Troubleshooting. Jensen XA2125, XA275, XA250

XA2125, XA275, XA250

Troubleshooting

Problem

Amplifier does not operate

(power LED not on) when vehicle and radio are on

Possible Cause

No power to +12V terminal

No power to remote wire with radio on

Fuse blown

Input level control adjusted too low

Corrective Action

Repair wire or connections.

Check connections to radio with test light.

Check fuse.

Adjust input level control.

Radio volume needs to be turned up too high for amp to work

Radio volume is too sensitive

Sound from only one speaker

Sound distorted

Blows fuses

Engine noise

(Ignition noise/static or

Alternator whine)

Protect light comes on/ amplifier shuts down

No output on channels

Input level control adjusted too high

Defective speaker

Poor connections to speaker (wire)

RCA input cable defective

Input level control adjusted too high

Speaker wires shorting together

Power wires hooked up incorrectly

Speakers blown or defective

Improper ground connections

Ground loop(s)

Amp is in thermal protection

Adjust input level control to lower setting.

Replace speaker.

Check connections.

Replace cable.

Adjust input level control.

Separate speaker wires and insulate.

Check power wire connections.

Check speakers.

Reroute RCA away from main power wires.

Reroute RCA cable.

Make sure amp is grounded to a clean, solid part of the chassis/frame.

Let amp cool down before attempting to turn back on (some installations may require a fan to keep the amp cool, especially if you are driving subwoofers with the amp).

Check speakers and/or crossovers for loose or bad connections.

Faulty speaker connection and/or crossover

Low battery voltage

Speaker impedance less than 2 ohms per channel

Speaker wires not connected to speakers properly

Input hooked up incorrectly

Make sure you are getting between 10.8-15.6 volts to the amplifier with a digital multimeter measured at the amplifier.

If you are using 4 ohm speakers you cannot have more than two speakers wired in parallel per channel. Amp will not operate into 2 ohms bridged.

Refer to pages 6 – 8 for proper installation.

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6236 XA2CH_E.p65

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