I have just bough a blaupunkt 43inch tv and it wont come on! A red and blue light is flashing but no menu just a black screen

Question edited for clarity, your television is 'Nordmende', not 'Norfmende'.

Time for a new one, but try the power reset first as mentioned here.

The standby light on my nordmende tv keeps flashing

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Sep 27, 2012 - Unfortunately, the symptoms you are experiencing (flashing power/status light, tv won't power on) are generally symptomatic of an internal ...
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How to fix my nordmende tv as blue light is flashing and ...

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Its the power supply board, capacitor(s) have gone. Solder on new or replace board. source: 26" lowry tv red and blue standby light flashing and tv wont turn on?

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  My nordmende tv model nmh077fhd blue light is flashing ...

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  Normende tv red light wont come on Nordmende tv blue light flashing Nordmende ... said: nope. will turn on and work fine until the screen dims, goes black.

Start by getting some voltage readings on the power supply, are you getting the command from the main to enable PWM on the power board? If so do your power supply voltages look normal? If not, replace the power supply if they look ok look at main board issues, also be sure all connectors are seated correctly

I'd start with a replacement main board

I would order the correct remote control for it and send the other one back as it doesn't work properly.

Hold down the menu button on the top or side of your TV for at least 10-15 seconds. An on screen menu will appear asking you to enter the time, date and location settings. Follow the onscreen instructions, and once completed your TV will reset to factory settings.

remove all input cables now switch on your tv after on press menu and go setting display next restore it

if it was succesfull youre done

Cheaper to replace than fix, trust me on this.

I do not know this TV but my reaction would be to unplug any external monitors so its working just its own, then turn it off (by the mains) wait five minutes then turn on and see if anything has changed.
If not then see if you can get the menu up, if you can find its system reset/ restore to bring it back to when it was new, this will mean you will have to reset things but it might clear any other issues.
Should that fail then I suspect its graphic IC has failed which will be a new TV because modern sets are not worth repairing beyond about 3 years less so for the real cheap types, due to technology moving on which results in older models losing value very quickly.

Hope this helps..........

Sounds like the problem could be in the power supply of the TV. Have a technican check for defective capacitors if you're not equipped to do the job yourself.