I checked every thing and my amp powers up and works fine but my speaker outputs are screwed up i think. How do i repair those? I hooked up another amp and the subs work fine of the same wires. My best guess would be my speaker outouts are shorted but i have the slightest idea on how to fix it. Thanks
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try to trace your problem inside the main circuitry of the jacks ( open it and see on the solder side of the Printed circuit board(where all the electronic components and soldered/welded if there are loose connections (small cracks... use magnifying glass if you have one) then solder them. also check for the transistor amplifiers and output capacitors.... check also for the connectivity of all wirings!
You have some speaker wires crossed or shorted. inspect the speaker wires for shorting (cat/dog /mouse chewed em up?). You can also disconnect the speaker wires and plug them back in one at a time to locate the shorted one , should you be unable to determine which wire is shorted.
disconnect the speaker wires from the amp, and check for power. there is no resetting, other than simply turning the amp off and back on. if it powers up fine without the speaker/sub(s) connected, check your wiring and check the ohms with a meter. if you do not find a problem there(should read within 1ohm of how you wired it) then check for dc voltage coming out of the speaker terminals on the amp. should also check that the amp is getting good power and ground. if wiring and speaker(s) check out okay, then the amp is damaged. if you get dc voltage from the speaker terminals, the output transistors are shorted out and it needs to be repaired by a tech.
FIRST DISS-CONNECT POWER FROM RECEIVER.... DO NOT ATTEMPT ANY SERVICE / TROUBLESHOOTING PROCEDURES TO ELECTRICAL DEVICES PRIOR TO REMOVING ELECTRICAL POWER SOURCE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Now that the power cord is unplugged we can start. We shall start this repair by doing the easiest tests/checks first. That DOES NOT MEAN that just because the test is easy, its not very important.... every recommendation to follow is JUST as important as the next! (even if what is asked to be checked sounds un-important... its not! Follow this advice and YOU WILL RESOLVE YOUR ISSUE! TRUST ME... YOU WILL FIX THIS issue & before the days over.... SMILE & BE HAPPY! OK...... lets get started) First lets Check the power cord... unpluged? Sure hope so! Now the first thing that you have to do is check ALL the speaker connections at both ends!!!!!!!! (@ speaker & Receiver) Be certain ALL connections are tight & that NO strands of wire are shorting out the connections by touching each other...... the ends of ALL speaker wires must be seperate from each other at all times!!!! Each wire must ONLY be connected to one post/connector!!!!! Only ONE speaker should be connected to each terminal.... do not connect additional speakers to connections at any time!!!!!!!!!!! ONLY ONE can be applied to EACH OUTPUT TERMINAL!!!!!! If the speakers your using are fuse protected check fuses or circuit breakers accordingly. One open circuit (unconnected output terminal) or shorted (wires touching together) will immediatelly trigger receiver to SHUT DOWN!!!!!!! Receiver MUST have a load (speaker) connected to each speaker output to operate properly. Should all wires be found connected properly after checking at both speaker terminals & receiver terminals & problem is still accuring after reapplying power....... additional resistance checks must be made using an OHM Meter (available at most harware stores). If one of the speakers being used has burned out / gone bad / broke...... the only way to determine this condition is via a resistance measurment. Disconnect the speaker wire from the back of each speaker prior to doing resistance check!!! (a false reading will be observed if the speaker wire is still connected during this test) Now touch each of the two speaker terminals with one of the meter leads (the meter must be set to OHMS or RESISTANCE during this test for proper reading). The resistance reading observed should be NO LESS THAN 3 OHMS & NO MORE THAN 10 OHMS !!!!!!!!! Should the resistance/ohm's value of any speaker being used / connected to the receiver be found by the OHM Meter to read LESS than 3 OHMS = speaker shorted... MUST be replaced! Should the resistance/ohm's value of any speaker being used / connected to the receiver be found by the OHM Meter to read MORE than 10 OHMS = speaker open.... Must be replaced! Connecting damaged speakers to any receiver for a prolonged period of time WILL DAMAGE RECEIVER!!!!!!! Speaker resistance MUST be between 3 & 10 ohms to avoid damage to output transistors in receiver.... when receiver senses less than a resistance of 3 or more of a resistance than 10 @ ANY speaker terminal during operation................. IMMEDIATE AUTOMATIC SHUTDOWN OF RECEIVER WILL OCCURE!!!!!!! You've got a bad speaker or a loose speaker wire or a shorted speaker wire...... check each of your speaker connections/terminals & you'll find your problem! When you do find a loose or shorted wire associated with the speakers......... you'll have found your problem! Trust me.... you CAN do it!!!! and when you do... you will SMILE !!!!!!!! & be HAPPY!!!!!!!
I would suspect if the amp is known to be good, that someplace you have a shorted speaker wire... possibly someplace the insulation is cut through or maybe you have a bad connection with frayed strands shorting out the speaker. Use an ohmmeter to check the resistance between each set of speaker leads and then to ground.
Check for a short circuit in the wiring of the output speakers or a shorted speaker voice coil, also check for correct voltage to the POWER AMP while in use... when an AMP goes in protective mode this means two things A SHORTED OUTPUT or A INCORRECT VOLTAGE TO THE POWER AMP. if all the above is OK than the AMP is defective. are you using correct speakers OHMAGE 4, 6 8ohms??? according to your AMP.
What leads you to think you fried the power supply in your unit? While touching the speaker wire to the chassis is never a good thing it should not have fried the power supply. Might have opened a fuse in the speaker circuit. Have you checked all the fuses yet? Try that first and get back to me and make sure the unit is unplugged before you open it up!!!
Hello hexi_86, The amp is going into protection mode. If it goes into protection immediately upon power up, either the amp itself is defective or it is getting too high or too low of a voltage or current, or the outputs are shorted. 1) Make sure that the battery voltage, as measured at the amplifier?s +12 volt and ground terminals, is 11 volts or more (your alternator voltage is typically about 13.8 volts). So if you have 11 or less at the amp terminals, your wiring is too small or defective. 2) Check all +12 volt and ground connections. 3) The use of loudspeaker impedances below the recommended minimums will cause the amp to draw excessive current. Check by removing the speaker wires one at a time to locate a shorted wire or defective speaker. 4) Check all speaker connections. 5) Remove RCA inputs and see if the amp powers up properly. A shorted or grounded RCA cable can cause the amp to go into protection. If all these check out, the amp itself is probably shorted internally, most likely the output MOSFET's. In this case it needs professional repair or replacement. Hope this helps.