Samsung UN55D6050 will not power on

when TV is plugged in red light starts to blink and back light flashes. Red light blinks two times and repeats five times then the back light flashes. I have played with it all day and no matter what I do same result. Disconnected power supply no visual problems caps all looked good no burnt areas. powered up PWR SUP attached leds they flash. Jump pins 16 PWR ON and 12 GND no more flashing. is there is anything else I can check before I replace the power supply BN4400424A

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Clarification Request
Are you using the service manual?

The US versions are up for sale at and most techs would be lost without them. I know I require them for issues like yours. If you are trying to do without the manual or spare parts it's usually a dead end.

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Thanks for responding

I have looked at everything I could find on the world wide web. This TV was going to the trash. You can buy used on ebay for $100.00. I have fixed Samsung monitors before by replacing capacitors that were fried. I have found a Power Supply board for a good price but if it goes like what I have seen on the internet people have replaced all the boards by service technicians and spent $100 of dollars and they still were unable to repair. So I guess I'll just trash the TV

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Today I see the service manual runs about 12 dollars.

For folk that are in the repair business they either get the manual, have it or know the basics of what to look for. I'm seeing a lot of help me fix my TV posts where folk dismiss the need for a service manual. I know I can't do without them.

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