Got my new light engine installed this afternoon. Had numerous white dots from a DMD chip.
Started to get the white dots just before my extended warranty ran out. I had a MACK extended warranty for both the set and the lamp and they have been great dealing with both.
Getting parts from Toshiba is really difficult. The light engine for the 65hm167 has been on back order from them for months. My repair guy found one from another source, but warned that it was probably rebuilt, where the replacement from Toshiba would be all new parts. Danger would be that the DMD chip on a rebuilt unit might not have been one of the components rebuilt in the unit, if it was working ok at the time.
Toshiba continually gave the repair guy an estimate of "end of the month" every month for when they would get them in. To me, this means that they had no clue.
He ordered the light engine from a secondary source, after confirming from Toshiba that there were none to be had from them and then got the light engine from Toshiba the next day via UPS. Apparently Toshiba doesn't know up from down (as evidenced by their customer service people). Their parts division is apparently no better.
Took about 1/2 hour to put the new light engine in the set. Most of that time seemed to be removing the cabinet screws from the back of the set. New one fired up fine and the picture looks like when the set first came out of the box.
I had asked the repair people about just replacing the DMD chip. They said they only replace the whole light engine to avoid alignment issues that can occur when you just drop in a new chip.
Sounded like bull to me in that a light engine is probably easier labor and the part is more expensive. Anyway, MACK approved the replacement and I'm hoping that I get another year or two out of this set before I have to replace it.
The repair guy told me that there isn't a manufacturer that is really good about stocking replacement parts, but that Toshiba is the worst. I believe it, as this is my second replacement light engine on my set and neither was obtained quickly.
The 1st replacement took almost 90 days to get. This one about 60. Long time to be without a set, if it wasn't working at all. I just had to live with the ever increasing number of white dots (about one new one per week, once they started appearing.