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Pn50a550s1fxza cycles on and off - PN Samsung Televison & Video

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I have a Samsung plasma tv Model PN50A550S1FXZA that starts up with clicking and popping sounds and all kinds of colors and shapes on the screen as it tries to warm up. is this a Y board issue?


Check the power supply, the high voltage circuit, which near where the plug-in from the 120 volts. There is a capacitor rated 450 volts at 100 uf (microfarad). (Could be more than one capacitors). The high voltage at the capacitor should be around 390 volts, anything less and you will need to replace this capacitor (or capacitors). Replace with a 300 uf at 400 to 450 volts. Got mine off some old power supplies.

Oct 31, 2017 | Samsung Televison & Video

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My samsung 50 plasma tv model #pn50a550s1fxza makes a loud annoying sound when i turn it on and no picture shows up. help please. would appreciate it


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Feb 19, 2017 | Samsung Televison & Video

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When turned on the tv cycles on and off . This continues but the tv never turns on. It just keeps cycling.


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/

It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Feb 13, 2016 | Samsung Televison & Video

1 Answer

Plasma. Why does picture have vertical bar distortion?


Hopefully, it is just the video signal cable. Make sure it is firmly connected or try another cable. If that doesn't work, you will have to have the TV checked by a professional.

Nov 30, 2015 | Samsung BN94-01658B PCB, Main,...

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Model pn50a550s1fxza. What is causing the tv to do this?


check the main.board n power board one of them is faulty needs replacement

Oct 02, 2015 | Samsung Televison & Video

1 Answer

I have a Samsung pn50a550s1fxza the is a relay on the power board clicking non stop once it's plugged in. When I disconnect the logic board it stops.


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center.If you wish to get some details; check the site linked here.Surf the site with patience.Pull up older posts.http://electronicshelponline.blogspot.com/ .In most cases, the main board might have to be replaced.If so, a software [firmware] update too might be necessary.

Sep 17, 2015 | Samsung Televison & Video

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