Question about Boss PSA-120 (761294015735) Power Supply

2 Answers

Boss cs-3 compressor/sustanier

When using 9vdc battery,the unit works just fine, but when i plug in the psa120 boss power supply, the red power on light goes dim.. and the sound from the unit is weak and distorted.... any ideal what may be my problem.....i have two units that are doing the same thing......

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,554 Answers
Re: boss cs-3 compressor/sustanier

It is likely that the power supplys have blown diodes or capacators
and there is too much ac in the signal ,
or the power supplys you have don't have enough wattage to power the units cleanly. did they ever work.
instead of using a power supply with 300ma or so use one that has 500ma or better 1 amp even.

Posted on Mar 09, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: boss cs-3 compressor/sustanier

Hello! I'm having the same problem with my Boss CS-3. Was it the power supply that was the problem?

Posted on Mar 26, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

How to recharge superex jumpstart/compressor

Plug in the cord with the switch off. If the battery is still good in the unit then it will take a full day to charge. If you charge it for a full day and you still have nothing the battery is bad. If this is a new unit, check to see if it is under warranty.

Sep 06, 2014 | Superex Canada Ltd Emergency Jumpstart...


Laptop is plugged in but says it is running on battery.

You have your laptop plugged in but when you check it says that you are running on battery. Or, you have your laptop plugged in and it will not work because the battery is dead.

Both scenarios depict a broken power port on the laptop or possibly a bad power supply. Checking the power supply is easy. Using a DMM on volts DC set to 20 place the red lead on the center pin and the black lead on the outside of the plug assembly. If you do not have the correct voltage as listed on the power supply then you need a new one. While holding the leads on the power plug wiggle the wiring to make sure there are no breaks. If the power drops to zero at any time you need a new power supply. A good site is .

Many times people do not realize that their power port is broken until it is too late. If you continue to use your laptop after the port is broken you will destroy the power supply portion of the mainboard and it will cost you half as much as the laptop cost to repair and may make it not worth fixing.

When you realize that your laptop is not running on AC power, and it could be intermittant, you need to immediately take it to a repair facility to get the jack replaced. The average cost should not exceed $150 US.

This is not a repair procedure that I can walk you through. You can only get your unit repaired at an experienced reapair facility.

Thanks for using FixYa and for the great rating. Please consider a testimonial. Thank you.


on Nov 13, 2010 | System Power Supplies

1 Answer

Boss diagram

the 2 power lines to supply batery and black to ground blue to speaker

Jun 07, 2014 | System Power Supplies

1 Answer

Why does my LJ44-00125a PSU led blinks 6 times?

Look in the power supplies unit and look for bad soldering points and electrolytic capacitors who have a swollen top.

May 26, 2014 | System Power Supplies

1 Answer

The green light is blinking on the supply unit but it not coming on or booting up , i need to know if the supply unit is bad

Close examination of your power supply may reveal if the psu is bad.

When the power supply is plug in ac socket the green indicator led inside the motherboard will lit steady green. See if by turning on the cpu you will see some sparks in the power supply connector attached to the motherboard. This is a clear indication of a bad or shorted psu.

You can also smell if there is a burning inside the psu.

See if the fan inside the psu is working if not then its a clear indication of a bad psu.

Using a multimeter if you have one measure the dc voltage coming from the supply connector. Insert the black probe to one of the black wires in the connector. And the red probe to the red wire in the connector. the reading should be +12VDC. Put the red probe to the red wire and it should read +5VDC. Any readings below this, means bad psu.

Measure also the output voltage when there is a load in the power supply. Connect a CD-ROM drive or hardisk and measure again the voltage. Dropping of voltage when put some loads is a clear indication of a bad power supply unit (psu).

I hope this will help you.
Thank you for using Fixya!

Jan 11, 2011 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer


test the power outlet then

clean your computer of dust using a fine air blower from a compressor specifically around your central processing unit making sure there is no moisture in the air line

as dust will cause a lot of static which will make a computer overheat and cause lots of problems then test your computer battery or replace battery

hope this helps

Sep 26, 2010 | Compaq System Power Supplies

3 Answers

Computer won't power up

loose connections to the motherboard, not having the power cord plugged in all the way, fried power supply, there could be alot of things, try the loose cords, or look inside the computer and check for loose cords.

Jul 13, 2009 | System Power Supplies

3 Answers

Iomega HDD2H Exteral USB/Firewire Drive

Exactly right. This has happened to me on two occasions, renew the power transformer and that will solve your problem.

Sep 08, 2008 | System Power Supplies

1 Answer

Power indicatoror

From the manual:

"Attach the barrel tip of the AC Charging Adapter to the AC Charging port of the POWER TO GO® and plug the standard two-prong plug into an appropriate, functioning 120 volt AC outlet. The red Battery Status LED indicator will flash, indicating a proper connection has been made and the unit is charging. The green Battery Status LED indicators will gradually light as the charge level rises. The POWER TO GO® must be charged for approximately 11-17 hours prior to first use. All Battery Status LED indicators will be lit solid (the red indicator will stop flashing) when the unit is fully charged.

Aug 29, 2008 | Black & Decker Power To Go Cordless AC/USB...

3 Answers

Mx35 no power

Hi, can you use a multimeter? If so then check on the power suply what the voltage output should be for that unit. Then with the power turned on GREAT CAUTION MUST BE TAKEN AT THIS STAGE AS TESTING THE WRONG END COULD CAUSE ELECTROCUTION use the meter to test the laptop end plug only and see what power output you have. If you can not do this then take the power supply to a technician and have it tested. If ok = dead battery, if not replace power unit. Regards mistyman

Sep 01, 2007 | Toshiba PA2502U - Libretto 100, 110,...

Not finding what you are looking for?
Boss PSA-120 (761294015735) Power Supply Logo

Related Topics:

250 people viewed this question

Ask a Question

Usually answered in minutes!

Top Boss System Power Supplies Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers


Level 3 Expert

5660 Answers


Level 3 Expert

18259 Answers

Are you a Boss System Power Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides