Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

[SLK001]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

China has stock? If so, I would jump on one in an instant. Just make sure they use a tracked shipment (like ePacket, or similar).

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Thanks much, SLK001, for the comprehensive reply. I agree that all the signs are there for it to be the T-con that’s faulty including the very consistent pattern of the tv detecting a fault and shutting itself down, which I meant to emphasize in my last post.

I was not aware that the tv could not detect a fault in the screen but only in the boards themselves. That’s good information for me and others to know going forward.

I’ll follow your advice and not move the ribbons around anymore until the new T-con board arrives. May have to order it from China (which I prefer not to do in most cases) as I can’t find one in stock here in the States at the moment.

If anyone out there is reading this and has access to a working T-con they’d like to sell specifically for a Vizio P652ui-B2 television, here are the relevant Board and Part #’s and a link to the ShopJimmy site:

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https://www.shopjimmy.com/vizio-55-6...-con-board.htm

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Vizio 55.65T33.C02 T-Con Board
$29.00
Email me when this item is in-stock
This item is out of stock. The odds we'll get it soon:
Bad (What does this mean?)

sj-55.65T33.C02
180-Day Warranty
Part number can be found on the white barcode sticker.

IMPORTANT: Horizontal lines on the screen are virtually NEVER caused by a bad T-con board. Horizontal lines indicate a defective LCD panel (screen).
SKU: sj-55.65T33.C02
Warranty: 180-Day Warranty
Part Type: T-Con Board, LCD Controller, Control Board, CTRL Board, Timing Control
Part Number: 55.65T33.C02
Part Usage: LCD
Board Number(s): T650QVF04.0 CTRL BD, 65T33-C00
Substitute Parts: KIT-P652UI-B2-K1
Panel Sticker Number: T650QVF04.0
Panel Manufacturer: AUO
Notes, Comments & Additional Information: ShopJimmy recommends ordering by part number whenever possible. Often times there are TV models that use more than one set of parts and/or panels.
Brands: Vizio
Important Message: Part number can be found on the white barcode sticker.

IMPORTANT: Horizontal lines on the screen are virtually NEVER caused by a bad T-con board. Horizontal lines indicate a defective LCD panel (screen).
TV Part Types: T-Con
TV Models:
Vizio
P652UI-B2 LWJARJAR
P652UI-B2 LWZARJAQ

[SLK001]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

I would imagine that the side of the TCON which had the bad cable was damaged by it. Usually, when you see a "half and half" screen like you have, it is the TCON which bit the dust. Sometimes, it is a bad screen, but you have seen enough activity on the bad side to eliminate that.
As for flipping the ribbon cables around, don't do that anymore than you have to. Get a display and stop.
If the TV shuts down, it is detecting a fault in one of the boards. The TV CAN'T detect a fault in the screen, but it can the TCON, so it is looking more and more like a bad TCON. We can also do a failure analysis on the TCON - the ribbon cable most likely shorted a signal line, which blew the line driver on the TCON.

Looks to me like a new TCON is in order.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Well, the ribbons came today and they all looked good. Did not, however, get the magic I was looking for. I will try to quickly summarize the results:

1) Put the three new ones in along with the 4th original that still looked good. Nothing showed up on the screen at first and it started to do its Black Screen/Sound present for 2 minutes then click off and back on routine, when on the 3rd or 4th cycle of this the Vizio logo showed up and I got the left-hand side of the screen to show up with the white/pink/green showing on the other half.

So, in other words, it was behaving very much the same as it did two days ago and the new ribbons did not seem to have any effect. (the order at this point, when viewed from the back was ... Original ~ New ~ New ~ New). The set shut down after two minutes but I was able to capture the pictures below.

2) Then, I decided to disconnect the left-side cable from the top of the T-con that comes over from the Main Board. My hope here was that I could finally generate the half-screen image on the left (when facing from the front) and a pure white screen on the right because this left-hand cable was now not even reaching the T-con itself. However, the results were much the same here also when compared to a couple of days ago when I tried the same thing. Just a black screen and the sound present. Not having this cable in seems to deny the picture every time. Just like not having all four of the bottom ribbons in seems to deny the possibility of a picture as well. At least that's the pattern on both counts after about 30 tries and 3 days of effort.

3) Then I plugged the Main Board to T-con cable back in and switched around the order of the 4 ribbons at the bottom. The result here was that the Vizio logo showed up upon startup, and this time I got the half-picture on the left which was perfectly fine and on the right were the thin, white vertical lines (about a dozen of them) that showed up once upon a time before (see Post #29 from this thread).

4) Then I switched the order of the ribbons one more time and got the "rainbow solarization" look that I also experienced once before.


In short, it has done every crazy thing today with the new ribbons that it did over the last two days with only the original ribbons in. No breakthroughs at all, really, and I never have achieved a perfect picture on both sides of the screen .... not even briefly.

Importantly, it is still completely unpredictable as to when the Vizio logo will appear and I get some kind of imaging immediately thereafter and when it just powers up Black Screen with sound only present. Most of the time (maybe 80% to 90%) it is without picture. But then, just when I least expect it, it will come on. The only pattern I can detect at all here is that when I pull the ribbons out of the bottom of the T-con and rearrange their order, there is a MUCH better chance that I will get the Vizio logo and resultant image upon startup. I haven't counted, specifically, but I would say this has happened about 4 out of the last 6 or 7 times.


So ......... Does all this point to the T-con itself needing to be replaced? Seems like it's the likely culprit at this point in time. I am thinking there is a small chance that it might also be the ribbon that comes from the Main Board over to the T-con, but I think that is unlikely. I read online, based off of several different websites, that the "solarization" image is very likely, if not assuredly, a problem with the T-con itself. Does that theory make sense? If so, I can order one for about $30 and give it a try along with the 3 new ribbons and the originally good ribbon in play as well.


Note: Sorry I didn't get the solarization image while it was on, nor did I get the thin, white vertical lines on the right-hand side image. But, below you can see the pics that show what I described in Point #1 above.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

A free song, in fact.

The ribbons are due here in a few hours now. Fingers crossed they are all that’s needed. Will update soon. Thanks all.

[SLK001]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

One other question that came to mind:

1) How can these ribbon pins suffer this kind of damage in the first place?

It's possible that the cable was always like that and time took its toll on it. If it was damaged during someone's ineptitude repair techiques, then I would expect to see remnents of the cable, either still on the cable, or in the connector itself. Either way, it doesn't really matter.

If you're like me, you got the TV for a song, so if you can't fix it, you're not out all that much.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Makes the most sense, yes.

Previous owner did mention he got it after is was used as a demo model, so I was thinking that the high / extended heat might be at play as well. Not sure how many hours it has on it. I’ll try to check that after I get a clear and stable picture to arise.

[R_J]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

They were damage by someone that does not know what they are doing and not releasing the locks and just jaming the cable into the connector. Thats the only way they get damaged like that.

[budwich]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

i don't think you got the "whole story" from the owner... or maybe his "help diagnose person". :-)

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Thanks much, SLK001, for the replies.

One other question that came to mind:

1) How can these ribbon pins suffer this kind of damage in the first place?

I can’t tell if the affected pins were burned off from high heat or severed off at some point from lack of care when inserting. I don’t quite understand how they can be so erratically damaged across the width of the ribbon, with some being perfectly fine and others right next door having half-vanished. What’s the most likely cause, based on the photo with the green “cut” line on it?

[SLK001]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Have some related questions at this juncture as well:

1) Can I perform any kind of test to see if the T-con board has suffered damage?

Without advanced equipment, the only way I know how to test a TCON is to hook it up and power it on.

2) If the T-con board is damaged, how much risk is there that the new ribbons I'll be inserting will take on their own damage as a result of a faulty T-con?

The ribbons are only extensions of traces. So unless there are AMPS (there aren't) running thru them, your chance of damaging them is slim.

3) Can a T-con board with a design like this (a left chip and a right chip) be damaged, and therefore defective, only on one of the halves? I'm asking this because I was able to briefly generate a quite clear picture on the left half of the screen just a couple of days ago. Please see earlier posts.

Yes

Cutting on the green line is what you want to do.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Have some related questions at this juncture as well:

1) Can I perform any kind of test to see if the T-con board has suffered damage?

2) If the T-con board is damaged, how much risk is there that the new ribbons I'll be inserting will take on their own damage as a result of a faulty T-con?

3) Can a T-con board with a design like this (a left chip and a right chip) be damaged, and therefore defective, only on one of the halves? I'm asking this because I was able to briefly generate a quite clear picture on the left half of the screen just a couple of days ago. Please see earlier posts.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Sounds like a good idea. Like this then, cutting along the green line, right?

[SLK001]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

It's possible that some of the ribbon signals are not making contact. One thing that you could try, is cut about 0.05" off the top of the one bad ribbon. You also may need to extend the notches on the side of the cable by the same amount. This may allow the signals that may not be making contact finally connect. Basically, you're cutting off all the damage to the cable. There isn't much risk of damaging things any further (you're going to replace the cable anyway), so I would try it. There is still enough exposed contacts to complete the connections.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Thanks. I was thinking much the same thing, especially about the T-Con Board having possibly been damaged.

Within the last two hours, I also got a full screen image to show via the HDMI 2 port. It was very odd. Multi-colored (like, rainbow-type colorations) formed silhouettes in and around all of the human images (about 5 people were in the frame then) and these “outlined hues” traveled with the people as they moved through the shot. Like, glowing ghost-like images made up of blues, yellows, greens pinks and purples. I only left it on for about 30 seconds. Didn’t want to risk any further damage before the ribbons arrive in the mail. I wasn’t able to catch any pics of it, but if it shows up again then I’ll try to capture it.

Does that sound more like a result of a damaged T-con or could it still be just the faulty ribbons causing havoc?

[SLK001]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Having the full VISIO logo show up does not mean you don't have bad LEDs, because the LEDs are tested AFTER power-up. However, looking at your last set of pictures, it doesn't look like any LEDs are bad.

If the new cables don't fix the display, I would suspect that the TCOM was damaged from shorts in the ribbon cable.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

3 new ribbons are on their way in the mail. Hopefully here by Saturday.

I’m hoping they are all that’s needed to complete the image in full without flaw and that the tv will stay on as opposed to shutting down after 2-3 minutes (which is what it did again today in the aftermath of these new images). I expected that, but am hopeful that the shutdowns are the set simply detecting the T-con to Panel ribbon pin deficiencies.

Any insights you guys may have based on the above images would be most appreciated.

Note: The only reason, I think, that the No Signal box was appearing on screen was because it was searching for HDMI 1 and I had the cord plugged into HDMI 2 at that point in time today. I did not have time to switch it over before the tv automatically shut down.

Also, there was an onscreen menu that appeared for the first 5-10 seconds but I couldn’t grab the phone quick enough to capture that. Importantly, perhaps though, I did notice that some of these menu images were obscured behind and “underneath” the thin, white vertical lines on the right-hand side of the screen itself. It was the same as what you see in the above photo where the word Signal is obscured underneath the thin, white vertical lines in “No Signal”.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Something completely different just now:

This screen image (see photos below .... they’re upside-down again) appeared as a result of my having all 4 ribbons in and in the following order:

As seen from the back, facing the T-con board and its 4 bottom-edge ribbons that go out to the panel ...

The only ribbon whose pins were / are still intact = Far left now (originally was far right)

Slightly damaged = Inner left now (originally was inner right)
The other slightly damaged = Inner right now (originally was inner left)

and
The one that was clearly the most damaged in terms of the pins = Far right now (originally was far left.

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Hey all ~

[kca]

Re: Vizio P-Series 4K tv with temporary sound and no picture P652ui-B2

Just ordered three new T-Con to Panel LVDS ribbon cables. All were marked with the 69.65T33.F17 Part # enumeration. Should be here in about 5 days. Only got three because 1 that I currently have is definitely still good.

Figured that if I have any shot at all at fixing this up, I am going to need 4 functioning ribbons in both the short run and long run anyway.