New Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W

We have a Mitsubishi WD73734 HDTV that had thousands of stars and some black dots on the screen. I read reviews for over three months, watched the videos, and monitored all of the prices trying to convince myself that a new chip would really work in our tv. I opened up our TV following what I had seen on the videos. It took about 30 minutes to disassemble. I found we had a 1910-6103W chip. I remembered reading that some folks that had circuit boards with those chips found the new chips were not compatible with their circuit boards resulting screens with black stripes. I studied some more (another four months) trying to convince myself that installing a new chip would work. When this chip finally showed on Amazon Prime at a price similar to what I had been watching on Ebay, I felt I had little to no risk, so I made the leap and purchased a new chip from Amazon Prime.The new chip was a 1910-6143W. I had not reassembled the light engine and the TV since I took it apart four months before to see what chip was in it. I re-watched the videos to refresh my memory of how to put the light engine and the tv back together. Unfortunately I did not start the installation of the new chip until after 10 pm.I had also read that the cause of the chip failure was usually heat so I also bought some arctic silver from Amazon to put between the chip and the heat sink for the chip. We reassembled everything including the back of the tv. We plugged the tv in and the light in the front would only flash red. the TV wouldn't turn on. So we took it apart, wiped off the arctic silver and re-assembled it. No change. It was 1 am and not the time to be troubleshooting why the TV wasn't working.Frustrated I waited a couple of days and decided to disassemble the light engine and put the original chip back in to make sure it was the new chip causing the issue. 75% of the way through the disassembly I found two cables (one of them a flex cable) that had not been re-attached to the back side of the circuit board. I re-attached them. reassembled the light engine and the tv. Plugged in power. and this time the light in the front flashed yellow. It still wouldn't power on. I rechecked the cables and found one connector to the front of the circuit board was not properly connected. After reconnecting it, I turned the tv on and the screen lit up with five black stripes and four white stripes with pepper in them. This was just like what I had read about replacing the 1910-6103W with a newer chip that wasn't compatible with the board. So I went on line and requested a refund for my new chip assuming it wasn't a valid replacement. I printed off the return labels.I decided to dissemble the tv one more time and put the old chip in to make sure the problem was really with the new chip. When I removed the circuit board with the new chip on it, a strange thing happened..the chip fell right off the board. The chip had not been properly locked on the board. I properly placed and locked the chip on the board and reassembled the tv. We were becoming very proficient at disassembly and reassembly. We plugged the tv in; this time we had green flashing lights on the the front of the tv; we turned it on and we had a bright blue screen with absolutely no bars, black stripes or stars..it was perfect.But being practiced we took the tv partially apart one more time to put the arctic silver on the heat sink where it makes contact with the chip. We reassembled the tv for the last time and connected up the Roku we bought at Amazon and we had the clearest, crispest 1080P picture we had ever seen with this tv..even better than with the original chip..So if your screen doesn't light up, or you get black stripes, make sure your cables are connected, and your chip is properly locked in position.

Although I had actually build\t a 25" Heathkit color TV back in the 1970's, I had not done much with electronics in many years. But I still decided to give this a try so that I would not have to replace my 7 yr old Samsung HL67A750 television that I dearly loved until those dreaded white and black spots started appearing about 3 weeks ago. Started off with just one white dot and had gone up to 10 white ones and at least that many black ones by the time I discovered that an owner can semi-easily replace the defective part.New DLP chip arrived a day earlier than estimated. Took about 2 hours to install into my TV including a good vacuuming and cleaning. Having done this, I think I could do it in a little over an hour if I had to do it again, but I went very slowly the first time to be extra careful. Chip itself installed easily and now all my white and black dots on the screen are GONE. Picture even seems brighter and clearer but that might just be my perception. The heat sink for the DLP chip had dried-out heat sink compound so I scraped that off with my fingernail (it was kind of rubbery and came off easily) and replaced it with new compound that I also got from Amazon.The Samsung HL67A750 model is an LED projection TV and while looking at Youtube for videos on how to replace the DLP chip, I ran across one where the Red LED was replaced. In watching that one, the video showed how much dust was in the cooling fins for the 3 LEDs so I decided to vacuum those, too, as long as I was in the same general area of the TV. I was shocked at how much dust had built-up on the cooling fins and surprised that one or more of my LEDs had never gone bad from overheating. The cooling fins for my RED LED were totally clogged with dust and the other two were not far behind. I thought about disassembling the LED heat sinks and replacing the compound on those, too, but decided against it as I was getting anxious to see if the new DLP chip fixed my display problem.I vacuumed the entire inside of the TV, cleaned and lubed the cooling fans, re-assembled everything and got ready for the big 'power on' test. Hit POWER on the remote and heard the TV click (as it should) and then nothing but blinking green and red lights on the front of the TV. CRAP! Took the back off of the TV and started looking around and found one connector that had pulled just a tiny bit loose when I was putting the TV back together. Re-seated the cable, powered the TV back up and PRESTO....it looks great! Worst part for me was actually removing the board that the DLP chip mounts to. Took me about 15 minutes to figure it all out and remove/replace it but now that I know how it is done, it won't take nearly so long if I have to do it again.Now, if I can get another 3 to 5 years out of this TV, maybe the price of the newer 4K models will be a lot better by then! ;)