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40 in Panasonic Vierja turns on and off intermitently

I am not certain if the tv is overheating, has a bad fuse (if there is one - I don't know for sure). Of, if its just a bad ATT U-verse box.
This has just happened in the past two days.
TV is not quite 2 years old.
Suggestions welcomed - new TV is not an option since the retailer just went bankrupt one week ago! Convenient huh!

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Posted on Apr 13, 2009

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How do you replace a fuse on the 2011 Panasonic TC-P55VT30 plasma TV?


gently lie it facedown and unscrew the back to reveal the boards and fuses

Jul 28, 2015 | Panasonic TCP55VT30 55" VIERA 3D HD Plasma...

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My 2008 panasonic plasma keeps blinking 6 times modal # th50pz80u


the cause it could be bad either SC, SS,D, P board. if you want to trouble shot this tv unit just let me know then i can give you further solution.if you don't have an idea just leave it to the trained tv technician to fix the problem.

Sep 23, 2012 | Panasonic Viera TH-50PX80U Plasma TV

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Panasonic PT47XD64J Rear Projected TV


I know this sounds crazy but unplug everything in the HDMI ports. This series of Panasonic TVs have had many problems with bad HDMI ports. If there is a device plugged into one of the blown ports the power light will blink and the TV will refuse to power on.

If it comes on plug in devices one by one. You'll be able to isolate the bad port. Just refrain from using that one from now on. There's not much else you can do. There are HDMI splitters available if you need all your ports. It's an extra step but it's certainly cheaper than buying a new TV.

Jul 23, 2012 | Panasonic Televison & Video

1 Answer

Lg 40 tv shuts off


I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.5_14_2012_2_38_47_pm.jpg

May 14, 2012 | Universal 40-42 Inch Flat Screen Panel...

1 Answer

Sat went out lost power. can not get tv to turn on. checked outlet (fine) sat powered up. no tv power.


When this happened it probably took out Q406 a switching field effect transistor on the power supply board along with F401 an 8 amp Slow Blow fuse. The FET will have to be soldered in if it is bad. If the fuse is blackened, it is almost certain that the FET is shorted as well.

Jan 30, 2011 | Panasonic TH-42PX60U Television

2 Answers

Panasonic PT-45LC12......won't turn on


Hi,
Its ballast supply issue that need to be replaced/ repaired.
Ballast supply drives Lamp in TV.

Jul 06, 2009 | Panasonic PT-45LC12 45" Rear Projection...

1 Answer

TV will not stay on shows error code


I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsun. Know to have this common problem. If you can, or have a friend that can Solder components?. Unplug your set remove the back panel & locate your power supply. It will be the PCB in the center of the set just above the Video/Audio conections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Link to a photo of the PCB. Make a note of the location of all cable connections then unplug them all. Un-install PCB, Check a Fuse first. I believe their is 5 or 6 of them on the PCB. Then replace the two 3300uf 10v 105C Radial capacitors at C8060 & C8059. The location of the caps are in the Lower bottom edge of the PCB. A local shop may Carrie them if not, digi-key has them. Part # http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-1754-ND. Total cost was $7 with S/H.

Jun 02, 2009 | Televison & Video

2 Answers

Lamp will not light


At first i was thinking the ballast had gone bad but after reading a few other post i think it would be best to call pannasonic..
others forums read:
ballast had gone bad. Panasonic no longer makes these ballasts so mine needed to be rebuilt at the tune of $400.00.

With the ballast in place still nothing so now they claim that they need to order a "kit" from Panasonic which basically is all the components of my tv.

Jan 28, 2008 | Panasonic PT-40LC12 40" Rear Projection...

5 Answers

CT-32HL42 Panasonic will not turn on


These sets have a number of problems like yours which are associated with bad solder connections or cold solder joints. On this set one pin on the the start-up relay is usually open or intermittent The solution is to resolder connections on main p.c board. and especially on the vertical output IC. Also change the caps in the vertical section to avoid future problems. Scrivitron.

Jul 06, 2007 | Panasonic CT-27G13 TV

1 Answer

Panasonic TH-50PV30


You can check the board where the components are mounted and resolder any that look bad. a brief power outages may cause the TV to turn off on its own. If you are using a surge protector, try connecting the set directly to the wall outlet. In your case it could caused by a blown fuse, a leaky diodes or a bad solder joint at the horizontal drive transformer. all can be replaced at a local electronic or hardware store and they're easy to replace If this does not correct the problem, you may need to have your TV serviced.

Dec 21, 2005 | Panasonic TH-50PV30 50 in. Plasma...

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