lg driver display board problem

[christos]

hello , i have an lg flatron l204wt that has a dead display driver board




the IC602 is missing from the board,i took it off

i found this one in ebay that is the same one
http://www.ebay.com/itm/LG-L194WT-LCD-Monitor-Driver-Controller-Board-1440-900-LG-D13-/200868867956?pt=US_Laptop_Screens_LCD_Panels&hash=item2ec4b7af74

but its for 19'' as is says and its the exact same board.
will it work if i buy it?

[Simon]

how big is yours ? if the resolution of yours and the one this board is sold for is the same it should work, but I'm no expert.

[christos]

mine is 20''

[Simon]

what about resolution, the key thing will be amount of pixels to control. I have a 17" and 19" monitor, but both are 1440x900 pixels, the 19" one will have slightly bigger pixels but same amount to control for the control board.

[christos]

if you see the back of the board..youll se  lg l194/l204w
this means that it can handle my monitor too cuz i found another lg board that says exact the same thing but for 15,17 and 19'' displays

so i think it will work for my monitor the lg l204wt

the 19'' lg display have the same board the lg 194wt
ill buy it and hope this will work

the ressolution is 1680x1050

[Simon]

it sounds like a match then, providing the 2 have the same resolution.

[sunnyhighway]

I noticed some differences which I highlighted.

Without schematics it's hard to tell if it matters.

[christos]

can you tell me?

[christos]

here the schematics
 
l204w  http://savedonthe.net/download/565/lg_l204wt-s-bfq.html

l194w http://savedonthe.net/download/576/L194-204WT-WTM-WTX-WTQ-__Q_EN.html

[sunnyhighway]

can you tell me?

Looks like it might NOT work right out of the box. (perhaps even do some damage if you try, but hey.... I'm no expert on this)

You might want to look at the service manual first.
http://elektrotanya.com/lg_flatron_l204wt_lm62b_sm.pdf/download.html   (wait half a minute or so before the download link appears in the description below the previeuw)

Page 24 contains the schematics of the scaler board and describes the differences between them.


EDIT: fixed stupid omission of the word not

[wraper]

can you tell me?

There is a place for to different type of connector. Seems that all pads are connected in parallel. So they just solder either type of it at the factory. If your monitor do not use this connector, then it does not matter at all. But I suppose it is for button board connection, if it is the case, then just desolder it from the faulty buard and solder it to the new one. No need to remove second connector from the new board.

[wraper]

Resolution is also different, so it won't work out of the box without reprogramming the firmware in IC503, likely cal and other data in eeprom IC502 and 2 EDID eeproms - IC701, IC702.
You can use this board instead (not 100% guaranteed) if unable to find the right one http://www.ebay.com/itm/LG-L227WT-L207WT-L227WTG-LCD-Monitor-Controller-Board-1680-1050-LG-D33-/181066748524?pt=US_Laptop_Screens_LCD_Panels&hash=item2a286b526c
The same thing with the connector.

[sunnyhighway]

btw, R502 (the big trough-hole one) seems to have 1 broken leg.

[christos]

i broke the leg of the r502

the problem of this board is the main chip..something connects the ground to the 5v rail..thats why i broke the leg

[christos]

so ,if i buy one with the same resolution with mine,will it work?

[Stonent]

Check shopjimmy.com and see what board part number he has for your TV.

[christos]

ive got a new board ,,its a universal so it have only 6 input pins to power it up

1:GND
2:GND
3:5V
4:5V
5:ADJ
6:BLON

 and my power board has 11 pins

1.  15V
2.  15V
3.  GND
4.  GND
5.  5V
6.  5V
7.  GND
8.  NC <- not connected
9.  ON         [(INVON) on the driver board]
10.  A/D      [ DIM (DIMADJ) on the driver board ]
11. P/D       [ M/S (LAMPADJ) on the driver board ]



where goes the BLON and ADJ to the power board?
the driver board was for my 22'' display but i broke the screen 1 week ago
so i want to test if this will work on my 20'' lg display