I purchased my RCA D52W25 a little over a year and a half ago. I know RCA is not known for their quality and I am looking to upgrade real soon, but I am trying to get by for now. Anyways, I am having a high pitch noise coming from my TV when I turn it on. As the TV stays on for a little while (about 5 to 10 minutes), the noise goes away. I am trying to figure out if it is something major or minor going wrong with it. I took off the back panel today to try to pinpoint exactly where the noise was coming from, but was unable to put my finger on it without taking the whole TV apart. Does anyone have any ideas what it could be?