I am trying to setup RS232 control over a new ME55A Samsung display. I have tried every combination of cabling and codes I can come up with but the display does not respond. The unique thing about this setup is the display uses a mini 3.5 jack to DB9 for it's RS232C connection. Also the TV documentation keeps mentioning it's MDC program for remote controlling it when referencing RS232. Is this TV not capable of basic RS232 control? Am I missing something else?
Here is the example of how to com e up with the code (example is actually the code I need/use too):
Have you tried using a null modem adapter inline? I've seen this before on these DB-9 to 2.5 mm jacks. There is a male to male null modem adapter you can put inline and it's cheap. I had to do this to some panasonic consumer displays to get them to work.
Yea, I've tried multiple adapters and cables, including null modem adapters and cables. When I did all our LG's a couple years ago I found different sizes wanted different cable types to work. This one really has me stumped though. I think my next step is to install the MDC software for the TV and make sure Samsungs own software is working on it. Maybe that will shed some light on how the RS232 works on that TV.
Figured it out. After using an ohm meter on every single cable and adapter I had (they were all correct), I found that the OEM supplied 3.5mm to db9 adapter is not pinned as the documentation states it needs. I hacked up a couple old cables to make my own makeshift 3.5mm to db9 cable and now it is working great. Now I just need to figure out all the other codes I will need to run it.
I found there are acutally a fair amount of "off the shelf" cables that are pinned the same way. I recently replaced my home made one with one off the shelf to keep it cleaner behind the TV. Hope that helps.
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