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GCW Zero => General => Topic started by: com64 on February 16, 2017, 06:31:22 am

Title: New, Better GCW LCD Screen available
Post by: com64 on February 16, 2017, 06:31:22 am
Great news, I've found a new drop-in replacement LCD panel replacement for the GCW, sourced from Digikey (http://www.digikey.ca/product-detail/en/newhaven-display-intl/NHD-3.5-320240MF-ASXV-/NHD-3.5-320240MF-ASXV--ND/6099686).

It looks better than the stock LCD, has a much wider viewing angle, and there's no pixel inversion to speak of. This is due to the difference in LCD technology; this is an MVA panel (https://en.wikipedia.org/wiki/Thin-film-transistor_liquid-crystal_display#MVA), comparable to IPS panels.

I've uploaded an album, the pictures speak for themselves:
New LCD (http://imgur.com/a/rHqjn)
Original and New LCD comparison (http://imgur.com/a/v21BT)

I do offer an LCD replacement service (among other things, check my webpage linked in my signature), but it's easy enough to replace yourself if you're careful. You do run the risk of damaging your hardware, however, so I wouldn't recommend replacing it yourself unless you have a soldering iron handy in case a wire breaks off somewhere.

No modification to the firmware is necessary.

Comparison videos; original LCD on the left.
https://www.youtube.com/watch?v=rFGl83H7TWchttps://www.youtube.com/watch?v=KZM8p7SeE3g

Title: Re: New, Better GCW LCD Screen available
Post by: Swarmadd on February 16, 2017, 10:13:23 am
This is great, it looks delicious 8)

I'd like to know more about 3 things, compared to the stock one :
-Power consumption, because battery life of the GCW is so great !
-Response time (that would be 25/40ms according to the datasheet (http://"http://www.newhavendisplay.com/specs/NHD-3.5-320240MF-ASXV.pdf") !? )
-What about the brightness at min/max settings ? I love the truly dimmed lcd of the Zero at minimum setting (compared to the Caanoo!)

(I don't even know the reference/specs of the stock lcd  ::) )

Anyway, this is awesome !!
Title: Re: New, Better GCW LCD Screen available
Post by: com64 on February 16, 2017, 11:54:28 am
The response times are equivalent to that of the old LCD, but it is a bit brighter. It still looks good on the lowest brightness, I think. I haven't tried it out outside yet (it hasn't been daytime yet :P) but I'll take some more pictures soon.

I'm not sure about the power consumption; it may be slightly higher due to the brighter backlight, but the logic circuits may be more power efficient; I'd have to test that out somehow.

Here are the datasheets, you can read for yourself (one of them defines the measures of response times, viewing angle, etc):
[NEWLCD] (http://www.newhavendisplay.com/specs/NHD-3.5-320240MF-ATXL-1.pdf) [OLD LCD] (http://www.universaldisplay.asia/wp-content/uploads/2013/07/KD035G6-54NT-A1.pdf)
Title: Re: New, Better GCW LCD Screen available
Post by: wepecko on March 12, 2017, 08:05:21 pm
I need to find a source in Europe to avoid the horrible shipping :-)
Title: Re: New, Better GCW LCD Screen available
Post by: howie_k on March 13, 2017, 07:20:56 am
@wepecko, Digikey have a UK site too, if that helps;
http://www.digikey.co.uk/product-detail/en/newhaven-display-intl/NHD-3.5-320240MF-ASXV-/NHD-3.5-320240MF-ASXV--ND/6099686
Title: Re: New, Better GCW LCD Screen available
Post by: dreamesper on March 13, 2017, 06:22:38 pm
I have a few, stock LCD screens for the GCW ZERO if anyone is interested...


www.dreamesper.com/shop

;)

Title: Re: New, Better GCW LCD Screen available
Post by: jmorneno114 on April 22, 2017, 09:31:46 pm
hey com64 can you provide video? I want to see both of the screens in action side by side. I am interested in your replacement service
Title: Re: New, Better GCW LCD Screen available
Post by: com64 on April 23, 2017, 12:24:10 am
hey com64 can you provide video? I want to see both of the screens in action side by side. I am interested in your replacement service

I'll see what I can do.
Title: Re: New, Better GCW LCD Screen available
Post by: jmorneno114 on April 23, 2017, 02:31:20 am
Hey so to clear something up you provide the screen too (for a free of course) in addition to the labor on replacing the old screen with the new one?
Title: Re: New, Better GCW LCD Screen available
Post by: com64 on April 28, 2017, 08:41:09 am
I don't have two fully working GCW's on hand at the moment, but I hooked both the old screen (on the left) and the new screen (on the right) up to Playstation 2 consoles through a component interface, and loaded up the same game twice.

Here's a side-by-side comparison:

Photo Album (http://imgur.com/a/v21BT)
Video: both screens at default brightness. (https://www.youtube.com/watch?v=KZM8p7SeE3g)
Video: new screen with the brightness adjusted down. (https://www.youtube.com/watch?v=rFGl83H7TWc)


Hey so to clear something up you provide the screen too (for a free of course) in addition to the labor on replacing the old screen with the new one?
Yep, I can order the screens. (I think I answered you in an email, but I'll clarify it here anyway.)
Title: Re: New, Better GCW LCD Screen available
Post by: superfenix2020 on June 09, 2017, 09:30:03 am
Does anyone else has purchased and can ensure that it makes a difference with respect to the official screen GCW Zero?
Title: Re: New, Better GCW LCD Screen available
Post by: tramtrist on July 03, 2017, 07:42:14 am
If only i could find a new bezel I'd have a reason to pop open my GCW to install this screen I have sitting in front of me :p
Title: Re: New, Better GCW LCD Screen available
Post by: superfenix2020 on July 09, 2017, 11:58:25 pm
If only i could find a new bezel I'd have a reason to pop open my GCW to install this screen I have sitting in front of me :p
https://retro-gaming-fanatic.com/products/lcd-screen-bezel-for-the-gcw-zero
Title: Re: New, Better GCW LCD Screen available
Post by: tramtrist on July 10, 2017, 12:53:13 pm
Thanks bud but its been sold out for quite some time
Title: Re: New, Better GCW LCD Screen available
Post by: superfenix2020 on January 26, 2018, 12:09:56 am
Does anyone else has purchased and can ensure that it makes a difference with respect to the official screen GCW Zero?
anyone?
Title: Re: New, Better GCW LCD Screen available
Post by: wepecko on July 31, 2018, 07:05:25 am
Does anyone else has purchased and can ensure that it makes a difference with respect to the official screen GCW Zero?
anyone?

So I did the change recently.
I confirm the hw is the same size, the replacement process is easy, you need just a screwdriver to get inside and dismount the board.

There is no wow moment with new lcd, but I can confirm better brightness and much better viewing angles. Therefore the colors seems to be a bit more lively.
Im happy to have old display as backup now, just in case, in the drawer.
Title: Re: New, Better GCW LCD Screen available
Post by: com64 on July 31, 2018, 11:52:29 pm
So I did the change recently.

Nice.
Title: Re: New, Better GCW LCD Screen available
Post by: Qubits on September 17, 2018, 03:36:34 pm
What about the color accuracy ? Your screen seems to be kind of inaccurate compared to the original. It would be nice if you could take better videos with a 4k camera and with better lights, maybe also videos taken from outside with the daylight.
Title: Re: New, Better GCW LCD Screen available
Post by: com64 on September 17, 2018, 10:51:29 pm
Or course, it's not going to have exactly the same colour temperature as the  stock LCD. It's a slightly different panel technology and iirc has a different type of LED. I would say it's slightly warmer.

As for videos, I've been waiting for a second gcw all this time.

Best you'll get out of me are cellphone camera videos.
Title: Re: New, Better GCW LCD Screen available
Post by: Pumpytums on November 16, 2018, 09:45:28 am
Hi,
thanks for the info.

I put the screen in my GCW last night it works great, looks much better too those old viewing angles annoyed me.

I used the link for the screen for digi-key in the UK, screen came in two days make sure your order comes to ?33 then you don't pay shipping. (I added some tape)

Thanks again
Title: Re: New, Better GCW LCD Screen available
Post by: ace9094 on November 24, 2018, 08:05:56 pm
Hi all,

How difficult is it to fit the new screen ?

thanks
Title: Re: New, Better GCW LCD Screen available
Post by: Aeter on November 25, 2018, 02:38:51 am
Hi all,

How difficult is it to fit the new screen ?

thanks
Depends how good you are at tinkering and soldering.
There are a lot of components that break easily, but nothing that can't fixed with a little care and soldering really.
If you've never done anything like it before, I would not recommend doing it yourself.
Title: Re: New, Better GCW LCD Screen available
Post by: ace9094 on November 25, 2018, 11:54:09 am
Hi all,

How difficult is it to fit the new screen ?

thanks
Depends how good you are at tinkering and soldering.
There are a lot of components that break easily, but nothing that can't fixed with a little care and soldering really.
If you've never done anything like it before, I would not recommend doing it yourself.

Well I am AWFUL at things like that... I have big unsteady hands  ;D :o Thanks for replying... I wont waste my ?30... To be honest I may sell my GCW... I have feeling we will see a much better device in the latter half of next year  ;) :-X
Title: Re: New, Better GCW LCD Screen available
Post by: superfenix2020 on December 24, 2018, 06:47:46 pm
new best screen for GCW-Zero?

Marca: Tianma
Modelo: TM035KDH16
Tama?o diagonal: 3.5 pulgadas
Tipo: tft-lcd a-Si, LCM
Formato de p?xel: 320 (RGB) ?240 QVGA
Configuraci?n: raya vertical RGB
Superficie: antirreflejo
Brillo: 300 CD/m? (typ.)
Relaci?n de contraste: 500: 1 (typ.) (TM)
?ngulo de visi?n: 70/70/60/70 (typ.) (cr≥10)

Tiempo de respuesta: 20 (typ.) (TR + TD) MS
Modo de funcionamiento: TN, normalmente blanco, transmisivo
Color de soporte: 16.7 M 50% (cie1931)
Tipo de l?mpara: 6s1p wled
Tipo de marco: 60Hz
Panel t?ctil: sin
Tipo de interfaz: RGB Digital (8/24 -bit) + SPI, ccir601/656, FPC, 54pin


the old screen that takes a GCW Zero, if I'm not mistaken, is this:

Esta pantalla LCD TFT es compatible con LQ035NC111 54pin LCD
La pantalla LCD TFT tiene 3 tipos de modo de visualizaci?n: TN, normalmente blanco, transmisivo

Especificaciones:

Modo de visualizaci?n: TN, normalmente blanco, transmisivo
Resoluci?n: 320RGBx240
?rea de visualizaci?n: 70,8*52,56mm/2,79 * 2.07in (HxV)
Brillo: 300 cd/m⊃2; (Typ.) --> incluso puede que sea de 250
Relaci?n de contraste: 400: 1 (Typ.) (TM)
?ngulo de visi?n: 60/60/50/55 (Typ.) (CR≥10) (izquierda/derecha/arriba/abajo)

Pantalla: retroiluminaci?n LED
Modo de funcionamiento: TN, normalmente blanco, transmisivo
Tipo de interfaz: RGB Digital  (8/24-bit) + interfaz perif?rica serie, CCIR601/656, 54 pins, FPC