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Re: high pitched sound
The high-pitched squeal is from the power supply, usually because of failure of the horizontal output transistor, flyback transformer, or both. Without a specific model I can't give more definite information about part numbers or likely costs. But repairs of this type usually have parts costs in the 10 to 75 dollar range (depending on just which parts are bad, and where replacements come from) plus whatever labor costs the repairer charges.
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A high pitch sound can be a capacitor losing power it would sound a bit like a fire work. most have back up on the board but it put more pressure on them the more times you use the tv. would check them and replace. all of them can be 5 in a row in some models.
The high pitch popping that you are hearing is arcing in the high voltage circuit. I would not suggest a repair on a set that is this old. Convergence repair plus a high voltage problem could run around $500-$600. But it is your call on the repair, I can only advise.
I hope this helps you.
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Ur high voltage FBT,is dead the block of plastic with a red wire with a cap hook to the CRT(tv tube).Might also have to replace the whole power board?Because just couple parts it hard to determins,what else also ready to burn next!
is this just a whine since you describe no problem with the picture it dosent jump or change color or flicker. there may be an easy fix this sounds like some coils oscillating and i tell you what can be done you can take some silcon and put on these coils to dampen then vibrations. now ther may be other problems but without looking this is my first gues ...where are these coils? ll037 on the power supply deflection board
I haven't worked on an RCA DLP but have on Samsung DLP, based on your description it sounds like the color wheel is bad. Take the back off and turn on TV make sure its not a fan making the noise ,but most likely its the "wheel" it is inside the light engine probably right next to where the lamp is plugged in. If the whine comes from this area definitely the wheel.
my d52w19 chassis itc222 as posted most of the time wont turn on and the green light flashes three times every time it makes a small noise. sometimes it does turn on and you hear a little pop and the tv fires up. latley there is a really high pitch noise that will slightly change pitch if you move the tv or put slight pressure on the top or botttom rear part of the chassis. thanks for the help as I have seen that this has been posted before without mention of the high pitch noise.
ok does the set show a picture durring this whinning
i have ran into this problems .. sometimes it has to do with a coil that is oscillating...ll037 or ll029...the fix for this is simple if it is the problem. dampen the coil with silicon.