Heard a popping sound unit turned off power light blinks four times. Replaced power supply board, power supply board now blinks ten times and unit will not turn on.

Panasonic 46 TC P46G10 TNPA4783AC Main Board Unit

Sounds like the secondary power supply lines. I would contact sony for an estimate.
Thanks,
lee

More specific, please ! Finally, did you replaced all bad capacitors or only replaced the power supply unit ? Because there are many other capacitors on other places that can be damaged.
Sure, the problem seems to be from one of the capacitors, but you have to know how to find the damaged one (and with the proper instrument will be more easy). Howewer, to buy a good instrument is more expensive than to service your TV set (my opinion). Plus guaranty.

Could be either or both. The power supply board probably gas an electrolytic capacitor that has failed. Same goes for the main board. When you can hear a pop, you'll be able to visually locate the failed part. Capacitors must have a flat top on them. Any bulging or domed capacitors need to be replaced.

The tv power supply board is the causes and the problems.That the board,where the power a/c cord plug into it.Power supply board probally have dying capacitors parts.Dying or dead capacitors are alway bulging or puffing up on it tops.U have all the tools and understanding basic electronic also can do basic soldering?Check the power supply board carefully for dying or dead capacitors and replace it with new capacitors with same Micro ferid and the voltages higher 5 or 10 voltages higher for better heat resistance.Or try website like Ebay.com to buy a whole 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.

plug it in

Flashes 10x - power supply board shorted.

replace power board i have one to sell 573-433-1925

It sounds like either Y-sus or the X-sus pcb. These are usually fixed at board level and can be quite expensive. If your in Australia Speedy Spares in Melbourne should be able to supply these Boards. They are located on the left and right hand side of the panel and will be connected to the panel through smaller sub PCB's. The x and y sus boards are about 30cm x 20cm in size.