Newbie here and hoping to learn some things and also contribute what I can.
My daughter just moved out on her own and her grandmother gave my daughter her old 55"DLP TV (~8 years old) for her and her roommate. Very nice first TV for a first TV.
The TV was originally grandma's and always worked great. I changed the lamp a few years ago, but other than that, the TV has been great. The kid used the TV for about 10 days, and then calls me to say it won't show any channels. Basically, the LAMP led blinks, and no picture is showing. I went over and noticed the lamp was on, but figured it was probably getting old so I replaced the lamp with a new OEMstyle Phillips lamp. The issue continued. Last night I pulled the back cover off and vacuumed up any dust, and took a can of air and blew all the pcb's; trying and dislodge any possible dust causing an issue. Still no picture. Since the cover was off, and the little safety toggle switch was taped down, I figured I would power the TV on and watch to see what was working and what was not. Both fans run, and are moving smoothly. The lamp comes on to full brightness. Since we cannot find the original remote, I can only power the TV on & off via the front push button. I still could not get a picture; only the blinking LAMP led. Then, the TV shuts off after a few minutes and goes back into Standby mode. After staring at the internals of the TV for an hour, and looking for something that looked damaged or burnt, I unplugged the TV for a bit and then plugged it back in. This time I heard sort of a buzzing sound coming from deep inside the TV. Maybe the color wheel? Maybe it wasn't spinning before? I unplugged the TV again and plugged it back in. This time I didn't hear the sound. I know this is bad to power cycle the TV like this, but I wanted to repeat that scenario. After the fifth time, I heard the buzzing sound again, and about 30 seconds later.....BAM the picture came back on. I the kid watched TV until late last night, and then turned the TV off.
Well, this morning she went to turn the TV back on and back to the same problem. No picture. Of course, I am not there to look at the issue, but the symptoms are the same.
Any ideas? Could it be the filter wheel is not getting the signal to start? Or could there be something else not starting up? I work on all sorts of electro-mechanical stuff at work, so I want to believe I can fix this without throwing too much money at it. Plus, I would guess most of the boards are probably obsolete by now???
Thanks for your help in advance....