I have a rockford fosgate 700s amplifier. In cold weather the amp will blow the fuse. Tried both 30 amp fuse and 60 amp fuse. Although I live in San Diego if it cold enough it will blow fuses.But if I drop the rear seat and expose the amp with the heater on full blast for a while like 10 min. the amp will turn on and work just fine. during the summer it doesn't really happen at all, everything will be okay. I need help. I really like this amp and can't really afford to get new stuff. by the way this amp has been hooked up to two jl audio 10w4's and to two kicker cvr12's but amp still has the same problems. Tried a different amp for a while to test wiring, but never had a problem. just with fosgate 700s. please help. thanks
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Is it the correct size fuse ? Is it the power fuse or remote ? Either way check your connections going into the amp . Try this hook your other amp to the set of wires for the rockford if that amp has a problem its a wireing problem if not chances are its an interal problem on the rockford . Hope this helps !
well if the amp works with the car off and when you start it the fuse blows then you may have alternator issues use a volt meter to check battery voltage is not above 14.5 volts
if the fuse blows when the amp turns on then most likely you have a shorted output section in the amp.
plug your ground, battery, and remote wires only and see if it turns on when you turn your radio on, if not it must have blown. wiggle or move the connection block(where your wires are connected) and see if it tries to turn on. if so, your leads need to be re-soldered since they tend to go cold(they're not making good contact). But again, if that does not help, then your amp is gone.
Short inside one of the transistors. This requires very good soldring skills and electrical know-how, and some thermal paste to go between the heat-sink and the transistor. Unfortunatly this is not a cheap repair, probably cost around 100 dollars.
Disconnect all speaker wires from the speaker terminals of the amp and disconnect the RCAs. Replace the 30 amp fuse with a 15 amp fuse. If you turn it on and it blows the fuse, it's likely that it has shorted output transistors. If that's the case, you need to have the amp repaired.