There was a similar submission with regard to the amp not putting out any sound. The blue Led's come on but the green power led does not come on. There is no sound and protect mode is not lit either. All I get is the blue LED's. I have had this amp for about 18 months and never pushed it too hard. It has always worked fine. I removed all the wiring and checked the fuses. No indication of damage, wear or burn in the unit or the wires. Totally confused here. Can you help?
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Re: Amp Stopped working.
I would suggest checking the unit for cold solder joints or bad solder joints. The onlt hope after that is a bad component. You will need a schematic and multimeter to do this with. Open the unit and measuer the main rail voltage this will provide the data you need to troubleshoot the unit with the use of the schematic.
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use a multimeter to see if the amp has good power wire and remote turn on voltage. then check the ground and make sure its a good strong ground. check the sub to make sure its not bad. make sure it reads whatever ohm its supposed to. anything less than 4 ohms will clip the amp if bridged. if alll that is good then the only thing left is the amp. it sounds like the power supply is bad but check everything else just to make sure. good luck.
well... you have to wire the sub correctly to the amplifier to get good sound.. you could be giving it like an 8 ohm load and this will cause the amp to put out barely anything at all.. www.the12volt.com and the subwoofer wiring diagram willl tell you all you need to know...
It sounds like part of the power switching circuit has failed. Your options would be to have it repaired/replaced or to try to repair it yourself. If you want to try to repair it yourself, visit the following link and then respond here. You will need to have the amp powered up and you'd need a multimeter to measure the voltage at several points on the board. A good quality photo of the circuit board would be helpful.
This is common when the output transistors have failed. The amp powers up and the amp senses a problem and goes into protection mode. Generally, there is a protection LED but not all amps have them.
To be sure that the problem is not installation related, check the DC voltage across B+ and ground when the amp tries to power up. If the voltage remains above 11 volts, the problem is almost certainly due to a failed component in the amplifier.
Disconnect the signal lines and all speakers (disconnect the wires from the amp terminals) and try to power it up. If it powers up, you could have a defective speaker or defective wiring. If the amp still fails to power up, the amp should be checked by a qualified tech.
Have you opened the unit to take a look inside? Since you dont have a blown fuse we cans assue the a short has not occured. Now I would chect to see if the voltage regulator in the amp has voltage coming from it. It may not in that case you may have to remover the old regulator and put in a new one just to get to the point of properly troubleshooting this amp. I would suggest that you get a schematic for this unit and use a multimeter to look at the voltages in the power supply section and see which sections have no rail voltage (12v supply voltage). I would also advise checking the remote to for regulator failure.
Check the amplifiers fuses. Some amps have speaker fuses that leave the LED on if blown. Check for continuity on the voice coils of both subs. Check for 12 volts on the remote turn on line from your receiver. If all of the above are good, the amp is probably toast.
are you absolutely certain your subs are in good shape? have you put a meter on them and measured the ohms as you depress the cone [causing the cone to move up and down on the pole of the magnet? do the ohms stay constant? go up to infinity[ suggesting an open] or go to zero or close to zero [ suggestting a short] both of these conditions will result in a zero or a very limited output from your amplifier, while still showing a green status light, if or when a full short or open occurs on the subs, a fault led will become lit, and whet that means is that u have fried the outputs....do a bit more testing with your vom....and good luck or try another speaker for testing purposes...