How do i fix my lcd40-270 technika?

Sounds like a power supply issue. You may find some help in a dedicated TV forum. Try posting here: http://www.badcaps.net/forum/forumdisplay.php?f=31

Here's one place you may be able to get one, if the experts on the forum suggest:

https://spares2repair.co.uk/technika-lcd40-270-psu-g0281d-v0.0

http://www.mbtvelectronics.co.uk/product/g0281d-v0-0-power-supply-board-for-technika-lcd-40-270

Or even:

http://www.ebay.co.uk/itm/POWER-SUPPLY-BOARD-PSU-G0281D-TECHNIKA-LCD40-270-/262680388062

PS. there's nothing, but nothing, about being a girlie which means you shouldn't be able to learn a thing or two about electrics - I work with enough good lady engineers to know.

XXX
December 2016