Question about Televison & Video

1 Answer

Rca model p56812bl

No power supply working you can hear a pulse at fly back but no high voltage

Posted by on

  • marcelino solorzano Jan 23, 2008




1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 8,617 Answers

I would try soldering the flyback terminals on the PC board and also re solder around the Horizontal and vertical yoke pins as well as the transformer and line coils. Rca has ad some problems with bad solder problems on the circuit boards. let me know if I can assist you further.

Posted on Jan 23, 2008

  • Sonny Berry
    Sonny Berry Jan 23, 2008

    Okay tomorrow i will give you some more areas to check.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Rca D52130

Power supply or high voltage supply problem---set well known for bad solder connections in and around the high voltage transformer---also known in early models for the high voltage splitter to be bad.

typical high voltage transformer:


Nov 05, 2012 | RCA Televison & Video

1 Answer

Screen pulses white. off and on, lite on front goes from green to red. model is Hisense TL2020

that problem is usually cause of shorted fly-back transformer that give a very high voltage you can find that by hanging all secondary connection of fly-back then power it again then use your multimeter and range it to dc then ground the black prove to the body of your unit test the b-plus voltage if the supply is flickering it means your fly-back is shorted and if the supply is stable it means you have a shorted diode in secondary thank you

Mar 05, 2011 | Hisense TL-3220 Television

1 Answer

When I turn the tv on it has no pic and then turns itself off but would come on after about 5 times of turning it back on but now it just had sound and no pic.

It seems that your Pulse Width Modulation drive ic on power supply or high voltage section fails. This can be resolve by replacing the IC MCZ3001d that will be found on your power supply or at the high voltage section.(near Fly back transformer) If you have basics knowledge in electronics and soldering, you can easily fix it.

Mar 02, 2011 | Sony KP-57WS520 57" Rear Projection...

1 Answer

RCA P56812BL, Flickering Static like lines

Check all inputs and tuner, that you can, and report back.

Apr 19, 2010 | RCA P56812BL 56" Rear Projection...

1 Answer

No audio/video

sounds like fly back failure. high voltage transformer

Aug 12, 2009 | RCA 27V514T 27" TV

2 Answers

Screen doesnt turn on then shuts power off

The fault you are describing is caused by a faulty fly back transformer. The fly back transformer provides the high voltage required to light up the picture tube/s on the set. Other than the fly back transformer there are a few components that supply the fly back with power that may have failed. Generally not overly expensive to fix

Jun 26, 2008 | RCA R52WH73 Projection Television

1 Answer


Sounds like the high voltage block,part number 205064,this part is behind the speaker grill,there is a access panel to remove,part is between the left and middle tube,has red wires from the tubes and black ground wires on the left side,hope this helps.

Jan 23, 2008 | RCA P56812BL 56" Rear Projection...

1 Answer

Will not power up

your problem is in flyback or high voltage section failure.

  • check horizontal output transistor
  • check fly back transformer.
  • check for supply to horizontal section as high voltage from power supply may create such problem
  • as this failure is due high voltage section so it is better to take skilled technician help.
  • good luck.

Oct 15, 2007 | Toshiba 27A51 27" TV

2 Answers

Powers on, audio works, no video at all

First, need to narrow down the problem. Did you perhaps change the input source? To this point, change the input source, there should be text on screen that indicates what source is you see this? Change the you see the volume level bar on the screen?

May 12, 2007 | Toshiba 61H70 61" Rear Projection...

1 Answer

No pic no sound just ticking

This set normally has problems in the horizontal and high voltage circuit. The horizontal output will short out and I often change the high voltage transformer. The high voltage splitter is another one of the usual suspects. Since it's ticking at plug in, then, I would look at the secondary of the high voltage transformer or the regulator circuit. Checking the the horizontal output first for a short and if ok, checking the B+ voltage on the collector would be my next step. That should give a good thought as which direction to go. Hope this helps.

Apr 01, 2007 | RCA P56812BL 56" Rear Projection...

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

111 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75846 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 3 Expert

82322 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides