Removing LCD screen from InDash Motorized - Page 2

jackdon · 10-08-2006, 10:34 PM

Hi Coucouillu,

It might be hard for me to find the FFC 32 way connector here, I know someone who does Touch Screen and he has agreed to help me solder from the screen panel. So I should be able to get it up fairly quick instead of waiting for the FFC connector if I were to order from the net to be sent to me. I am a rather impatient man without the CARPC

.

Now another question. Looking at your pinout diagram can I only use the following only for VGA

Pin ---- Signal
1 & 2 = +12 Volt
3 & 4 = Ground
5 = USB +Voltage
6 = USB -Data
7 = USB +Data
8 = USB Ground
9 = VGA Pin 6
10 = VGA Pin 14
11 = VGA Pin 13
12 = VGA Pin 3
13 = VGA Pin 2
14 = VGA Pin 1
15 = GROUND
16 = Video In
17 & 18 = +5 Volt

Do I need the rest, can I get away with just these 18 pin for the Screen and Touch Screen.

Thanks and looking good

Oh Guru.

jackdon

coucouillu · 10-09-2006, 02:19 PM

Quote: Originally Posted by jackdon

Hi Coucouillu,

It might be hard for me to find the FFC 32 way connector here, I know someone who does Touch Screen and he has agreed to help me solder from the screen panel.

Uh Uh Uh, You didn't say the magic word !

You are too pressed....You don't learn my advises...Now you know what you wait for...

Solder behind the screen is very very difficult!!! That is why i advise to put FFC...Take 40 way connector and 40 way FFC. Just cut 8 pins in one side of the FFC.

SCREEN | original FFC 32 | 40 pins adaptor (2 connectors oposite on a boad) (8 pins unused) | 40 pins FFC on this side (8 pins unused) -----32 pins on this side | original connector on LILLI mainboard

After that be carefull...I was wondering something on the USB pinout and I have verified on my indash unit.

DO NOT CONNECT USB+ connector...Is is powered by the screen itself. when screen is in VGA mode, +5 volts is supplied to the TS USB module. When in TV or Video mode, TS is un powered and so is disabled.

For resume :

Pin ---- Signal
1 & 2 = +12 Volt
3 & 4 = Ground
5 = NON CONNECTED
6 = USB -Data
7 = USB +Data
8 = USB Ground
9 = VGA Pin 6
10 = VGA Pin 14
11 = VGA Pin 13
12 = VGA Pin 3
13 = VGA Pin 2
14 = VGA Pin 1
15 = GROUND
16 = Video In
17 & 18 = +5 Volt

All is enough to have VGA and VIDEO mode.

Be carefull with the connector behind the screen..It is very fragile use your fingers and no tools to open it.

jackdon · 10-09-2006, 07:23 PM

Quote: Originally Posted by coucouillu

You are too pressed....You don't learn my advises...Now you know what you wait for...

Solder behind the screen is very very difficult!!! That is why i advise to put FFC...Take 40 way connector and 40 way FFC. Just cut 8 pins in one side of the FFC.

SCREEN | original FFC 32 | 40 pins adaptor (2 connectors oposite on a boad) (8 pins unused) | 40 pins FFC on this side (8 pins unused) -----32 pins on this side | original connector on LILLI mainboard

After that be carefull...I was wondering something on the USB pinout and I have verified on my indash unit.

DO NOT CONNECT USB+ connector...Is is powered by the screen itself. when screen is in VGA mode, +5 volts is supplied to the TS USB module. When in TV or Video mode, TS is un powered and so is disabled.

For resume :

Pin ---- Signal
1 & 2 = +12 Volt
3 & 4 = Ground
5 = NON CONNECTED
6 = USB -Data
7 = USB +Data
8 = USB Ground
9 = VGA Pin 6
10 = VGA Pin 14
11 = VGA Pin 13
12 = VGA Pin 3
13 = VGA Pin 2
14 = VGA Pin 1
15 = GROUND
16 = Video In
17 & 18 = +5 Volt

All is enough to have VGA and VIDEO mode.

Be carefull with the connector behind the screen..It is very fragile use your fingers and no tools to open it.

WOW thanks for checking thru' the pin, if not I would have also connected the pin 5 base on the initial pin out diagram.

OK will take your advise seriously, I know do you know the pitch of the FFC connector as I may need to order online. Most of the shop here do not carry 32 or even 40 pin. We are rather backward here in Malaysia.

Thanks again for your advise

Oh Guru.

Regards
jackdon

jackdon · 10-10-2006, 07:40 PM

Hi coucouillu,

Yup I took a look at the back of the screen and it is real small

. The FFC socket on the screen is a 24 pin with 0.5mm pitch. I have a tech guy to work on it as it was beyond my simple soldering skill

. He will try to get a 24 pin FFC 0.5 cable and a socket if it is available else we will do the delicate job with a fine soldering bit. My plan was to make a small PCB board with the VGA and power connector place at the back of the screen metal.

I have to rush because I will be away for a week for my annual vacation in 10 days and my car would be with the installer to do the modifying job on the dash during that time. So there is a reason for my rush.

Well if all goes well, I should be able to send you the HU and the ribbon cable too. Just message your full address and I will let you know when it is ship.

jackdon.

jackdon · 10-18-2006, 09:48 AM

Hi coucouillu,

Update, did the soldering job. The tech guy had to trace from the ribbon connector to another point. Well we got it working.... touch screen and the VGA was working fine. We got it working then applied hot glue to keep them in place.

BUT....

when we tried to stuff the cable and the PCB board and replace the back panel, that process applied some pressure on the VGA screen. He ended with no VGA signal. Tried that a couple of times and now we have the White Screen

. Now we think the other ribbon cable is not seated properly and tried a couple of time. Well we are still trying. Our problem is not with the soldering but when pressure was applied to the board it cause something to be loose. If you look at the picture below he tried to put the PCB on top of where the green insulation is.

Any ideas, he is now retracing and all points check out. It might be a different issue because I had that White Screen problem once before the indash gear broke down.

jackdon

coucouillu · 10-18-2006, 01:23 PM

Hi jackdon,

First i can say is that you didn't have took my advises about not directly solder on main PCB!!!...

You seem to be sure of your solderings...So we will try to find where the problem come from.

1) First of all have you ever unmount the white ribbon ?
Because I can see your white ribbon twisted but it should not!

2) If yes, try to unmount and mount again the white ribbon.

!!!!!ATTENTION!!!!!!
BE VERY CARREFULL WITH CONNECTOR B. EVERY ONE BRAKE IT THE FIRST TIME.
I SHOW YOU HOW TO DO (blue element means mobil part of the connector, this part should be black colored for connector A and white colored for connector B)
!!!!!ATTENTION!!!!!!

3) What is the date on the PCB ?

For next time, please make better pictures...It is very hard to see anythig...

jackdon · 10-19-2006, 01:54 AM

Hi coucouillu,

We had tried everything and NO CAN DO

looks like I have to go to plan B.

Plan B.

I re connect the ribbon cable until I see the no vga signal and able to use the source button to switch to VGA, Video1, Video2, TV. After that I reassemble back to the Heat Unit. I am without the VGA Cable as we had already cut it

we also lost that white connector. Anyway now I am able to power up the HU and also the screen. I am able to now to do below

1. Able to see VGAMODE, NO VGA SIGNAL, VIDEO1 & 2,TV
2. On the TV mode I am able to bring up the OSD. The OSD can only be display if there is signal. So I guess the LCD is working with the existing Ribbon cable.

Am I OK for now ??

oh guru. I will order the 40 way FFC 1mm pitch connector from the net and will do that portion after I come back from my holiday. So I can only send the HU to you in about 3 weeks time.

Well do you think I am ok for now.

jackdon <--- more like a jackass for now

coucouillu · 10-20-2006, 04:46 AM

Hi,

Quote: Originally Posted by jackdon

2. On the TV mode I am able to bring up the OSD. The OSD can only be display if there is signal. So I guess the LCD is working with the existing Ribbon cable.

You re right.

OK so the White screen problem is solced....

But I can not understand why you still need the HU...

For your tests, you just need from PC power supply :

+12V (pins 1 & 2)
+5V (pins 17 & 18)
GND (pins 3 & 4)

and from a video source :

+ Signal Video (pin 16)
Video GND (pin 15)

Pins 3, 4 and 15 sould be connected together and you have to be on Video 1 mode on your screen.

That is what I done for my own tests :

I would love make you all the job but I am in France...It will cost you a lot with shipping...

jackdon · 10-20-2006, 05:49 AM

Coucouillu,

You see, the soldering job done was OK but the cable use was fragile. The tech guy panic and gave up. Well I took over the cables was too small so I cut and dismantle gently.

Well with my limited knowledge I had no choice but to use the HU to test. I solder all the point back to the connector and did a test with my meter and all the points check out. Power up the HU and the screen still slide out but won't flip up. I flip it up manually then manually trigger the switch to turn on the monitor. Hook up to my PC and still gets no VGA signal. I did try again to reseat the ribbon cable.

But still no VGA signal but there seems to be a little activity on the screen it flicker a bit and at times I get a brief moment of white background with somekind of wierd picture. Then back to no VGA signal. I did some search and it seems this is a pretty common problem and most of the time it is the ribbon cable. So I had place an order with Farnel for a 40 way FFC cable same sideup and 21cm long. So lets see in 2 weeks time.

Anyway I will be away tomorrow for a week. Thanks for your help so far. Do you think there is still hope for this screen.

jackdon.

airbon · 03-18-2007, 06:30 PM

Hi Jackdon,
HOw is it going with your screen now? Did u manage to get it working?

coucouillu · 10-23-2007, 03:49 PM

Hi all,

I can't find 32 ways or more (40 would be OK) FFC ZIF connector in Europe.

Someone could help?

coucouillu · 10-26-2007, 02:35 AM

Please could someone help.

I am working on HALF DIN Lilliput indash screen.

I need this connector.