Sony KDL-55hx729 RU board?

[freakaftr8]

This is a TV I picked up a while ago that had a back lighting problem. turned out to be the LED backlight driver board well I replaced that no problems. but I'm having an issue trying to pin out the RU board. this is a small board that connects to the back of the TVon the mainboard. I don't know what its function is but I believe it has something to do with the bluetooth function for the 3d glasses on the black plastic cover it is labeled remote. It has a db9 connector along with a headphone jack that's black.
this board was all mangled up and the wire harness was cut its a 6-pin harness. I had to order another board and it's hard to find. Upon getting the board I had mocked up a new harness harvested from a nother sony tv. Upon connecting the board back to the main board it causes the remote function not to work. So basically the remote control will not operate the TV. The TV still works with the buttons on the side no problems but it physically locks up the remote control function. So I thought it was an issue with the board so I ordered another RU board. I get the same effect. Does anybody have this style TV or similar that uses this bored could possibly give me the pinout configuration of the 6 Pin harness. or if somebody has the wiring schematic could tell me if I have the pinouts proper. I just ran hpen in the Loom the same way as a direct connection but maybe there is a cross wire somewhere in the Loom that I'm not familiar with. Thanks

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

I was doing a search and noticed that some of the BATV mainboards do not use this RU board. on the mzinboard there already is a remote jack, but on this RU board, there is also a remote jack. Why does the TV need two? I dunno. But also on this RU board, there appears to be dome odd looking pickup sensor of some type, but the board in encased in a plastic frame, so Im thinking it has bluetooth capability. Aldo there appears to be a round sensor on it as well, kind of looks like an LED but that doesnt make sense. As well as a DB9 male jack on it as well.

Basically I mocked up a cable and am unsure if I have the pinouts proper. No remote control function if it is connected. Cannot tell if Bluetooth is working as I do not have the 3D glasses.

Sony BATV board number A-1825-544-A
Sony RU board number A-1820-418-A


http://i845.photobucket.com/albums/a...ps477ff1ec.png

http://i845.photobucket.com/albums/a...ps7c38248b.png

[tom66]

Re: Sony KDL-55hx729 RU board?

My guess would be RS232 for control/home theatre automation. For example those connections allow a computer to turn a TV on from standby, and for a home theatre amp to mute TV speakers, etc. Also used in larger set ups to coordinate scaling and image processing between displays.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

Got it. I've gotta have a wire pattern wrong or something I mean when I got this TV this RU board was absolutely destroyed but I try to make sense of it but the harnesses Was cut so now all I think I have a problem with is trying to find out the proper configuration for the pInout. like I said with this board connected I have no TV remote control function at all but the TV still works if I use the side panel buttons

[tom66]

Re: Sony KDL-55hx729 RU board?

I figure that the jack on the side is remote control input via wire for an IR blaster/receiver. That is optional, but will be passing the IR signal from the remote receiver to the main board - it will be a simple interrupt switch, like used on headphone jacks.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

Ok thanks. I figured it had something to do with a multi configuration setup. Just need to find out why it's blocking the IR to the main pickup.

[tom66]

Re: Sony KDL-55hx729 RU board?

It has a switch in it. Switch selects between R/C input and external.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

And if two wires are crossed then that would enable the IR block if nothing is connected into the port instead of disable. So if that's the case I would need to find out the proper wiring configuration on the 6 Pin harness

[tom66]

Re: Sony KDL-55hx729 RU board?

You could also look at the connections closely. Most likely it'll be obvious how it works (one input, one output to the jack.)

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

I did that they're all proper I don't think it's a wiring issue now. I tried reversing the polarity on all the wire you know from right to left To right and it shut down the TV and it took 10 minutes of being a plug for the red light come back on so obviously that wasn't right can fix it. number 6 appears To be a ground pin number 6 on main board also appears to be a ground also

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

very interesting. This is a sealed bored with a black box around it but yet it has an infrared sensorand a bluetooth sensor from what I can gather on the Internet. I know that this board makes the 3d glasses communicate with the TV but I still can't seem to track down why I get no infrared communication between the remote and the IR receiver on the front of the set with this board plugged in. Unplug no problem. MYwiring harness I know is correct now. does anybody know how to search in the service menu on these newer Sony's possibly a factory reset or something to that tune.? I can get into the service menu no problem but I don't know what I'm doing in there unfortunately. A lot has changed since the Trinitron lol.I'm starting to thInk that it may be somebody had got into the service menu at one point and possibly changed something.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

OK just received the glasses in the mail and the 3d works flawlessly. Even with the RU board disconnected. So if 3D IR works and wireless internet works whet the heck is the RU board doing and why do I need it beside the external remote control feature that I'll never use?

[tom66]

Re: Sony KDL-55hx729 RU board?

It's for professional monitor setups. And advanced HTPC. If you're just keeping it for yourself, most likely you don't need it. 99% of people won't use it.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

Good to know. Thanks Tom. the built in DLNA interface is suitable enough for me. I'm just going to keep the module out of the tv I guess.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

Well this tv took a dump. I decided to keep it and I hung it on the wall in my bedroom. Well my wife and I are watching a movie last night and I shut it off with a remote and notice that the red stand by light wasn't on now it's completely dead I tried unplugging it a bunch of times try powering it up nothing. I can tell it's getting voltage because you can see a little spark in the plug the dark.

is there a known issue with these problems in the led sets? before I pull it apart Im automatically assuming it's a mainboard problem based upon how many power supplies are readily available but all mainboard seem to be sold out. I'm going to look into it tonight but I'm pretty sure I'm getting stand by Voltage

[tom66]

Re: Sony KDL-55hx729 RU board?

If you are getting standby, you should have a power light. Main board is a common fault on new TVs, it's crazy how many fail.

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

Well I pulled the back and it powered up. Something to do with the back being on

[tw2005]

Re: Sony KDL-55hx729 RU board?

Schematic.


pins 4 & 5 have my curiosity. looks like pin 4 at RU is not connected anywhere. Wonder if they cross?

[freakaftr8]

Re: Sony KDL-55hx729 RU board?

Thanks tw2005. Something is amiss with the power supply this k a cold solder joint

[tw2005]

Re: Sony KDL-55hx729 RU board?

Thanks tw2005. Something is amiss with the power supply this k a cold solder joint

I have not got the foggiest with Sony, is the RU still an issue? Just did an edit. Is the cable a straight through or maybe a cross at pins 4,5?


a quote from the pub.

Control4
Enables extended command of the Control4 controller using REMOTE (RS232C, D-sub 9 pin).
If [Control4] is set to [On], “Control for HDMI” (“BRAVIA” Sync) is not available.

Whatever that means?