The TV turned off by itself when playing my Xbox 360. Then it would turn on then off but now it stays off, But when i unplug the chord it turns on with a black image then off again. i dont know if its a power issue or a panel issue.
Fault in the main power supply regulator 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://electronicshelponline.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.
SOURCE: 42" Samsung plasma keeps turning off
I have over 10 years experience in electronic tech support.
I
know this isn't what you want to hear, but the problem you've described
can't be fixed with troubleshooting. Your TV will have to be repaired.
There is a part that has developed a defect and needs to be replaced. If
you're still in warranty, the TV will be repaired at no charge to you.
The warranty would likely be at least one year from the date of
purchase from the manufacturer. If you purchased an extended service
plan they will repair the TV at no charge as well.
If
the TV is no longer in warranty, it will likely cost a minimum of $150
parts and labor. This is assuming that you only need a power supply
module. If the problem is more than one of the circuit boards, the price of
repair could go much higher.
I hope I've provided you useful assistance and that this information
allows you to make an informed decision as to how to proceed from here.
Please be sure to vote on my response. I hope I've earned a good rating from you today.
Please let me know if I can be of further assistance.
SOURCE: Samsung 42" Plasma HPT4254
i have the same exact tv with the same problem... it was a bad connection on a transistor... look at the connections closely
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SOURCE: Bottom half of the screen is black on Samsung HP-R5072 50 in. HDTV Plasma Television
I have a solution. My Samsung plasma had the same problem with the bottom half of the screen being black. Follow these directions and it will not cost you a dime, just some time. I took the back panel of the tv. I found the lower buffer board on the left hand side. I disconnect all the ribbon cables. Use an air cleaner to spray out any dust on the ribbon connection and the board. I connect the ribbons back to the board. My plasma is now as good as new. If you have issue with the top portion, do the same with the upper buffer board. I was going to buy a new tv but I'm glad I gave this a shot first. It's been almost a month and it's still working fine. Hope this helps and hope it saves you some money.
SOURCE: Samsung LN32A330 turns itself off after 5-10 minutes of being on.
its usually the 2200 microfarad cap on the power board that stops working. its really easy to replace and its only a 5 dollar repair part. use a 2200 mF cap rated around 25 volts instead of the usual 10 volts. samsung is famous for bad caps. if the cap feels buldged than this is the problem
SOURCE: my plasma tv keeps turning itself off
Hello,
This issue is related to a power problem in as much as the TV turns off on it's own.
The problem is consistent with overheating on the power supply board of the TV. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby making it to misbehave.
The power supply board of the TV has few capacitors and IC. If any of these IC's gets short or become weak, it can cause the TV to turn off on it's own.
When current passes from electric outlet to the power supply board of TV. The current also goes to the weak/faulty part, then the current stops or slow and the board overheats and TV shuts off on it's own.
To solve this issue, check the power supply board and read it with a meter and continuity tester, in order to detect the faulty part and replace the faulty part on the board which is short due to which power supply board
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. Or you can by a refurbished complete power board from www/shopjimmy.com to save you some stress.
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 have the ability to read the fault, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.
I wish you the best of luck.
Regards.
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