Question about Sampo PME-50X7 50 in. HD-Ready Plasma Television

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Unit is not working,not turning on

Many capacitors 2 on main board and12 others have raised or rounded tops.

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If you know how to solder, then it shouldn't be too difficult. You can get the replacement capacitors at any electronics store or Radio Shack. The specifications will be on the capacitors itself.

Posted on May 21, 2008

  • Swilin Sampson
    Swilin Sampson May 21, 2008

    The capacitors with raised tops are defective. Hence your TV is not working. They will have to be replaced. Here is a pic of busted (left) capacitors and normal ones (right)



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1 Answer

Power turns off after 2 seconds once turned on.

Get an ESR meter, not all caps show outwards signs of failure.

Feb 05, 2014 | Televison & Video

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Tv was working last night turn it off. This morning try to turn back on and tv wont turn on no more


The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board.

I do not think it needs replacement, rather some defective capacitors are causing this issue.
Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like ""(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Good luck.....

Apr 02, 2011 | Sanyo Televison & Video

1 Answer

Hi, I have a 2-3 inch solid vertical white line down the middle of my screen. It is present on all inputs and modes and has only appeared since the colour wheel was changed. Can you help?

The connection between the main board and the light engine may need to be reseated. If that doesn't work then the dmd board on the projector is probably bad. This is not uncommon for a unit this old. To reseat the connection you must remove the power input board,power supply/ballast,metal shield and then the main board screw. You can then raise up on the rear of the main board a little and pull gently towards you. It should detach from the bottom of the light engine. If you have any board cleaner you can clean and air dry the connections. After they are dry reseat the connection and make sure the board is in place. You should see some plastic rounded top guide pins poking thru the the main board towards the rear of the board. This lets you know the board is in place. Now put it all back together and hope for the best. If it still does it then your dmd board on the light engine is probably bad.

Jan 30, 2011 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

I have no power to my LG 26LC55 tv

Ok had the same issue with mine, opened the unit up and found the Dark Blue capacitor had blown, the top of the capacitor had bulged out, A friend ordered some 3300 uF 10V capacitors from RS components [you have to buy them in packs of 5]


Lay the unit on a soft surface,

Undo the 4 large screws that hold the base on

Then undo the screws around the side, there is on the back as well

You will find 2 screws in the connections area

Lift the over off

The power board is located on the left hand side

Remove the power lead on the bottom of the board

Then the other cables.

Undo the 4 screws that hold the board on place

Locate the capacitor it's a blue one, run your fingers across the tops of the capacitors, if you find one that is leaking or raised that's failed

Turn the power board upside down

With a soldering iron and desolder tool, desolder the capacitor

Make note of the position of the + / - locations

Insert the new capacitor and resolder

Also check the power fuse located on the lower left of the power board

Good luck it worked just great with mine

Dec 14, 2010 | Televison & Video

1 Answer

I have a Sony flat screen lcd tv. When I turn it on,there is distortion on the screen. What is the problem?

This can be cause buy one or two problems. First check all connections to the television, if possible disconntect everything from the TV, and check with just TV Signal.

If there are lines in picture then you may have a bad T-CON board or MAIN board.
The other problem area is bad capacitors on the Power supply board causing low voltage to the main board.

Try opening the unit and with power off disconnect any connectors and reconnect them, this will include the LVDS Cable that runs from the main to the T_CON board which is usually hidden behind a metal shield towards the top of the unit. Sometimes doing this will correct problems.

But my best answer is check the power supply for leaky capacitors or ones where there tops are buldging.

Nov 10, 2010 | Sony KDL32LL150 315 in HDTV TV

1 Answer

When i turned the tv on, it flickered right away and i can hear a ticking sound. I has been 2 years that we've had the tv but this is the first time we had that problem. No other electronic devices near...

This is due to a fault in the power supply,It involves some capacitors on the power supply that are leaky. if you take the back off and examine the power supplys capacitors, the bad ones are buldging at their tops. NOTE: Most caps are flat on their tops. The ones that usually go bad are the values 2200uf rated at 35v, and 680uf rated at 10Volts there may be at least 4 that needs replacing and they are all round each other usually near the connector that connects the PS to the Main board.

Nov 10, 2010 | Vizio VW26L 26 in. LCD TV

1 Answer

50 inch plasma blank screen

I bought my Philips Magnavox 50" plasma in June of 2007. In february of 2009, I noticed increasingly longer delays in the video coming on after turning on the power and then the audio began to delay coming on. After a few weeks of this problem the audio and video then stopped coming on at all. However, there was power going to the unit because the green power light was working. I noticed over 50 other consumers on this website had the same problem. WITH THE HELP OF OTHERS ON THIS WEBSITE, I HAVE FIXED THE PROBLEM FOR $40. YES, FOR LESS THAN $100.00 I HAVE A WORKING HDTV AGAIN, BUT WITH NO THANKS TO PHILIPS - MAGNAVOX. THEY WERE USELESS. 


1. Unplug your power supply cord.
2. Remove back panel on your HD.
3. Look for capacitors that have a bubbled or slightly raised and rounded top. This indicates the capacitors have overheated or leaked and need to be replaced. The normal look is a flat surface with no raised features at all. (I had two bad capacitors that were side-by-side and identical: 3300uf 10v. Also, they should be located on the power supply board. My power supply board is in the middle of my 50" plasma.) 
4. Go to an electronics repair store or Radio Shack and see if they carry your capacitor type and size and replace them yourself if you are comfortable with removing the capacitors and soldering new ones to the power supply board. The capacitors will cost you $2.00 each or less. 
5. I was not comfortable replacing the capacitors myself so I removed the power supply board by removing the screws and unplugging several wire connections. This was not difficult at all. I then brought the power supply board to a local electronics shop that did repairs on HDTVs and simply asked them to remove the bad capacitors and solder two new capacitors onto the power supply board. They did it for $40, which included cost for the 2 new capacitors, while I waited and it only took about 10 minutes.
6. I replaced the power supply board and back panel of TV and it worked!!!

Some people on this sight suggested replacing the capacitors with some that have higher temperature ratings. Based on that advice, I wanted to replace my two that were bad (3300uf 10v) with two rated at 4700uf 35v, but my electronics guy suggested against it. Instead, I replaced mine with 3300uf 50v, with the only difference from the original parts being the higher voltage (50v instead of 10v). I figure if the problem occurs again, I now know I can get it fixed for less than $50.00. Philips - Magnavox should be ashamed for such poor customer service and not telling people about this simple fix. When I called their customer service support number I was simply directed to a repair place --over two hours away!!! 

Jan 22, 2009 | Philips 50PFP5332D 50 in. Plasma...

1 Answer

Akai 42" LCD TV - Bad Picture

there is a weakness in the power, this could be power board or the main av board. the capacitors would be the main problem as they control the voltage around the power board and also on the av board. you maybe able to see the problem if the capacitors caps have rounded at the top, but on the av board this is harder to notice as they dont go rounded at the top they need checking with a meter to see if the voltage is right coming out onto the board. these are called smd capacitors and are soldered to the top of the board and a lot smaller than normal capacitors. a visual look at the power board would be needed to see if there is a problem

Jun 29, 2017 | Televison & Video

2 Answers

42 plasma philips

All you can do at home is leaving the TV unplugged for one or two hours and see if this solve the problem.

If the unit has just been repaired, and it is faulty again, contact the service back and have the problem fixed.

Common faults on plasma TV can concert the PSU power supply board, the sustain boards, and other boards, wiring and connectors.
The testing and repair job must eb done by a technician.

Dec 19, 2008 | Philips 42PF5521D 42 in. HD-Ready Plasma...

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