Sounds like The main power supply regulator section circuit fault. 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. 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.
Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. //
There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both. Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced. If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't. Sometimes you may have to do the opposite to start it up and unplug it for 5 mins, then try.
If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up. Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit. IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).
Most of the caps that go are 10V 1000uF or 3300uF.
I found some great videos of the procedure (for many Samsungs with the same issue) on youtube. The most relevant one I have made a link for and direct video insert
Have
you misplaced your Olevia 527V LCD HDTV Owners
Manual?
Would you like a digital, searchable, pdf version of the
Olevia 527V LCD HDTV Users Guide? Follow this link to download a pdf
version of the operations manual.
I hope that helps. ______________________________________
Yes, there is a fuse in the power supply module. You can try to get the numbers printed on the power circuit board and Google it to see if you can get one on EBAY, it should be aorund $100 or less.
this model has a history of power board failure check to see if you have a couple of puffed up caps these can like devices will have a puffed out top from venting the values are written on the side if this fix does not take care of it you need to try and order a new supply from shopp jimmy.com
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.
