Question about Projection Televisions
The problem is the power supply components over heating. The power supply is on the back side right hand. supply extra cooling via a fan and it will stop shutting down. This is just a cheap and simple fix that wil tie you over for a while. cheers mates.
Posted on Mar 09, 2008
SOURCE: samsung hc-r5245w no power
Hello Chac c,
The reason that you are getting a 'red light' is because your lamp is burned out. There is a panel on the back of the TV that gives you access to this lamp. You can remove it and check the part# to be sure then replace it. I did a quick search for you just based on the model# which you provided. You can see it here - http://www.nextag.com/serv/main/buyer/OutPDir.jsp?search=samsung+lamp&gg_site=&gg_aid=1295966762
Hope this helps :)
Posted on Mar 17, 2008
SOURCE: can't turn on
When you turn the MAIN off you are killing all power to the set---Some advice---If you Google the model number of this set with the word problem after it you should find what I have seen a lot in these sets: they develop bad solder connections on the power supply printed circuit board---usually the board is about 18 inches tall and 12 inches wide--A number of sites online offer to have you ship them the board and they will resolder it for you.
I have repaired about 12 of these with this problem in the last 2 years---The board has to be removed(there are quite a few plugs that need to be labeled and removed and lots of screws that secure the board in place.)
Maybe not a job for a do it yourself person but the soldering (if it is your problem) will take about 45 minutes(including removal and installing board back).
Like most modern sets this set uses lead free solder and it is soldered(the boards) in a wave or one step process---over time from heat and expansion some connections may crack or even break loose----I would look at the POWER SUPPLY board(follow the power cord as it goes right to it)
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Posted on Sep 06, 2009
SOURCE: My Crown CTT3207W 32 in. LCD TV
If there is no audio or video, it is probably a failing main power supply.
Try the instructions pasted below:
If it's failing to turn on or stay on reliably, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself but it will likely have the same problem eventually unless they have altered the design.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.
Posted on Sep 08, 2009
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