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55" TCL 55R617 4K UHD HDR Roku Smart HDTV EXPIRED

$490
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Electronics Express via Rakuten has 55" TCL 55R617 4K UHD HDR Roku Smart HDTV on sale for $569.99 - $80 w/ coupon code EE80 (apply at checkout) = $489.99. Shipping is free. Thanks DJ3xclusive

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Specs
  • Resolution: 3840x2160
  • Clear Motion Index: 120Hz
  • Roku Smart + WiFi
  • HDR & Dolby Vision
  • Inputs:
    • 3x HDMI
    • 1x Composite
    • 1x USB 2.0
    • 1x Ethernet
    • 1x Digital Audio Optical
    • 1x Audio Headphone
    • 1x RF
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Edited March 22, 2019 at 11:20 AM by
Electronic Express via Rakuten.com [rakuten.com] has a TCL 55R617 Roku SmartTV for $490. Use code EE80
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$490

Community Wiki

Last Edited by monkeybiz March 24, 2019 at 03:50 PM
The Banding issue on TCLs.

It's NOT a banding issue. But it does look like banding.

What's actually happening is that the Static Dithering Algorithm used by TCL sets, Does not convert Gradient patterns very well from 4:2:2 or 4:2:0 input.

That is to say, most standalone bluray players/ apps that outputs 4:2:2 or 4:2:0 will show the banding like artifact.


If you have a PC you can test this.. using 4:2:2 on 8,10, 12 bit input will give you banding on most (10bit) gradient test patterns.

Whereas using 4:4:4, there's no banding 8/10/12 bit. So it's not banding, it's the sharpening + chroma filter messing up the subpixel upscaling


So to be precise, This was more/less an intentional design choice, the static dithering pattern may enhance hdr highlights through contrast, because it dims more of the surrounding pixels. You lose some texture detail with this type of dithering, and it causes fringe artifacts along with upscaling artifacts..

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#31
99% of people won't even notice any of the issues being discussed here...Go to a Best Buy and check it out, and be the judge for yourself.
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#32
This TV definitely has banding issues. Just do a color test and it's pretty obvious. I've heard some people have gotten decent panels though. If you're going to buy one, maybe get it at Best Buy so you can check it before you take it home. Might cost a few bucks more, but less hassle if the panel is bad.
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#33
Quote from xtp
:
It's NOT a banding issue. Read the wiki post ontop of this thread.

There IS something wrong, but it's not banding.
Question - so if I don't watch DVDs/Blue Rays I'll never notice the issue? 98% of what we watch is streaming/satellite.
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#34
I bought a tcl 4k Roku 55" at Costco about 6 or 8 months ago some kind rebate at the counter and a coupon or something. Paid like 350 for it. Great tv no complaints. I'm sure there's something different about it compared to this one though or this deal would be less slick. I think mine was a "4 series" or something.
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#35
Quote from prometheus351
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I bought a tcl 4k Roku 55" at Costco about 6 or 8 months ago some kind rebate at the counter and a coupon or something. Paid like 350 for it. Great tv no complaints. I'm sure there's something different about it compared to this one though or this deal would be less slick. I think mine was a "4 series" or something.
You got an s series, which is their budget line and can usually be had for $350 at Costco, Sam's, BJ's,etc... this is the R series, which is their performance line
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#36
Ok that makes sense. It's been a good tv so far. Games look pretty on my xbox one x, main reason I picked it up.
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#37
Quote from JMBauer74
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This TV definitely has banding issues. Just do a color test and it's pretty obvious. I've heard some people have gotten decent panels though. If you're going to buy one, maybe get it at Best Buy so you can check it before you take it home. Might cost a few bucks more, but less hassle if the panel is bad.
No it does not have a banding issue.. But it DOES have an issue.

Read the wiki on top of this thread.
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#38
Quote from johnsq316
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Question - so if I don't watch DVDs/Blue Rays I'll never notice the issue? 98% of what we watch is streaming/satellite.
If you don't know what banding is, How could you notice it ?? laugh out loud
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#39
Quote from Lancerz
:
99% of people won't even notice any of the issues being discussed here...Go to a Best Buy and check it out, and be the judge for yourself.
I wouldn't say that. It all depends on how bad the uniformity issues in your particular set are. I can understand me noticing it since I was aware of the issue before hand but my wife who doesn't care about any of this type of stuff noticed issues on the set I had.
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#40
Quote from xtp
:
No it does not have a banding issue.. But it DOES have an issue.

Read the wiki on top of this thread.
Wiki page is incorrect. Run color test. The banding is obvious.
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#41
Quote from JMBauer74
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Wiki page is incorrect. Run color test. The banding is obvious.
You don't know what you're talking about.

All displays with band to some degree, but there is no obvious banding on the TCL sets except when 4:2:2 or 4:2:0 is upconverted.

This is not an issue of banding, it's the dithering and sharpening algorithm muddling the gradient test patterns, when the 4:2:x is converted to 4:4:4.

In 4:4:4, all bit modes, 8/10/12 there is no banding.

Again, this LOOKS like banding, but it's not banding, it IS a rendering artifact result of their algorithm choice.
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Last edited by xtp March 24, 2019 at 02:29 PM.
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#42
if local stores price match, it'll be good deal, lowest price I've seen so far.
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#43
Quote from xtp
:
No it does not have a banding issue.. But it DOES have an issue.

Read the wiki on top of this thread.
you better be sure, why hasn't this been mentioned in all the reviews? Is it only PC use? Regardless it doesn't have to be in giant font, we aren't blind.
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#44
Anyone ever notice stuttering with this 6 series TV during fast action panning scenes where the camera has to move quickly from left to right or right to left? Is it due to limitations of the video processor?
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#45
Quote from xtp
:
You don't know what you're talking about.

All displays with band to some degree, but there is no obvious banding on the TCL sets except when 4:2:2 or 4:2:0 is upconverted.

This is not an issue of banding, it's the dithering and sharpening algorithm muddling the gradient test patterns, when the 4:2:x is converted to 4:4:4.

In 4:4:4, all bit modes, 8/10/12 there is no banding.

Again, this LOOKS like banding, but it's not banding, it IS a rendering artifact result of their algorithm choice.
You are not making sense. You state all tv's have some degree if banding then state this tv does not have banding, which is it. TCL sets can and do have banding issues even with the issue mentioned in the wiki.
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