Jumped into the car this morning and turned on the ignition, stereo came on as usual. Managed to stall the car at the junction

, turned off the ignition the restarted the car, only this time the stereo didnt come back on

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Ive checked the fuse box and also the 10amp at the back of the head unit all are ok, it lights up when the sidelight/headlights are turned on. Any ideas
