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I need a power supply for my rca r52wh72 tv - RCA Televison & Video

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Can the PSU not be repaired?? Or has it been destroyed?? My job was to repair these units, Not necessarily the RCA ones but power supplies that had failed. If it`s blowing fuses?? Replace the chopper transistor and all the electrolytics on the primary side of the chopper TX. If it`s not running, Replace all the Electolytics on both the primary and secondaries. These tend to dry out over time because they are within a confined space and don`t get cooled too easily. To make sure that the PSU is faulty, try connecting a mains light bulb across the 90 - 120 volt output pin of the unit and see if it lights. Note!! Some PSU get information to turn on from the sets remote control uPC so you may have to connect the PSU up to the set but disconnect the 90 - 120 volt wire that feeds the LOT/LOPTX. Good luck, Ian

Posted on Jul 23, 2009

  • Ian Percy Jul 23, 2009

    I`ve just thought, if the PSU isn`t firing up and the LOT is OK, Change the primary caps anyway but if it still doesn`t fire up, you`ll probably find that the start up resistor may have failed, Normally this is something like a 100K or 180K 0.5/1W resistor or maybe two three four or even five 18K - 22K`s connected in series which provides a feed to the base of the chopper Transistor during start up. It`s normally fed from the 300 volts that is supplied to the Chopper TX straight from the rectifiers or Block (Main smoothing / Decoupling capacitor across the HT supply)

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I need the complete model number IE: R52WH74YX38
It will be located on the same tag as the serial number.

Posted on Jul 23, 2009

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Hello...Have RCA L40FHD41YX9 ,serial number J203C40GV. Watching t.v., picture and sound go. Unplug, then replug...blue light in front, but still no picture or sound. Please advise


Fred, Unplug for a couple hours then try, if does not reset, board,capacitors or power supply gone bad.
Check the attached links for TV's problem.,
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Fix Your TV Instantly

how to fix 42 RCA flat screen

RCA 276046 Power Supply Unit PSU Boards Replacement Guide for RCA LCD TV...

http://v6.tvrepairtips.org/anon/supertips?page=1&make=&model=LTV46W1%20HD&problem=

Mar 07, 2016 | RCA Televison & Video

1 Answer

Everytime I turn the RCA L26WD12 26 in. LCD TV on it powers off and on a number of times before it finally stays on. Waited through the off and on cycle 26 times once.


You have problem with your power supply. A blown up capacitor need to replace. somewhere in the output of the power supply.

Aug 13, 2011 | RCA L26WD12 26 in. LCD TV

1 Answer

Turned on tv no picture only sound then i heard a pop and smelled burning tv turned itself off. 5 min tried turning on tv again nothing happened tv does not turn on at this time


Your RCA TV needs serious troubleshooting. Burning smell is from HV transformer or resistors smoking.

Most likely power supply and/or high voltage circuit or convergence circuit. Many times RCA have multiple or secondary faults that occur with HV or convergence failure.

Repair of RCA HV or convergence usually requires exact manufacturer parts and upgrades or repair in power supply. I would not advise trying this repair without manufacturer support for correct part numbers and service bulletins.

easyab

Feb 28, 2010 | RCA Televison & Video

5 Answers

Rca L32hd31 lcd no picture blank screen.


Your mainboard is damaged, replace it and that will solve your issue.

Jun 06, 2009 | RCA L32HD31 32 in. LCD HDTV

2 Answers

RCA 32 in TV no picture no sound just a beeping noise TV power is on


the tv has one part of the power supply working this is needed to have the microcontroller ready to work. But the tv needs more than that for work im talking 'bout the high voltage power supply who is now damaged. the parts required depends on the diagnosis in the bench but at least two are needed. the cost of this repair of course depends in how many parts are going to be replaced, but i concider this repair kind of average in this technology.

Apr 13, 2009 | RCA 32V524T TV

2 Answers

Need a power supply for RCA L37wd12


This power supply might not be manufactured anymore or the only place to find it is by calling RCA but that is a pricey board. You can also check this website and ask them if they have one. It appears like they do not have stock but you can call them just in case they have not updated the site.
I can also help you in repairing the defective power supply if you still have it. Write to jah2mil@hotmail.com if you need further assistance.

Apr 04, 2009 | RCA L37WD12 37 in. LCD HDTV

1 Answer

Picture blurry, now doesnt turn on. a circuit board sparks under middle lamp.


Your problem tends to be due to bad solder or defective power supply board in your tv .
You need to check the soldering in your tv .

For power supply board you can get from the link below

Power supply board for RCA tv

Hope this helps .

Feb 28, 2009 | RCA HD52W58 52" TV

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