Sg552 AEG electrical prob.

[frontlinesniper]

Ok... i just got a s552 from buyairsoft (yea its cheap but i got it.). Anyways i was using it out of the box after charging the battery it worked perfectly fine. Set it down on the table... next day it doesnt work! wtf? I am a noob at this stuff but i was hoping someone could mabe help me out. I have tested the battery and it is working perfectly fine so it has something to do with the motor or wiring, (is my guess). Also does anyone know if theres anybody on Vancouver Island that can do airsoft repairs and possibly teach me some stuff so i can do my own diagnostics and repairs...?

[Gigaknight]

Well, if you pulled the trigger and it wasn't working, did you hear any noise coming from the motor? If you did, it means your gearbox has seized; this sucks if you're new to AEG's.

Also, what is your battery rated at? ie. 8.4v 1100Mah

[frontlinesniper]

uhh, there wasnt any noise... but the battery is a 8.4v 1100mah. (standard with the gun.)

[Gigaknight]

Hmm, check your fuse, it could have blown, the fuse on my MP5 blew about two weeks ago and I was so confused as to what could have caused my gun to stop firing...

The noises made by my motor just before it stopped was a the normal motor sounds, except they just slowed down and then it wouldn't fire.

[frontlinesniper]

thanks a lot man, it was the fuse... i didnt even think to check that haha.

[Gigaknight]

Yeah, you can replace it with a 20amp but I THINK you can go for a 30 amp fuse; I might be wrong so you'll have to look around or ask someone here.

If you don't already know, you can get them at hardware stores or Canadian tire, pretty cheap.

Hope you get your gun up and running soon.

[CDN_Stalker]

Or you could go with NO fuse and not have any ill effects on your gun. I've seen guns with a 15A fuse shed gear teeth, totally fragging the the internals of the mechbox making the gun useless, and still the fuse was intact. The fuse really only protects the wiring so it doesn't burn, aside from that there's little reason to have a fuse in an airsoft gun (unless using a LiPO battery, i'd rather rely on a fuse than have the gun catch fire next to my face.)

[kalnaren]

Originally Posted by CDN_Stalker

Or you could go with NO fuse and not have any ill effects on your gun. I've seen guns with a 15A fuse shed gear teeth, totally fragging the the internals of the mechbox making the gun useless, and still the fuse was intact. The fuse really only protects the wiring so it doesn't burn, aside from that there's little reason to have a fuse in an airsoft gun (unless using a LiPO battery, i'd rather rely on a fuse than have the gun catch fire next to my face.)

The fuse does offer another failpoint, but a properly wired fuse should offer next to nothing in the way of electrical resistance, so why not leave it in?

[dpvu]

Unless you're REALLY short of room, I recommend leaving the fuse in. A fuse blowing is easy to diagnose and easy to fix. It can also be bypassed in a pinch if you need to during a game for example. A gun with a 15A fuse is just as likely to shred gears/pistons etc. as one with a 20A, 30A or no fuse. A fuse protects the motor and wires from drawing too much current which creates a lot of heat. While not necessary, it's one small thing that can save you a lot of trouble.

You should also look into how/why your fuse blew. Your mechbox might have seized. In the future, if your mechbox begins to slow and no longer cycles, don't hold the trigger down and keep trying. That's how you increase the current draw and blow the fuse.

[Crunchmeister]

I've had 1 fuse blow from trying to turn over a partly compressed mechbox. Best way to avoid this is to fire the gun once or twice in semi before putting it away. That ensures that the mechbox is fully decompressed for next time. It also increases the life of the spring. Having a spring costantly compressed will cause it to lose its stiffness, resulting in lower velocity.