old tokyo marui m4a1 carbine, intermittent problem

[mimozine]

hi guys, dusted off my old tm m4a1 carbine, got it when it was first released so quite a few years old now. its got a grenade launcher and custom metal folding stock fitted.

anyway attached battery and fired it a few times in semi, worked fine then nothing. wiggled the battery wires about and it worked again. any idea what i should be looking for?

thx

andrew

 

[Sitting Duck]

motor connections - hmmm - maybe but depends what/where wires were wiggled

very loose tamiya connections - or around fuse ?

loose wire inside box/switch - hmm doubt it

think any joins/connections should be checked first, could be a little corrosion on a loose connector/join is most likely

normally a thin spade connector at front handguard is a good place to start

might have pinched some wires in past so that could be next thing to look for

folding stock so presume ya battery is up front - check for loose corroded joins & pinched wires

also check motor connections in pistol grip - nothing too difficult just common sense and elimination

 

[Avionyx]

My Brother in law just had a very similar problem. Turned out to be the selector plate, got a new one for £7 and job done.

Could be worth checking?