Home Theater Forum and Systems banner

1 - 4 of 4 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
Hey guys, brand new to the forum...I apologize if I'm posting this in the wrong area or violating any rules here. I have a Samsung 50 in DLP model HLR5067WX/XAA. I took it to a repair shop and they told me that the digital board was what was causing it not to turn on. So, rather than pay them around $500 to replace it, I tracked down a used board that was pulled from a working TV for $100. I replaced it myself, and the tv started right up. (BP94-01858A was the model board I bought) The picture was upside down when the tv turned on, but I fixed that by getting in to the service menu (Mute +1+8+2+PWR ON) and flipping both the V-flip and H-flip options. I had nothing hooked up at the time, and the tv was displaying a blue screen reading (no signal or weak signal), so I thought everything was fine. Well, after hooking up cable the picture is AWFUL. It is scrambled everywhere with small white and purple horizontal lines going through. I also hooked up a Wii system just to test an AV input. Same story. The strange thing is that the high def channels come in crystal clear. (For example, channel 10 in standard definition has the bad picture, then channel 10 - 1 in high def is perfect.) I read a samsung service bulletin (pdf file) that I unfortunately can't post here as a new member.
One procedure in this guide talks about setting the light engine to match the new board in service mode, but for some reason I dont have the "ENGINE SELECT" parameter available in my service menu. I also don't have the DMD digital parameter that it talks about. I know this guide applies to my model as it lists HLRxx67 models. I called Samsung and they just want to send a tech out, and I don't want to spend the money I was saving anyway. Does anyone have an idea as to how to fix this? Could I simply just have hooked something up wrong here? Thanks to all in advance.

edit:
Straight from the guide:
When changing a Digital PCB on one of the
HLRxx67 or HLRxx66 series DLPs the board has to be set to match the engine type in
the unit.

Unfortunately, as far as I can tell the options to do this simply aren't there in my service mode menu.

Thanks again.
 

·
Plain ole user
Joined
·
11,121 Posts
Swapping boards, particularly in Samsungs is problematic. There is, unfortunately, not good documentation regarding the various versions of the boards and software. If the board is physically the same and just has different programming, it might be possible to read the data from one memory chip and load it to another, but you would need to be skilled with the bus technology and the specific devices, and have the equipment and software to do it. We have cloned eeproms for more primitive designs in the past, but everything was on a simple, inexpensive memory chip. These sets likely have much of the memory integrated into larger, more complex devices.
 

·
Registered
Joined
·
13 Posts
Same situation for me. Although after some work on a cable issue, I can get the local channels without issue. All of the cable channels the picture is scrambled. Also I only get the signals when hooked to the lower (air) coax input. The upper (cable) input does not read anything. I guess this sounds like a board compatibility issue.
 

·
Registered
Joined
·
2 Posts
Discussion Starter #4
Thanks for the reply lcaillo. Turns out it came down to a loose connection, which I discovered after opening everything up again. It seemed like it had to come down to that as the issue made no sense. So, everything works now and I was able to save about $350 after all is said and done :yay:. Coolbrz, I think you might be right about the compatibility issue. What is the model of your TV/model digital board you used as your replacement? I had to do a good amount of research to get mine working again, so maybe I could help.
 
1 - 4 of 4 Posts
Top