Question about RCA R52WM24 52" HDTV Projection Television

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I have a r52wm24 and have replaced the flyback. The main fuse continues to blow. I have replaced the two diodes on the MID (found faulty), Plugged everything in except the PSD board at MID powers ok. I have replaced many caps and some transistors to be sure they were new. I think the PSD have a direct to ground causing the diodes to fail. Im am at a lost, please help thanks.

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  • Willie Howell May 27, 2011

    The main fuse is failing.. you have replace the diodes. what about the main bridge rectifer? which capacitors did you replace. i have had some success at the shop rebuilding these boards. Let me know what you have replaced on the MID board. So do the diodes keep failing?

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  • RCA Master
  • 8,617 Answers

Replace the deflection board you have the same deflection board as the R52WH74 model or the PSB-260 deflection board. You can get replacement deflection boards from www.tvrepairworld.com and also on ebay.

Posted on May 28, 2011

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2 Answers

When turn on it blows the fuse


There must be a diode that is faulty in the power supply section mainly on of the rectifying diodes.
If you look closely at your board you will see four diodes that just after the fuse and befroe the Big capaictor(filter cap.) One of these four diodes must be faulty as the fuse keeps blowing. the diodes are responsible of current limitation drawback. So there must be current flowing back to the fuse that makes it keep blowing.
Check and replace. Good luck
Thanks for using Fixya.

G.

Jun 27, 2011 | Pioneer SX-205 Receiver

1 Answer

Replaced the fl231 fuse tv worked for day now blown again and tv keeps shutting off what do i check now


Resolder the flyback pins as thats what causes the FL231 fuse to blow. Soldering the flyback should solve the issue you may need to replace the fl231 again

Apr 28, 2011 | RCA R52WM24 52" HDTV Projection Television

1 Answer

Watching the TV and heard a "pop", it went dead. Opened up the back and found a blown 4A 125V fuse. Replaced fuse and plugged in TV. Fuse blew instantly when I plugged in the TV. Sylvania...


The power suply unit may be dead......if the fuse blows instantly it means that the main input is short.
possible parts damaged :the diodes from the mains, the power tranzistor and the ic from the primary part and other components around them.
First unplug the tv, unload the mains capacitor (using a light bulb) check all the diodes from the rectifing bridge, check for any shortened semiconductors or blow resistors.


BE VERRY CAREFUL !!! THERE IS A RISK OF ELECTRIC SHOCK ,IF U DON"T KONW ANY ELECTRONICS TAKE IT TO A SPECIALIST

Feb 19, 2011 | Sylvania LC370SL8 37 in. LCD Television

1 Answer

Our convergence control is not working. Looks


ok here is the scoop there are 3 fuses on the deflection board to the lower right of the flyback transfomer they are square and brownish on of them is open you can have tehm replace with a 4 amp pico fuse and check the solder joint on the flyback this can cause the fuse to blow

Dec 04, 2009 | RCA R52WM24 52" HDTV Projection Television

1 Answer

RCA R52WM24 52 in TV


the RCA service bulletin says to replace FL231, DL231 and CL230 all at the same time then reflow the solder on the flyback and the vertical output IC

Feb 07, 2009 | RCA R52WM24 52" HDTV Projection Television

1 Answer

THANKS


I will say that this part is shorted if it measures continuity on all the leads regardless on how you tested.
Was this mosfet nearby the power supply circuitry?
You can also check the horizontal output transistor that is mounted on a heatsink near the flyback transformer.

Mar 12, 2008 | Disney DTD1363-CAR 13" TV/DVD

1 Answer

Keeps blowing fuse


It has a short circuit somewhere...
Not sure if this is a CRT, LCD or Plasma TV but the two common causes of shorts for CRT's are the Horizontal Output Transistor (HOT) and/or the Flyback Transformer (Could be both). As a general rule if the flyback has visible cracks in the case they should be replaced. It is also a good idea to replace the HOT if you're replacing the flyback as it could be weakened and may not last much longer itself.
Other areas to check for all types would be any Diodes in the Power Supply Circuit. If a diode is open it can cause the fuse to blow. Note that a diode itself will not short, but an open diode can cause a fuse to blow.

Mar 11, 2008 | Panasonic CT-32HL43 32" TV

1 Answer

RCA R52WM24 52 in. HDTV convergence IC location


the rca itc222 chasis uses no stk the convergence is controled with transistors... the convergence amp board is located above the main signal board(green board)... it can be identified as the one with several heat sink fins on it. FL231 is related to convergence.. there has been a problem with this fuse when it blows the processor doesnt know it is a projection set so it turns it into a regular tube tv. Here at the shop we have found number one reason this fuse blows is poor solder connection on the flyback. So replace the fuse and reflow the solder connection on the flyback and around that area also the horizontal transistor and then see if that doesnt fix the problem.. if you have an more trouble ..... willie@fordtv.com

Feb 29, 2008 | RCA R52WM24 52" HDTV Projection Television

1 Answer

Tv dead


no problem

replace by same number.

but remember before you replace check the following.

  1. check for normal output from power supply.
  2. check components connected to flyback transformer.like capacitors & diodes.
  3. check for print short.
  4. while replacing h/output be careful to check heat sink compound & mica sheet normal.
  5. put on the set
  6. if still it blows then flyback transformer is faulty.
  7. hope this will help.
  8. good luck.

Oct 11, 2007 | RCA HD56W58 56" TV

2 Answers

RCA big screen tv


whenever fuse blows every time it is the indication of short circuit in tv. so please do not put fuse unless you know the cause of blowing fuse. these are the reasons of blowing fuse. 1 main filter cap.short. 2 rectifier diode short. 3 swithing transistor short 4 horizontal output transistor short 5 caps & diodes connected to flyback transformer short. 6 print short. 7 at last if every thing ok then flyback transformer defective. hope this will help. if you are not a tech person call skilled tech to fix it. good luck

Sep 24, 2007 | RCA P60828 TV

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