The lights have all started flashing after a power cut , is there a way to reset please

It appears to be an Australian unit. We are in North America, so this link might work better for you. The first thing you can try is cutting the power for 5 minutes, AKA a 'power reset'.

https://www.google.com/search?q=BRAEMAR+BM320+reset

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ther should be a total reset for this dryer , goto the site for a manual and do a reset , this should work even look on youtube good luck

Check the lamp it may need to be replaced, how many times does the 'red or 'green light indicator flash? Also try doing a reset on the TV, there's a very small pin-switch on the front panel 'reset' push it in upon power-up see what it does.
If this helps please rate:-)
http://tvtechwork.webs.com/

I would suggest disconnecting the battery, I do not know if you will have to enter a code for the radio, but this will reset everything and fix you problem, it will only take a minute then you can reconnect the battery

The modem is faulty try hard resetting the modem with the reset button beneath the modem else replace it.

alarm may be in battery back up mode when power is lost it will automaticly start running off these batteries that are usually located in the panel. diffrent devices have diffrent ways or restoring regular mode. i would contact the maker.

Try connecting it to the PS3. After the 4 leds start flashing, disconnect the power from the PS3. Re-connect the power. That usually resets that for me.

Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

The reason the light flashes, is because the tv is still on, that is the fan is cooling off the lamp. It will go off after about 1 minute. This is normal.

You have a thermal problem in your start up. Radio shack sells a chemical called component cooler that can help you isolate this problem. Power your set up to operating temperature.Then cut it off spray one section of the start up circuit to cool it off then try to power up your set. If it doesnt power up try a hair dryer on the section you just cooled and try powering it up. If it powers up you found your problems. Hope this helps. Let me know if you need any additional advise.