ROCKFORD FOSGATE X7a Amp, I need compatiable remote control knob.

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 !

check the internal fuses inside the amp its self these burn up real easy plus if it is them it will save you some money

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.

Cheers,

Kevin

Yes. Rockford fosgate has a cover over all of the connections, crossovers, and various other controls. Just remove the cover with the allen wrench they sent with the amp or find a set of allen wrenches if you don't have one. Under this cover you'll find what you're looking for.

sounds like the fan is bad and needs replacing

most likely your remote wire or remote crapped out if not its your amp itself can you adjust and play without remote? if so go to this site for info and replacement as well as tips:
http://www.rockfordfosgate.com/rftech/wire_calculator.asp

Contact Rockford for factory service.

If you don't want to send it to Rockford, ask the local audio shops who they use for amp repairs. If several use the same repair shop, it's probably a good place to send your amp.

You may have open shields on the head unit. You need to check continuity between the shield and the case of the head unit. The following page shows you how to do it.


Shield Ground Repair

In most of Rockford's amps, the low voltage detection is connected to the remote input. If the remote voltage is too low and they use the same circuit on this amp, it could trigger the protection circuit.

 

Disconnect the head unit's remote from the amp. Use a fuse holder with a 3 amp fuse to jump between the B+ connection and the remote terminal of the amp. If the amp powers up, the head unit's remote output may be defective. If it blows the fuse, the remote input or part of the power supply is damaged. Do not try it with an unfused jumper.