Protect light
Could be shorted output devices or an open trace on the board.
Hey, I got a rf
Check the RCA plugs where they mount to the board and make sure the shield ground pins are not broken. If in tact a regulator might have failed not allowing power to the op-amps.
Head unit beeps in my boat.
It is a low voltage warning beep. They will beep even with the slightest voltage dip. Very annoying. You may be able to go into the set up menu and turn it off or lower the volume of the beep.
Rockford Fosgate
If it is the power supply use IRF3205 and change the gate resistors to 47 ohm. Also replace the 4 power supply drivers.
Rockford t20001 bd amplifier no sound.
Disconnect your subs. Chk the impedance with an ohm meter. They should read apx 4 ohms or 8 depending on woofer. If they chk ok chk the remote turn on for voltage when system is on.
My Friend put A Rockford
Your friend has damaged his amp. The power light coming on means that the amp's power indicator LED is at least working. That light is only there to tell you that the amp is receiving power on it's 12 volt rails, not that it's necessarily using the power in any way other than warming up the amp's internal circuitry. When you say the amp gets power, I'm not clear on whether you mean the amp works in that fashion, or there's just a red LED glowing but nothing else happens. The amp needs to be repaired, and I would suggest to him to not apply power to it again until it is checked by a professional. The power supply has probably been damaged, and it's possible, depending on how the amp was mounted, that it was searching for ground through the amp's chassis if it was screwed into metal at its mounting location. All that seems certain as of now is that the LED works, but nothing else, unfortunately. If you need further help, I’m available over the phone at
https://www.6ya.com/expert/reginald_bec291de192ca44f
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