I have PN-50850 with the latest firmware, 1012.3. I was able to get the monitor to turn off, but not on. The TV was in Hotel mode, but the RS-232 was set to UART. Other options for 232 were logic and debug. I didn't have the 232 setting that the diagram mentioned, like hotel. The power save feature was off. The off command that worked was:
\x08\x22\x00\x00\x00\x01\x2C

I tried the following for power on:
\x08\x22\x00\x00\x00\x02\x2D
\x08\x22\x00\x00\x00\x00\x2B

Try
08 22 00 00 00 02 D4

I've just spent some time going through all of the codes with my 650 LCD. I have all of the following working:

You will notice I can't get the TV to turn on when it's off. Any idea why?



Power Toggle : "$08,$22,$00,$00,$00,$00,$d6" *NOT WORKING WITH TV OFF*
Power On : "$08,$22,$00,$00,$00,$02,$d4" *NOT WORKING WITH TV OFF*
Power Off : "$08,$22,$00,$00,$00,$01,$d5"

Volume Up : "$08,$22,$01,$00,$01,$00,$d4"
Volume Down : "$08,$22,$01,$00,$02,$00,$d3"
Mute Toggle : "$08,$22,$02,$00,$00,$00,$d4"
Speaker On : "$08,$22,$0c,$06,$00,$00,$c4"
Speaker Off : "$08,$22,$0c,$06,$00,$01,$c3"

HDMI 1 : "$08,$22,$0a,$00,$05,$00,$c7"
HDMI 2 : "$08,$22,$02,$00,$00,$00,$d4"
HDMI 3 : "$08,$22,$0a,$00,$05,$02,$c5"
HDMI 4 : "$08,$22,$0a,$00,$05,$03,$c4" *NOT WORKING*
VGA : "$08,$22,$0a,$00,$04,$00,$c8"
Component 1 : "$08,$22,$0a,$00,$03,$00,$c9"
Component 2 : "$08,$22,$0a,$00,$03,$01,$c8"
A\V 1 : "$08,$22,$0a,$00,$01,$00,$cb"
A\V 2 : "$08,$22,$0a,$00,$01,$01,$ca"
S-Video : "$08,$22,$0a,$00,$02,$00,$ca"
TV Tuner : "$08,$22,$0a,$00,$00,$00,$cc"

16x9 Aspect : "$08,$22,$0b,$0a,$01,$00,$c0"
Zoom 1 Aspect : "$08,$22,$0b,$0a,$01,$01,$bf"
Zoom 2 Aspect : "$08,$22,$0b,$0a,$01,$02,$be"
Wide Fit : "$08,$22,$0b,$0a,$01,$03,$bd"
4x3 Aspect : "$08,$22,$0b,$0a,$01,$04,$bc"
Just Scan : "$08,$22,$0b,$0a,$01,$05,$bb"
Wide TV (PC) : "$08,$22,$0b,$0a,$01,$06,$ba"
Wide PC (PC) : "$08,$22,$0b,$0a,$01,$07,$b9"

I've now looked through all of the Service Menu for the suggested "Energy Star" setting, but haven't found it. I did find an energy saver setting in the main menu for the TV, but it only affects the brightness of the backlight, not the TV's behavior when the power is off. Hopefully there's some way we can resolve this, otherwise why would Samsung even provide a Power On or Power Toggle Code?

Who can help? thanks so much!

You made it as far as i did back in 2007 when i posted this :

[Link: remotecentral.com]

Darn, that's a bummer. Everything else with RS-232 works so well with my AMX, it's hard to believe that this is thing that I'd get stuck on. I would say let's just use IR for turning the TV back on, but then you have to wonder why not just use IR for everything.

One idea I had was to switch the TV into it's VGA input which automatically goes to sleep (pretty much right away) if there's no signal (like a computer monitor if the computer is not on). The TV's red led just flashes. I'm going to measure it with a current meter to see how much it draws. If it's pretty much the same current draw as the TV being completely off, I might just go down this route. Even if I plan to use a VGA source, I could just tell the VGA switcher to switch to an unused input when the power-off macro runs to make sure the TV sees no input.

Anyone tried this?

bwhiteford,

Yes, Samsung sucks for this very reason.

Your VGA source thing could have 2 potential glitches.

Does the TV go from sleep mode to power down mode after an extended period of time? I don't do much with samsung so I don't know.

Not with samsung mind you but I've done the open input signal on vga before and some vga switchers will send a no signal present signal to the monitor defeating your idea. Other switchers somehow manage to keep the input "hot" even if they don't give you a no input signal on the display.

AVXpressions,
Very valid points. I don't believe the Sammy goes to power down at any point as I've left in the sleep mode overnight before. I suppose it's possible that it does it after several nights, but i'm not sure. I also thought of another glitch is an issue. If the TV were to lose power for any reason (power outage, accidental disconnection, etc.) it would boot back up in stand by, and thus the AMX would not be able to turn it on.

As far as your VGA switcher comments, I agree and I suppose it would depend on the switcher. The only thing you could do there would be to physically power down the switcher when the system is not in use via a relay or something.

Thanks very much for your thoughts everyone. Like I say, it's a shame that this is the remaining piece. And while I agree that Samsung never promised any kind of control like this, I think integrators would be much more likely to turn to Samsung if there was a straightforward method for control via RS-232. I've installed LG's over Samsungs solely because of the simple, straightforward DB9 on the back...ready to go.

bwhiteford,

I just tried out your RS-232 Codes, and the problem is with your checksum. The on command should be:

$08,$22,$00,$00,$00,$02,$d6

not d4 as you had listed.

Thanks for posting these codes! I have been trying to find Samsung Ex-Link codes for a long time. Other than that checksum, they seem to work

Igorp,
Did the on command work for you with that changed checksum?

Also, I might have to disagree with your checksum correction. It does not compute, and the TV also does not respond with a success packet when the d6 checksum is used. The d4 checksum does cause it to respond properly when it is already on.

I just started exploring this option today. So I need to make a DB-9 to Ex-Link cable and then I use what, Hyper-terminal, to talk to the TV? I just type "$08,$22,$01,$00,$01,$00,$d4" in hyper-terminal to turn up the volume?

Where did you find those codes?

-Ryan

Any of you guys get this working on a 2009 Samsung plasma (pn58b650, firmware 1017)? I can't get a response from the TV. I've tried 9600,8,none,1,none and 115200 baud. Hotel mode is on, RS232 is UART. I'm using hyperterminal with the commands shown above.

Any help would be greatly appreciated!

If Power ON---- IT WON'T WORK!!!!!!!!!!!!!!!!!!!!!!!!!!

and since it won't work does it really matter if you get anything else to work or not? Just use IR since you have to have it for power on anyways.

I don't need it for power-on. Just power-off and source selection. My media center remote has a button I map for power on/off. I'd like to add some menu options to my windows media center for controlling some other functions though.