9/25/2023 0 Comments Hifonics amp wont turn on*I assume that you have at least 5 wires connected to your amp. As you think about it use a DMM and make sure that you are getting voltage at all appropriate locations and then let us know if it still isn't on. Give us a layout of what is connected to what and how. Without some more details it isn't going to be so easy to help you. If you aren't sure of what you are doing in the first place you should do some reading and asking and not messing. Messing with gains is not an appropriate installation technique. There is a ground wire and it is very important, to top it off the stock one sucks and shouldn't be used. Hifonics ZEUS Gamma four channel audio amplifier delivers 600 watts with. i messed with the gains and still.the led saying whether or not it has power didnt light up at all. Soft start turn-on Mono channel operation Ameritron ALS-600 Amplifiers feature. "maybe there is a ground wire in the back of the h/u isnt grounded" Phrases like " and when i pulled out the fuse in it and it shot some sparks." I see a lot of amps posted in this state. It got kind of hot, but not hot enough to turn on protection or pop any transistors. While it was shorted, the amp actually played fine but would not turn off. Avoid bending the power transistors leads once you remove the screws holding the circuit board from the heat sink.Your description of what you have done so far is scaring me. In trying to fix this amp, I shorted R116 and R216 to the chassis and now it wont power up. I suggest taking good (clear) pictures of everything before you pull it apart. This amp has huge potential, by design, but crippled by implementation. and when you unplug the wire the subwoofer works again. Well when you put the Wire back in the amplifier the light shows up on the bass knob and what not but than the subwoofer doesnt work. Activate the amp like you normally would and note what happens. (nothing to do with the hifonics) and the installer had to move my hifonics amp and unplugged the bass knob wire. Replacing the twisted output wires with OFC similar temp rated wire or even untwisting the OEM wire can't hurt either. Method 1 Locating the Problem 1 Look for lights indicating that the amp is turned on. I would recommend replacing all the screws you remove because they will disintegrate on contact. Note replacing the caps requires removing the amp circuit boards.which means disconnecting the heat sinks.lots of little bits, and heat sink paste. The best choice would be splitting the required value over several small caps connected in parallel. Replacing these caps should put you back in service.Ĭap coupled amps sound bouncy.Pulses are accelerated and then fall off.So the choice of replacement cap will effect the tonal quality of the amp. The lower the impedance of your load (speakers) the faster this will happen. Therefore if you drive high currents of low frequencies the large caps will is a very graceful failure. The two large caps form a center tap for the power supply which is connected to the speaker terminal. And it worked!! There was probably a loose connection or an oxidized lead. Plugged everything back in where is was supposed to be, and turned the power back on. Everything checked out ok, so I turned power off. Use a multimeter to check the voltages coming out of those two power cables, they should be somewhere around 70Vrms.ġ0. Use extreme caution, there is live 120V leads in areas that you can touch with your hand! I recommend using only 1 hand while anywhere near a large voltage, incase of any shock, the current wont go through your heart.ĩ. Now the scary part: unplug the power cables (yellow and orange) going from the huge inductor/transformer to each of the amplifier boards, and then plug power into the amp and turn it on. Just because your amplifier will do 1,000 watts RMS doesnt mean its the right amp to power two subwoofers that have a power handling of 500 watts each. Checked to see if any of the electrolytic capacitors had "popped tops" (if they had blown)Ĩ. Used a multimeter to check every easily accessible diodeħ. Removed and checked continuity of the power connector through that fuseĦ. Removed and checked the two fuses on each of the amplifier circuit boardsĥ. Removed and checked the front ON switch for power continuity (with power turned unplugged, just use a multimeter on continuity check.Ĥ. Plug it in to make sure it doesnt just turn on, it didn't so unplug itģ. Pray that God would be glorified through anything I doĢ. You could bring it by my church either this coming new years or this saturday night. the thing is, i had an old amp hooked up and just upgraded so i pretty much just replaced amps and used the same wiring. Is there a way we could meet up and I could take a look at the amp for you. Get a multimeter test the voltage input on the power side, test the resistance of the subs, test the voltage input on the RCA', and test the voltage output on the channels.
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