Re: Samsung 591S Clolor Problem

there are 3 ic in the RGB board:
1. LM1236 (RGB Preamplifier)
2. LM2470 (Monolithic Triple 7.0 ns CRT Driver)
3. LM2480 (80V Triple Bias Clamp)

Re: Samsung 591S Clolor Problem

Screen shot :












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Re: Samsung 591S Clolor Problem

Sori, maybe we have some misconception, i mean that i'm plug the Blue Cable to the red or green pin ( at RGB Board ) and get picture clearly. Plug the green or red cable to the blue pin at RGB board and the result is BLUE SCREEN. I have been try this monitor with others computer and the result is same. So my prediction that the problem is at RGB board, please you all professional can tell me how repair the RGB board, what should i replace? Thanks...

Re: Samsung 591S Clolor Problem

Thanks for all. I'm use D-SUB 15 pin VGA connector, but not BNC connector to the RGB, it's 6 pin in 1 socket to RGB( i don't know what type of this connector ). This monitor use LB15V MAIN and RGB Board, i have the Schematic Diagram. Like Mr Plainbill suggestion, i plug the Blue Cable to the red or green pin and get picture clearly. Plug the green or red cable to the blue pin and the result is BLUE SCREEN. The VGA cable is good, i have checked it. The CRT is good because when entering Setting Menu from monitor, the color is perfect.

Re: Samsung 591S Clolor Problem

Thanks for all. I'm use D-SUB 15 pin VGA connector, but not BNC connector to the RGB. I have plug the Blue Cable to the red or green pin and get picture clearly. Plug the green or red cable to the BLUE pin and the result is BLUE SCREEN. The VGA cable is good, i have checked it.

Hi all, first, sorry for poor english.
I have samsung 591s color problem. when i turn ON ( VGA cable disconnected ) it show Self test mode and the color is ok. VGA card is OK, VGA cable is OK, i check all component in the RGB ( expect IC because i not know how ) and found nothing problem.

Some illustration : turn on my computer and :
1) I unplug the RGB cable from the RGB board and it's show black screen.
2) Plug the red cable to RGB board and it show picture clearly with red color dominan
3) Unplug red cable, and Plug green cable to RGB board, it show...