Hi. I have a 32" TV (model No. 32PFL3505D/F7). I can't get it to stay turned on. It's hooked up to a Dish Network box, and I've been using the Dish Network remote. Had no problem since I hooked it up maybe 2 years ago. Suddenly it won't stay on. I'll turn it on (either using the Dish Network remote or by pushing the power button on the TV itself), it powers up, displays the Phillips logo, and then shuts off. One morning I tried for 20 minutes to get it stay on (I turned it on probably 80 times) without success. Then yesterday on the third try it stayed on. Most days I give up after a few minutes and maybe 15 attempts. Any suggestions?

Thanks in advance.