After couple hours of use the screan will go black and power led will flash. If left unpluged for a while (2-3) hrs and is pluged back in it will work again for a short piored of time. I was guessing that is was a bad compasistor but cant figure out how to remove the cover of the monitor. this is abouta 2yr old synaps mt9bbk

You probably have one or more burned-out electrolytic capacitors in the power supply. Any competent electronic technician can replace them. The capacitors are usually priced between $0.40 and $2.00 at major electronic component distributers such as Digi-Key or Mouser Electronics. Make sure the replacements are selected for long life, high temperature rating and high ripple current. I use Panasonic FR1 series or United Chemi-con EKZN series capacitors for this application.

Burned-out electrolytic capacitors usually have the top of the can domed out instead of flat, and may have brown or black stuff leaking out of the vent scores. The photo below shows two typical capacitors with black plastic sleeves around the can. The one on the left is good, the one on the right is bad.

Hi,

Initially, have you tried a full hard reset? If not, pls unplug from the mains. Most current devices would reset and revert back to factory default settings (assuming no internal hardware fault) when unplugged for a considerable period of time (a couple of hours).

Pls post back for any development(s) or even the lack of it.

Hope this be of initial help/idea. Good luck and kind regards.

Thank you for using FixYa.

Since you have had 2 seemingly unrelated symptoms it is almost sure you have had a power board failure. If you post back with the complete model number we will try to check everything and see what we can come up with.
Thanks/Mike

Sounds like the motherboard. Do you get any Beep codes?

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

try some of the solutions on this link hope one will work for you. http://www.docs.sony.com/release/KDL32S20L1.pdf look under troubleshooting for no picture good luck

The power LED Flashing AMBER indicates the power supply in the tower has failed and needs replacement.
You can get a replacement here:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817165004

try using a different flash level

ok you have defective power supply in hotside section! maybe they have abnormal oscillation!

 

the power board is bad