I have a Samsung DLP HLR4266W that has worked fine while under warranty. It is three years old and now, it's just not working for me!
To begin, the lamp did need replacing as the screen started to go dim. Before I could replace the lamp, the color wheel started with the banshee noise, but the TV still worked. So, I purchased both the color wheel as well as the lamp. I had read a lot of posts from different places and felt fairly comfortable about doing replacing these parts. After they were installed, the tv was powered back on, but the colors were reversed! I had read about the CN810 jumper and that to get the colors back correctly, this jumper had to be removed. So, we tore back into the TV and had a hard time finding just where this jumper was. We finally found it but it was behind the heat-sink fan and I believe it the board we located it on was the DMD board. There was a spring loaded clip that was difficult to remove (required a special tool), but we managed to get it off, removed the jumper, and put everything back. The TV then worked just fine for all of 2 days! When it quit working, ALL the lights came on, TEMP, STANDBY, LAMP and would flash 3 times and power down, flash 3 times, power down. There was no click that indicated the ballast was working, so we assumed (ugh, I hate that word) that the ballast needed replacing. I ordered the ballast, received it and installed it and again, put everything back. Ppwered the TV back on and now, the LAMP light is flashing, but not the TEMP and STANDBY, and it is trying to turn on, but won't. I had read where it could be a screw (and yes, for some reason I have an extra screw that I shouldn't have) or that it could be my light tunnel. I also read that if the light tunnel isn't properly positioned, these could be symptomatic of that?
I hate that this has happened as even though I had the noise and dim picture, the TV did work and I'm not a TV tech, but have worked on electronic equipment (computers/printers) so I do have an understanding of boards, etc. Needless to say, I am extremely unhappy with my TV as I am now watching a 20" that just doesn't cut it for me. I did also call Samsung and the tech did say it seemed it could be a collapsed light tunnel, but I don't understand what is meant by collapsed. I've looked inside again although I didn't take it down to the color wheel level (my next step I suppose since maybe the screw is causing a problem!) and can't see that anything looks any different. Is this something I could visibly see - a collapsed light tunnel?
I couldn't help but see that numerous other Samsung DLP models seem to share this similar scenario and it seems to me that this is more a design issue than true failure..I would really appreciate ANY help that ANYONE can provide! Hoping to hear from someone...............