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I have a Randall RB75 Combo Bass amp. All of a sudden it stopped working - the green light in the on/off switch comes whenever the amp is plugged in no matter if the switch is on or off. I get no no noise coming through the amp. One minute is was fine hen I came back 20 minutes later and it didn't work no more. Please help.

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Mtx tna251 amp has bass remote that has a light glowing but turn knob up and down and no difference like simply not working no difference in bass? Posible causes,


It is actually in the controller, if you turn the remote all the way down and press on the controller until the bass goes off, you will be able to turn the bass up and down with the remote, mine worked but stopped after a month, I tried adjusting the amp but then I noticed that if I wiggled the knob on the remote that it would work, I mashed mine until it worked again and velcroed it to my console sonibcan get it on and off easily.

Mar 03, 2015 | MTX Car Audio & Video

1 Answer

I have a Peavey MAX 112 Bass Combo amp. When I turn on the amp and have it plugged into the cord and bass, it immediately begins emitting a "whump whump" sound similar to the sound a beating...


The amp is doing what is called "motorboating". This is usually caused when the voltages to sensitive preamp stages are inadequately filtered or regulated and the sudden load of the output stages cause a dip in the voltages sent to the preamps which in turn vary the input to the output stages starting the cycle over. This will require electronic troubleshooting and if your not skilled in that, then it is NOT a DIY fix. What you are seeing is NOT normal, there is a defect.

Apr 22, 2011 | Peavey Electronics Peavey Max 112 Bass...

2 Answers

Would a bad Flasher relay cause the brake lights not to work?


The flasher does not stop the brake lights from working. Check # 18 fuse in fusebox under lower left side of dash. if it's ok, the brake light switch, on the brake pedal arm is next. light green wire with red stripe is hot if fuse 18 is ok. Depress brake pedal, light green with no stripe should have power. if not, replace brake light switch. If light green wire has power with pedal depressed, combination switch under the steering is next. Remove the cover from around the combo switch {under the steering wheel}. depress brake pedal, light green wire should have power. If it does, pedal still depressed, orange with light blue wire & wire with light green & orange should have power. Those 2 wires are brake & rear turn signal wires. { The turn signal switch should be in the middle, not right position or left. while checking for power in the last 2 wires. Good Luck drvolt.

Feb 06, 2011 | 2004 Ford F250

1 Answer

Cooper Industries Cooper Wiring 274W Switch and Outlet I need help installing this switch/outlet combo...I have 3 wires...a black, a red, & a copper. I hooked the copper to the green terminal, the...


Switch-plug combo:
bare ground goes to green screw
dark screw goes to hot from breaker
silver screw to neutral
brass screw goes to load (light)

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You are replacing single pole light switch?
Single pole switch has 3 wires: black and red and bare copper

New device has 4 different colored screws: green, dark, brass, silver
Bare copper goes to green screw.
Black wire goes to dark screw
Red wire to brass screw
Nothing on silver screw for a moment. Test circuit and make sure light turns on-off.
If lights works, then good so far.

Now let look at silver screw. Neutral wire has to connect to silver screw.
In back of your electrical box are white wires twisted together and covered with wire nut.
These are neutral wires.
You must connect another short piece of insulated wire to these neutral wires and run that wire to silver screw.
The neutral wire will complete circuit to receptacle.
If you do not have neutral wire, then receptacle will not work in that box without additional wiring.

Hook up neutral wire to silver screw.
Now turn on power and click switch again.
If circuit breaker trips, then reverse your red and black wires.
Otherwise this should be correct wiring.

Dec 08, 2010 | Cooper Industries Cooper Wiring 274W...

1 Answer

My humidifier all of a sudden just stopped working. Can you tell me of any common issues and their remedies for this humidifier ?


From the troubleshooting section of the manual (http://www.crane-usa.com/manuals/HumidifierManual2008.pdf):
Problem Humidifier power light is staying red and not turning green Humidifier is working than stops: ? Solution Ensure that water level sensor is assembled properly. ? Clean water float ? Call service center and request replacement water float ? If humidifier does not work at all: ? Ensure it is properly plugged into a power outlet. ? Check that the switch is in the ON position. ? If Power On indicator light does not come on, bring to authorized service station.

Nov 01, 2010 | Crane Frog EE-3191 1 Gallon Humidifier

1 Answer

I have a 500 mono. it al of a sudden is shutting off when the bass hits. the green light will flikker and go out but then come back on untill the bass hits again. thoughts?


Yes. It sounds like overmodulation, but you did not specify the volume at which the issue appears. usually loud. Check the speaker for correct ohms resistance, if not correct yoru amp will overload and thermally break the circuit, then reset...

Oct 11, 2010 | Rockford Fosgate Car Audio & Video

1 Answer

Let's find out before i get rear ended @ 70mph


Does the CHMSL ( Center High Mount Stop Lamp ) work ?

If this does not work, check the BPP ( Brake Pedal Position ) Switch, mounted on the brake pedal lever. There should be 4 wires to it, 2 are for the shift interlock, the other 2 are the brake lamp switch.

The brake lamp switch feeds direct the CHMSL and the MFS for the Stop/Turn combo lamps.

Without a CHMSL, I would suspect the BPP switch.

The wire colors on the F-150 are Light Green & Light Green w/ Red stripe for the stop lamp circuit. If you have this color combo, unplug the connector, and try jumpering the 2 together, to see if you have brake lamps.

Assuming the mechanic already checked the fuse for the BPP

Sep 21, 2009 | 2006 Ford F-150

1 Answer

Amp green then red light then nothing problem please help


It sounds like the output transistors have failed. To eliminate other possible problems, read through the following page.

Troubleshooting - Amp in Protect Mode

Let me know if you have any other questions.

Aug 05, 2008 | SPL Dynamics Z2X-1600 Car Audio Amplifier

2 Answers

Powers on but no sound


Check the main amp fuse under the hood, even if it looks good just change it. Often times that light on the amp can come on just from the power amp tunon wire. Try a friends subwoofer box just to make sure the connectors on your box are good, and if that doesn't work then give me some more details....year/make/model of car, what kind of sub, what types of things do you see on the side of the amp....is there a green light as well as a red light?

Aug 18, 2007 | Xtant A3001 Car Audio Amplifier

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