Toshiba 40FT2U1 Strange Screen Fault.

[Shinju]

Hey friends of the BCF!


Been awhile since I have posted a new panel to tinker with as its been slow and I have been busy with other stuff.

I got this Toshi for 5 bucks, I normally pass on these newer Toshiba panels as they are total crap now but this one kind of made me scratch my head and I had nothing on my plate so I took it in.

The top half of the screen is flawless, the bottom half is well as you can see in the photo below is distorted, you can see problem when the screen is black due to no signal.

The T-con is located at the top of the panel so I am not sure if this is tab bond, mainboard or T-con or ????, Almost like a bad Ydrive buffer on a plasma

Anyone seen anything like this before, I have not seen a tab bond failure like this.

Horrible photo, like I was saying, the top part of the screen looks perfectly fine.

[Shinju]

Re: Toshiba 40FT2U1 Strange Screen Fault.

Aww, no takers?!

[keeney123]

Re: Toshiba 40FT2U1 Strange Screen Fault.

If you search for this on badcaps it will tell you all you should need for this problem
LCD TV and Monitor basic troubleshooting guides
by BudM

[tom66]

Re: Toshiba 40FT2U1 Strange Screen Fault.

Panel. My bet.

[Shinju]

Re: Toshiba 40FT2U1 Strange Screen Fault.

Panel. My bet.

I am pretty sure it is, I am going to dive into it tonight and see. I have seen several tab bond failures but never anything like this.

The biggest thing with failed IC's is the slow, ghosting refresh rate that happens, this the affected part of the screen keeps right up with the top part of the screen.

This is what happens when I get bored and nothing new has come though, I do need to finish the Panny 42" 700u just waiting on parts.

[ReeceyBurger123]

Re: Toshiba 40FT2U1 Strange Screen Fault.

Yeah probably panel, see it alot with samsung panels if it uses one.

[tom66]

Re: Toshiba 40FT2U1 Strange Screen Fault.

I don't think Vestel exported TVs to the USA, but I don't think this is a Toshiba inside, it's probably some OEM.

[tw2005]

Re: Toshiba 40FT2U1 Strange Screen Fault.

I'm going panel, Samsung panel by the looks of things plus SJ just happened to have this note against the TCON for this.

IMPORTANT: Horizontal lines on the screen are virtually NEVER caused by a bad T-con board. Horizontal lines indicate a defective LCD panel (screen)

maybe this is how this one dies.

[tom66]

Re: Toshiba 40FT2U1 Strange Screen Fault.

It's how most LCDs die...

[tw2005]

Re: Toshiba 40FT2U1 Strange Screen Fault.

It's how most LCDs die...

Bless their souls. Long live PDP.

[ReeceyBurger123]

Re: Toshiba 40FT2U1 Strange Screen Fault.

I don't think Vestel exported TVs to the USA, but I don't think this is a Toshiba inside, it's probably some OEM.

Yeah I just realised I looked at the stand and sort of recognised the model number but it is actually a Toshiba but uses a Samsung panel.

[Shinju]

Re: Toshiba 40FT2U1 Strange Screen Fault.

PDP4LIFE!

Yup it was panel, I disconnected the right TFT ribbon from the T-con and the screen was whole on the left side.

Disconnected the left side and the screen was all kinds of messed up.

Parts!

There was NOTHING Toshiba inside, it was all OEM no name stuff.

[tom66]

Re: Toshiba 40FT2U1 Strange Screen Fault.

Sadly PDP is no longer with us. Let's hope OLED works out better, although I don't have much hope