Tip & How-To about Car Audio & Video

Car amplifier troubleshooting

No output:

  • Confirm that all terminal strip connections are firmly connected.
  • Check in-line and built-in fuses. Both +12V and RMT terminals must have +12V to chassis ground.
  • Confirm that signal source ( Car Radio/Deck, EQ, X-over etc) is connected and is supplying output signal.
To confirm that Amplifier is working, connect an RCA patch card to LEFT& RIGHT low-level inputs of Amplifier only ( Do not connect the other end of the patch card).Briefly tap the center pin of each ( disconnected) RCA plug on the other (disconnected) end with your finger. This should produce a noise (feedback) in the speakers.

If this tip in anyway helped you please do not forget to rate it, thanks.

Posted by on

Car Audio & Video Logo

Related Topics:

Related Questions:

1 Answer

Help with 12v Frontier timer


This is Intermatic PB series timer module adapted for various applications, often low-voltage AC and DC loads. Copy following links for specific wiring diagrams:
http://waterheatertimer.org/How-to-install-under-counter-water-heater.html#fm
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#PB1
http://waterheatertimer.org/How-to-wire-TB118-TB178-timer.html#fm
Timer can be wired for numerous applications.
Power is connected to terminals 1 and 2, jumper wire is connected from terminal 1 to terminal 3.
Load wires connect to either terminal 4-5, and to terminal 2.
For loads greater than amp rating, use timer to control contactor. Add line fuse to protect timer from overampping.

May 04, 2013 | Hardware & Accessories

1 Answer

Tempeture hand on gauge rises and falls as you accelerate and slow down. Also rises and falls when you turn on the internal blower in the car. The engine does not appear to be overheating.


The problem you describe is likely being caused by the dashboard earth (ground) reference moving as the 12v power system current draw changes.

Ensure battery terminal post connections are in good order, clean and firmly connected,
Ensure the all chassis, alternator, engine and dashboard ground connections are intact and in good order.
Ensure all dashboard loom connections are properly connected,
Check alternator output voltage (battery terminal voltage) is approx 14.5 volts with engine running, while loaded with headlights or blower motor running.

If all above is ok, the dashboard internal voltage regulator supplying the instruments may be faulty (unlikely - do all other checks first).

Oct 13, 2009 | Hyundai Santa Fe Cars & Trucks

1 Answer

battery is fulling charge, altantor is new, but have no power what could be wrong


Check battery terminal posts are clean and firmly attached,
Check +12v supply fusible link (and/or in line maxi fuse) is not blown,
Check battery ground and chassis ground connections are in good order.

Oct 07, 2009 | 2000 Chevrolet Blazer

2 Answers

how to trouble shoot starting system 98 ford crown victoria


Also check to see if there is power in the start wire form the ignition switch, the wire is a white wire with pink stripe, most likely not a common problem, but still something that could go wrong. this wire will feed the starter relay under the hood...

Sep 21, 2009 | 1997 Ford Crown Victoria

1 Answer

91 900s Looses power, won't run through puddles/sudden power loss


Check all battery terminals and 12v power feed connections are clean and tight.
Check all battery chassis and ground connections are also firm and in good order.
Check any in line 'Maxi' fuse connections are firm.
Check for water ingress in any cable loom or bulkhead connector exposed to the water spray.

Sep 21, 2009 | 1991 Saab 900

Not finding what you are looking for?

608 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4834 Answers

yadayada
yadayada

Level 3 Expert

74945 Answers

The Knight
The Knight

Level 3 Expert

73619 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Loading...