Peugeot 106 xs electrical starting problem

I am asking on behalf of my brother who has a problem with his peugeot
106 xs , now and then it doesnt seem to want to start(its just dead)
there isnt a problem with the engine as it apears to be electrical ,
an auto electrician has looked at it and charged over 100 pounds ! but
the problem came bak , any of u lot got any ideas ?

 

First thing check the starter motor.and ALL the earths. it sounds like
the starter is playing up. when it dos it again tap the starter motor
and try that.and spend time checking the earth leads.

 

Yes tell your bro' to get his 100 notes back...

 

Tapping the starter motor might help - a few times. Otherwise find the small
connector on the starter motor and connect a wire between plus on the battery
and this connector. CAUTION; Leave the gear i neutral and don`t touch
anything on the chassis with this wire, while it´s connected to the battery.
If the motor works every time doing this, you may need to install a relay to
activate the starter relay. Yes - it maybe sounds strange, but the switch you
operate by the key (sorry what`s that called?) might be worn, and cannot
carry the needed current for the starter relay.
Had this problem myself in my Visa GTI and solved it with a relay.