We have the same problem a lot of people are having in that the Resistor burned out. We realize that we probably have to replace the HV Block, however we have no idea what it looks like or where it is in this tv. If anyone can tell me where it would be that would be a huge help. Thanks
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Re: HD52w140 Wont turn on.
If that's a dlp unit they are garbage ive had two and both died in same manner in less than a year one the bulb blew on in three months after purchase then went blank and started making a high pitched squealing sound had to argue with rcacust support after repair shop said they could not fix it rca finally sent me a new one but with less features after i argued with them for another three that one did the same thing after three months now rca wont even talk to me and ive got a 100lbs paperweight that does nothing i was told it was the light engine at a cost of around a grand for part so don't waste your money on a repair shop mine is still sitting there blank and i understand this is a common problem from checking the web just roll it in the back yard spend you money on one that will work im going lcd this time and i do houseld appliances not tvs so dont worry about rating me i like to pass this info on every chance i get just to help my friends at rca
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Good that you replaced the switch, but usually the resistor is also bad when this happens. The resistor is usually somewhere under the dash screwed into the duct with 2 screws and has a connector coming out of it with several wires. Remove the connector and unscrew the resistor. It will probably look burned up. If so, replace it.
If not, the wires have probably burned up somewhere along the way. If you have trouble finding the resistor, please let me know and i will try to locate it for you. It looks like this:
This is definitely (based on works on Hi only) the Blower Motor Resistor located near the Blower Motor. It is defined with 3-4 wires going into it. It is easy to remove and replace. Purchase the part at the auto parts store versus at the dealer to save you a lot of money.
Install this first before deciding to replace the Motor.
After reinstalling, if the motor is making noise, turn it off IMMEDIATELY so you don't burn the resistor up again. The smell should be either the Resistor burning-up or the Motor burning out. The smell should have an odor like electrical burning?
Let me know if this helped, or if you have additional informatin or questions. Feel free to contact me on FixYa.com!
There is usually an identical resistor somewhere else on the circuit board, so if you cannot read the colors of the burnt one, you can read the colors from an identical resistor on the same board. If you just replace the resistor, it will probably just burn out again or damage another component, you have to find the cause of the resistor burning out, most likely an electrolytic capacitor failing. Look for bloated or seeping capacitors and replace those as well. Also look for broken or burnt toroid coils.
Your flyback has shorted out and thats whats burning the resistors cahances are the HOT is shorted as well. You can get some information at the following link for RCA problems. Just leave them an email with your model and what the problem is http://servicemanuals.vstore.ca/
Sounds as if you'll have to replace the regulator and filter cap for it, at the very least. You may have taken out the flyback again, as they're not very hardy when driven with too much AC bias. The arc that you are calling a spark will have to be addressed also. If you have an intermittent connection at that point, the feedback voltage will be incorrect and you'll have the same scenario on dealing with a dead set once again. Hope this helps....accordianman
From your description ..actually this is a common problem and no simpley replacing the resistor will not fix it. this chasis has a problem with what is called the high voltage splitter.. there was a number of these made with a defective splitter. RCA HAS ISSUED a service bulliteen for certain models and serial numbers. the board and the splitter is generally replaced. (I just worked on one of these 2 days ago and got and order in for the parts) ......just reread the tech bulliteen.. the spitter which develops a crack is rca part number 258512 the resistor or the part that burnt is resistor a common 27k 1/2 watt 10% carbon resistor