Having an issue with my pulsar quantum lite xq23v thermal, was working perfectly when during a sit out for a fox it wouldn't turn on, led indicator briefly shows green then goes to red/orange. Assumed it was flat battery but fully charged replacement did exactly the same, both dnv batteries despite being charged, confirmed with volt meter, do the same, fresh AA batteries in the cradle, again confirmed with the volt meter also do the same, I'm thinking possibly some internal switch at fault, any ideas please?? I've tried holding the on/off switch down but no change, good contact between terminals as well

