OwenA Posted May 20, 2022 Posted May 20, 2022 During a game I had to change battery, the tamiya housing came off and I stupidly rushed and replaced it the wrong way and plugged in, sparks from connection and gun fails to function at all now. Tried different batteries, knowing that wouldn't work but tried anyway, hoping. Can anyone tell me the probable damage? Any experience with similar situation? I assume mosfet is bust, fuse looks ok but I read mosfet will go before fuse. Many thanks Rogerborg 1
concretesnail Posted May 20, 2022 Posted May 20, 2022 Basic fuses won't protect polarities. Unless the mosfet has its own protection then it likely dead I'm afraid. Replacement will most likely be the simple option.
OwenA Posted May 21, 2022 Author Posted May 21, 2022 No worries, as expected. Cheers for the reply Follow up question, do you think it will just be the mosfet I need to replace or is there a chance the etu is damaged also?
Supporters Rogerborg Posted May 21, 2022 Supporters Posted May 21, 2022 What gun is it? We'd just be guessing, and a very basic multimeter will take the guesswork out of it. Worse case, you can bin off all the electronics and just install a basic trigger switch. AK2M4 is fairly low on stock, but still has options for both V2 and V3: https://www.ak2m4.co.uk/internal-parts/trigger-switches ak2m4 1
concretesnail Posted May 21, 2022 Posted May 21, 2022 It likely the mosfet only if that has popped first then it should have broken the potential circuit and as a byproduct protected the etu but As Roger mentioned, knowing the rif and parts is large part of making an better guess and testing with a meter would be the only way of knowing without starting to replace parts.
OwenA Posted May 21, 2022 Author Posted May 21, 2022 Its a g&g 308 mbr with g2h etu and mosfet. I am going to test it when I get a hold of a multimeter. Hopefully just the mosfet and I will plug in a perun g&g upgrade as I've heard good things. Rogerborg 1
Supporters Rogerborg Posted May 21, 2022 Supporters Posted May 21, 2022 Ah, right. Sorry to hear this, it's always a risk with Tamiya. And yes, Perun mosfets are pretty decent, I'd consider that an opportunity to do an upgrade.
OwenA Posted May 21, 2022 Author Posted May 21, 2022 Yeah won't be using tamiya again, very cheap feeling. Deans seems much more solid.
concretesnail Posted May 21, 2022 Posted May 21, 2022 Deans are a solid bet, lots of airsoft folk use them. I tend to favour the xt connectors as I usually have a pile of them about for flight batteries and rc stuff as they are good for keeping out the damp.
OwenA Posted May 22, 2022 Author Posted May 22, 2022 Ahh nice. I've not come across xt connectors before, fairly new to all this. Cheers for all your help guys!
Supporters Rogerborg Posted May 23, 2022 Supporters Posted May 23, 2022 If I were rewiring again, I'd probably go to XT-30 or XT-60 instead of Deans, but Deans is pretty good too, and some airsoft guns are switching to it as standard now.
OwenA Posted May 23, 2022 Author Posted May 23, 2022 Ahh okay cheers I'll keep XT in mind for future. The perun is wired to deans so I'll stick to that for now. Gotta beat tamiya anyway! Rogerborg 1
Supporters Rogerborg Posted May 23, 2022 Supporters Posted May 23, 2022 Yup, Deans is just fine, although you can occasionally find a couple of connectors that don't want to match up perfectly. Still much better than Tamiya.
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