I plug it in to mains and all that happens is a white light comes on on front panel it also flickers every now and again?

Hello ? Is there any sound?

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Sounds like main board fault. Contact the authorized service center for Philips. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

is there any sound? Did you order the exact main board part # as your original board?

Ok t-con board is connected to main board which is giving signal and logic supply.. If the main board failed or giving a over voltage to the t-con it possibly your T-con gone out (new) again.

To isolate the problem try to replace the main board.

you lcd tv not setup problem. that" s main board gone in. you need a tachnician for it.

Does it show menu when pressed? If not, can you see the backlights flicker when tv is switched off?

Sounds to me like bad caps on the power board or main board.

The monitor is faulty for sure. Bring it back to the shop and tell them the problem is still happening and ask them to leave it on connected to a computer overnight since it takes a while to happen. They should see it happen and then troubleshoot it further.

Flickering lights might just be caused by loose wires in the mains plug on the machine's power cable. I would suggest checking that first - for some reason the neutral wire seems more likely than the others to come loose. There might be brown / purple marks around the terminal inside the plug if this is the case. Also try replacing the mains fuse in the plug.

While you are there you might also try plugging a normal table lamp into the socket you use for the machine - if the house cabling to the socket is defective the lamp should flicker too.

If neither of these ideas is productive, the problem would appear to be within the machine, so please ask again. Good Luck D.

Sounds like the logic boards on its way out