Hi,

I have an RCA D52W20 rear-projection HDTV monitor that was purchased
July 2005 (about 1.5 years old). This TV gets a lot of use, averaging
maybe 4-5 hours a day from three roommates. We have a number of
components connected to the box:

- Scientific Atlanta DVR connected via DVI cable + inline HDMI adapter
- A number of video game systems connected to one of the composite
inputs via an external switch box
- A DVD player connected to Component 1
- A Playstation 2 connected to Component 2
- We use a low-end Sony receiver set up for all audio, no audio goes
through the TV.

THE PROBLEM: We noticed about 3 months ago that on all inputs
*besides DVI*, after a few minutes of being on, the set would emit a
very high frequency "squeal" or "whine" for a few minutes, and while
it was doing so, would distort the screen by stretching horizontally
slightly. After a few minutes this would go away and the sound would
stop and the picture would go back to normal. At first, we just
attributed it to voltage spikes or something and never thought of it
because we almost always use the DVI input, and only occasionally will
watch a DVD on the weekends or something.

About 2 months ago, the problem became worse - we noticed that once
the squealing started, it would sometimes not stop for several hours.
Also, it appeared to be getting louder.

Now, the sound on any input besides DVI starts immediately, and is
horrifically loud. Obviously this renders those inputs useless until
it is repaired, and now we are concerned that this problem will
eventually effect the DVI input as well. We are also concerned that
whatever is causing this problem is probably also causing irreparable
damage to other parts of the TV.

TROUBLESHOOTING:
We already tried disconnecting all of the inputs from the TV and
testing each mode. The sound goes away for all inputs when nothing is
connected, but when an input is connected (say, the DVD player) and is
powered on, the sound immediately returns. We also replaced our surge
protector as a cautionary measure as well to no avail.

Any guesses as to where the problem might lie, so that a call to a
repairshop might be successful? Thanks in advance for any insight you
might be able to give.