rather the bad ones or their settings, as it cannot detect dithering at all

                Sunspark I see no difference, either, as no line can be totally flat with today's technology.

                For me, that Toshiba seems like a good candidate

                    Alyosha2001 Yes the oscilloscope line can have micro jitters as perfect flicker free led lights does not exist, but the line should be flat across all the graph and not fluctuating like the sony one does, because that in milliseconds is perceived as flicker.

                      I think those can be errors of measurement. If we could see the whole graph and not just 20 msecs, than we could see if there is a periodicity or not. I think they are just random and too small in amplitude to matter. Compare it to a pwm and see how they differ.

                      It can be a less perfect current driver, a flawed model, etc.

                      More importantly to me is if they were to measure the dithering.

                      The line in the toshiba 55C350 graph doesn't seem flat to me.

                      Also, it is not good as a PC monitor. "can't display proper chroma 4:4:4. This is disappointing if you want to use it as a PC monitor and want clear text" https://www.rtings.com/tv/reviews/toshiba/c350-fire-tv-2021

                      Is there a better option?

                      I'm really desperate to find a 50"-55" TV that its line is completely flat line, totally flicker free, in all the settings and brightness levels.

                      Also, is there another site that makes measurements, like rtings and even more thoroughly than them?

                        If you can, give the 55c350 a try. It consumes a little too much current, but maybe just at full specs. However it is it is a pretty rare thing to not have pwm.

                        In my country it is unavailable, so I cannot help.

                        Flatliners do not exist, just good enough to do the job ones.

                        Does anyone know if anyone tested BenQ's models: rm5502k / rm5501k / RP553K.

                        RTING did not test them.

                        dev