How do I troubleshoot my Samsung TV? I have sound, but no picture.

Is the TV totally dead now, no standby light?

look for blown / swollen capacitors ,mine had 6 gone so got a kit off ebay under a fiver

I had the same problem with Samsung. A web search located the issue being the capacitor. Take out the back and look for the capacitor near where the power line enter the TV. It was a 100 uF at 4050 volts capacitor. checked the DC voltage to be 381 volts. Got two old capacitor from an old TV - one was 150 uF at 400 volts and one was 220 uf at 400 volts. It turned out that it needs two in parallel (making 370 uf at 400 volts. Took out the under rated 100 uf and replaced it with these two. Checked the voltage to be 390 volts. That did the job. Samsung must have tried to save money by putting in a 100 uf at 450 volts. .

SOUNDS LIKE NEEDS POWER SUPPLY,CALL PANOSNIC CUSTOMER SUPPORT

Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Capacitors fried in power unit.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Hi,
Your TV have problem with the back light inverter board. This type of complaint can occur under two circumstances.
1.Faulty electrolytic capacitor in the power supply board
2. The back light inverter board.

If you have knowledge in electronics then check the power supply for any faulty or budged electrolytic capacitor. Have adde the picture of faulty electrolytic capacitor how it will look like. check the link. faulty capacitor .

If the are no such faulty electrolytic capacitor then you have to replace the back light inverter board. There is no repair possible with inverter board because its spares are rarely available.

You have didn't mention any model number of your TV. so its not possible to add the exact picture of the inverter board.

Ajin

your problem is more a defective y board with y buffer boards one of them is short

probably a bad T-Con board. this board is the interface between the panel and main board. call 1-800-samsung for nearest service center.