Hi. I got this hifonics taurus amp which is bein a pain. protect light comes on and i've traced the problem to the final power transistors (it uses the TIP35C MOSFETS). I replaced the faulty power transistor and when I hook it up it overheats the same component. i done a pretty detailed search around the affected area but all components seem to be intact. voltage regulators and such seem to be in order and everything else is throwing me off track.
does anyone have a wiring diagram for this sort of amp, or any suggestions at all would be welcomed.
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Re: Hifonics Taurus circuit diagra???
You need to measure the voltages at the output transistors. The previous "driver" stage may have a problem. These outputs use .6V as the bias differential. Check for DC voltage on the inputs to the transistors. These are standard designs. I'd check for DC anywhere along the signal path.
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G'day, I have dealt with Hifonics a fair bit here here in albury, we used a complete system for a competition car.
the amps are pretty solid, but they are very sensitive to wiring. I would start by taking off one set of wires at a time and see if the protect light turns off. (make sure there is no power to the unit when removing or fitting wires) so for instance, start with the front left speaker, then if not move to the front right. etc etc.... By doing this you will be able to narrow down if and where it is shorting out. if you check all your wires and the protect light is still on, i would check where you have mounted the earth cable. make sure it is a solid connection, and that there is good metal to metal contact.
if you have any further problems, or this doesn't solve your problem phone, 0413443600, and i can walk you through further trouble shooting.
oh and dont forget to rate my solution
The positives are connected together and the negatives are connected together. The two pairs of terminals are for convenience. You'd connect one speaker to a pair of positive/negative terminals and you'd connect the other speaker to the remaining pair of positive/negative terminals.
You need to confirm that you have a good signal feeding the amp. If you have another amp in the vehicle, swap the RCA cables between the amps to see if it makes a difference.
You also need to confirm that the speaker are working properly and that there are no broken connections in the wires. If you disconnect the speaker wires from the amp and touch the wires across a D-cell battery (for a fraction of a second), the speaker should pop. if it doesn't, check the wiring to determine why.
well your amplifier is obviously going into protect mode,(i used to have this amp and it is awesome) anyway i would go through just to be sure and check all the power connections with a test light, remote wire, positive, and ground. and check the fuse to see if it is still good. you can buy a test light at wal-mart and any automotive store. if you stil have a problem then i would check to see if your running below 1 ohm on this amp. that would cause it to go into protect mode. if all this fails i would just go buy a new one.