Why does it have no picture, no sound?

Likely the diodes are also blown, and are what caused the capacitors to blow.

Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.That the board,where the power a/c cord plug into it.Just look at the picture on the website and compare to ur actual tv power supply board.Replacing the power supply board is pretty easy,just take about 4 screws and couples connections unplugs.Just do the reverse to install.

Power supply board is dead.That the board,the power a/c cord go into it.Replaced the power supply board will solved ur tv power lite LED light indicator blinking and ur tv power will be stable and work again.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Power supply board is dead.The board where the power a/c cord plug into it.Replace the power supply board.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Power supply board is dead.Replaced this power supply board will fix this problems.Tries Shopjimmy.com,Ebay.com to to buy a refurbish power supply board for the replacement.

I don't think those are fuses but if something is melted chances are it won't work

If you see the back light, then you should have 24vdc on the main power supply board which it gets the turn on command from the maun board. If you do have all those voltage, then it does sound like you need the new main board.

yes 3x its lamp cover no doubt. ballast supply will give different error on this unit. this should help hdtv man

Diagnostic Item
Description
Number of times
STANDBY or LAMP LED
lamp flashes
Probable Cause Detected Symptoms
Lamp cover error 3 times - Lamp cover is not fastened securely - No picture/No sound
Fan error 4 times
- Fan1-4 Power is not supplied.(G2 board)
- Fan connector is not seated securely
- Fan caught wires or harnesses
- No picture/No sound
Temp error 4 times
- Internal temperature is too high
- IIC-E line connector is not seated properly
(WE:H3 board, WF/XS:H4 board)
- No picture/No sound
Lamp driver error 5 times - Lamp driver defect - No picture/No sound
Low B error 6 times -No "DD 6V " output (G1 board) - No picture/No sound
Audio error 7 times
- Short-circuit of Audio power supply line
(KD board, G1 board)
- Blowout of a fuse
(F4702,F4703,F4704 on KD board)
- IC failure
(IC4703,IC4708,IC4710 on KD board)
- No picture/No sound
D-OVP error 8 times
- Overvoltage of +3.3V or +2.5V
(A board, B board)
- No picture/No sound
ATSC-OVP error 10 times
-No "DTL MODULE 5V " output
(G1 board, G2 board)
- No picture/No sound
Lamp error LAMP-LED is ON. - Lamp is dead - No picture/No sound

Remove the Power Supply cable to Y Main board and check the Vs voltage in Power Supply board.
1. Vs voltage is OK, replace the Logic board or Y Main board.
2. Vs voltage is NG, replace the Power Supply board.