Question about LG 42PX3RV 42 in. EDTV-Ready Plasma Television

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42px3rv powers up with sound and shuts down 63v y sus rail drops to 0v res check on rail shows short

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6ya6ya
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Posted on Jan 02, 2017

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gopakumarg43
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SOURCE: how do i fix my LG 50PC3D all of a sudden it has a grainy flashing screen and i hear the static through the speakers so it has sound.

Contact the authorized service cener for LG; in this case. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent.

Posted on Dec 24, 2014

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1 Answer

TV TURNS ON BUT NO DISPLAY AT ALL.


do a reset by manually holding down the power button, sometimes that works

Jan 28, 2014 | LG 42PX3RV 42 in. EDTV-Ready Plasma...

1 Answer

Teac ct m685 shutting down


Removed and checked the power supply unit and confirmed the capacitors
C905 220uF 420V was measured at 200uF
C926 22uF 160V measured at 21.6 uF
C908 10 uF 100V measured at 10.35 uF
C910 47 uF 63V measured at 45.8 uF
Resoldered all of the joints on this PCB to ensure good connections.
On the Main PCB checked capacitors
C401 220uF 35V measured 214 uF
C417 100uF 160V measured 100 uF
C411 3300uF 35V measured 3090 uF
D204 was still a diode
C430 4.7nF 1600V measured 4.5 nF
C406 4700uF 25V measured 4460 uF
Reassembled and confirmed worked OK

These checks / repairs did fix this fault and the television is running well.

Dec 29, 2012 | Televison & Video

1 Answer

Main power without load is ok 160v is ok 170v ok 60v or 70v ok but with load supply is 0v


check your load side maybe their is a shorted on the board, disconnect one by one to isolate the problem. the voltage is drop thats why become 0 volts. check shorted component parts to all the drive boards ,good luck.

May 07, 2011 | Televison & Video

1 Answer

F-20 has sound but no picture, on VGA, or TV cables. Power looks ok. where can i find more info on testing for the problem and fixing. Thanks


Sound but no picture usually implies a faulty backlight. It may be simple case of replacing one or more electrolytic capacitors in the power supply or on the backlight inverter board. It may be that one or more inverter transformers has gone open circuit or short circuit, causing the inverter board to shut down. If this is the case then you can replace the inverter board with a universal inverter board but you will need to figure out the wiring. In most cases there are only three wires required - 12V, 0V and switching wire.

Feb 25, 2011 | Acer Ferrari F-20 20" LCD Monitor

1 Answer

LG Plasma 42pc3d turns on, pops, then turns off


The first thing you should look into is the Z-SUS board, the one situated on the right side viewed from the rear. This board develops a high voltage during operation that might be the source of the popping sound. It is also responsible in refreshing the panel for proper picture display. The weird colors on your TV indicates a faulty Z-SUS board.
Note: Unplug the TV and wait for at least five minutes in order to allow the voltages to drain before you disconnect or reconnect any connector.

  • Disconnect the Z-SUS board from the Y-SUS board. The Z-SUS board is situated on the right side viewed from the rear of the TV while the Y-SUS is on the left.
  • Plug the TV back and turn it on.
  • You will still be able to see the weird colors the moment the TV shut off but do not flash. If it does not pop and stays on and there's a sound, you are pretty sure the Z-SUS board is faulty. Replace it.
  • If it still pops and shuts off, disconnect the Y-SUS board from the power supply. The Y-SUS board also develops a high voltage during operation. The power supply is the one right between the Z and Y-SUS boards.
  • Re-apply AC power then turn the TV on.
  • You'll not be able to see any color or video. If it does not pop and stays on with sound, you have a faulty Y-SUS board, replace it.
  • If it still pops and shuts off, please let me know.
Feel free to update me of the result and your own findings.

Dec 03, 2009 | LG 42PC3D 42 in. Plasma Television

1 Answer

Set turns itself on and off with no picture nor sound


You have a major problem with this set. Could be the main board, the Y-SUS board, or the power board or some combination of these.

Mar 30, 2009 | LG 42PX3RV 42 in. EDTV-Ready Plasma...

2 Answers

PDS4208 No display after 1minute


All voltage are OK if power supply is working alone. When the Y-sus board is plugged in, VE drops from 16V to about 4V. So the problem is onto the Y-sus board.

Mar 23, 2009 | Gateway GTW-P42M102 Television

1 Answer

As power on tv try to start but swicth off


set the proper screen voltag. adj e.h.t. driver trans c337.c327. 47/63v cap.near l.d.t. c.r.t pcb check 18 k* 3 nos . ik res 220 ohms. change trans f422 f423 all

Mar 21, 2009 | Philips 20PT643R 20" TV

1 Answer

Mitsubishi WD52725


I would say the problem lies with the Caps on the Power PCB there are 7 capacitors that fail, and the set wont operate. there are 4 100ufs at 16V 105 defrees and one 2200 uf 35V and two 3300uf 10V 105 degree. they dont always show signs of swelling either, they just fail.

Jun 24, 2008 | Mitsubishi WD-52525 52" Rear Projection...

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