I have an HB flat screen,but am struggling to open using RM-L812.pliz help

T'Con board fault. Check and replace it. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

The number is on top of the ic. Open unit up and read the info off of it.

default one is 12345
if u hav set your own code
1. use nokia software updater to re-install ur software
http://nds2.fds-fire.nokia.com/fds_fire/1405/1213/7361995544/NokiaSoftwareUpdaterForRetail_4.2.1.exe
2.contact nokia care

Please help me

It will be best to buy an other one instead of trying to repair this unit. The component you specified here will be very difficult to get by open electronic spare part market.

Press the AV button on the remote control. If it do not help you, make it a hard reset.

Hello wmalvinx.

in the manual they say press F2 twice.
first press will show then post screen
sec. press open the bios.

mfg Gue

Check this link for details.

Switch off the unit, remove the cord. Ope the top cover, you will see the loading assembly, just beneath the assembly tou can find a threaded shaft on which OPU is mounted, try to turn the shaft, OPU will start sliding and it will open a small window by which you can see one black belt, just skid this belt so that it turn a while, tray will start coming gently, now hole the tray from outside and gently pull it out, DO NOT apply any lubricant, You shoul dchange the belt now.

we cant fix it here, but go to service center and they will do it like this , put the cable in u'r fone , run the soft, reset your code.. gud luck..