Question about Panasonic TH-42PX75U 42 in. Plasma Television

Open Question

No power in panasonic plasma

TH-42PX75U does not power up, no LED light, panasonic says it is likely a fuse in the power supply. Is this hard to fix?

Posted by on

4 Suggested Answers

phil_frye
  • 295 Answers

SOURCE: Panasonic plasma 50PZ85 power led blink 10 times

Either a bad power supply or a bad processor board.
A Good Service Shop should know what the 10 blinks are indicating.
May be a repair cost between $200 and 400 dollars.
Be prepared -
Blessings,
A/V Media Guy

Posted on Nov 22, 2009

  • 8457 Answers

SOURCE: i have a plasma panasonic viera TH-42PV60A stand

Not power supply,it the backlight video board it dead.

Posted on Nov 23, 2009

Testimonial: "cool thanks alot"

rylee_smith
  • 8619 Answers

SOURCE: Panasonic Plasma TH-42PX60U, got a power surge.

Hi


Thanks for using FixYa.These kind of issues in plasma usually happens due to bad cap on any of the boards inside. However, to check what has gone bad you’ll have to open the back of the unit
you’ll need to check bulged/swollen capacitors on power supply board. As the unit won’t show anything for a long time so it means that it is the power board which is causing this issue. These issues usually happens due to overheating in plasma TVs after sometime, as these sets are very hard working device and produces a lot of heat.Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Jun 04, 2010

walesarumi
  • 6993 Answers

SOURCE: My Panasonic TH-50PZ800U plasma TV

Hello,

This is not video board problem. It is actually a power supply problem.

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 "mcmelectronics.com"(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.

Posted on Feb 02, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How to reset tv


hi Tracie,
is the set making a clicking noise?
is the power light flashing on the front?
or no power light at all just dead?
if the set is just dead, just put your ear to the back vents can you hear like a very faint screaming noise and can you smell and burning in the vent?
if so it just could be capacitors on the power board.
if its clicking the that will need a service kit on the power supply board.
if the power led is flashing then you will need to count how many flashers from start to finish when you first turn set on.
hope this helps.
Panasonic TH 42PX75 80 TH C42hD18 Dead TV Repair Fix TXN P1XGTUS HNTUS... Panasonic TV Won Turn On Learn How to Replace Your Power Supply FIX Panasonic Viera 42 inch Plasma SU BOARD TH 42PX75U Diagnosis Repair...


Jun 20, 2014 | Panasonic "Viera Tc P65 Gt30 65"" Class 3...

1 Answer

My Panasonic TH-42PX75U 42 in. Plasma Television has no sound and picture, the red light goes on but it blinks 13 times what does that mean and how can I fix it?


Just get into this site for more details about Pansonic Plasma TV blinking codes. Sometimes, some ads by the side of posts too help youl Site name is "Electro-help". Type in this site name to Google search box [not inot the address bar to your browser], and press enter.

May 24, 2012 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

My Panasonic TH-42PX75U will not turn on. It shows no sign of power i.e. red blinking light that I keep hearing about.


Probably the very common failure of the main power supply or one of its outputs. The power supply board is normally easy to identify; it will be a smaller board but with larger parts on it and is normally plug-connected so shouldn't require soldering at all. Panasonic may have new stock or repaired supplies on an exchange basis; call them. The failure mode is mostly caused by the failure of a few cheap components which can be found by any tech owning an RCL meter with loss readouts. I've repaired many hundreds of this type of supply for a dollar or two in parts and not a whole lot of time. It was a nice sideline while I still did this kind of work.

Aug 08, 2011 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

How do i replace the backlight on a Panasonic TH-42px75u?


Plasma displays do not have backlights. The ionized gas (plasma) in the pixels is the light source, just like a tiny neon light. If your screen is dim or blank, check the high voltage supply that ionizes the gas.

Dec 13, 2010 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

Got my hands on a Panasonic th-42px75u 42 inch but it won't turn. On is it worth fixing and how much would it cost thanks


The tv can be fix about half of the price of a new one.This tv brand and model known to have alot of power supply board issues.The price about between $500-$550 Tech. replaced tv with a new refurbish power supply board replacement or troubleshooting and by replacing components parts on the power supply board.

Dec 07, 2010 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

No power


Check ur power source?Yes,than the power supply board is dead,that the board,where the power a/c cord plug into it.Replaced the power supply board,ur tv will be power up and running again.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power suuply board for the replacement.

Aug 02, 2010 | Panasonic TH-50PX75U Plasma HDTV

1 Answer

We were playing a video game on the pansonic th-42px75u tv and it cut off. Looks as though it is getting no power. Changed outlets and checked still no power. Does it have a fuse that could be replaced?


If the power indicator is totally innactive then a new power supply will fix it.
If the power indicator falshes a code usually red then you will need to tell me exactly how many times it flashes.

May 20, 2010 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

SCREEN WENT BLANK, POWER ON INDICATOR LIGHT FLASHES 7 TIMES GOES OFF FOR A FEW SECONDS AND REPEATS.


SU OR SU BOARD BAD NEED REPLACED
TH-42PX75U PART:
Manufacturer Panasonic Part Number TXNSD1HNTU Description SD BOARD
Manufacturer Panasonic Part Number TXNSU1HNTU Description SU BOARD

Sep 16, 2009 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

Broken glass on tv


Hello,

You can find the Front Glass for this model in the link below.

Panasonic TH-42PX75U Front Glass Replacement

Mar 30, 2008 | Panasonic TH-42PX75U 42 in. Plasma...

Not finding what you are looking for?
Panasonic TH-42PX75U 42 in. Plasma Television Logo

Related Topics:

585 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68229 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

charlie rodriguez
charlie rodriguez

Level 2 Expert

151 Answers

Are you a Panasonic Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...