Question about MTX X Thunder 702X Car Audio Amplifier

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I bought a couple of mtx 702's from a guy as a project for school. They were both broken, from what he said. The first 1st one was labeled by the guy, having syptoms of only soft noises coming out of the speakers. I have not powered up the amp to check for myself, but inside there are a couple of solders loose on a capacitor, and there seems to be another capacitor blown. Do you know what the cause of this would be, or have any other ideas of what the problem could be. that is all that i can find inside that even looks close to being a problem.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: My amp light is on but no sound from speaker

If the amp light is one and the protector light wasent on then I bet you blew your speaker??? take an ohm meter, measure each speaker with nit disconnected from the amp.. If they all measure what there suppose to( like 4 to 8 ohms) then the amp blew out and unless you have training on solid state electronic repair, you should seek a pro to fix the amp for ya.. Good Luck

Posted on Jun 28, 2006

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  • 631 Answers

SOURCE: mtx 1501d

There are a lot of problems that can cause the amp to apply DC to the speaker terminals.

Before we go any farther, you should know that this amp stores enough energy to kill. When power is applied, the transistors must be clamped to the sink. After removing power, you MUST wait for ALL LEDs to go COMPLETELY out.

You need to CAREFULLY measure the DC voltage from leg 1 to leg 3 of all of the output transistors (the ones you changed). Post a list of the voltages and circuit board designation (FETxyz) for any that read more than 1v.

Do NOT let the probes short to other pins or to the heatsink when measuring the voltage.

Remember... High voltage and lots of stored energy. Be careful.

Posted on Apr 17, 2008

  • 631 Answers

SOURCE: mtx 1501d no sound

There are a number of things that can cause it to act as you described. Have you pulled the covers off of it yet to see if you can see any problems?

If you do, disconnect power from it and don't touch ANYTHING on the board when ANY of the 3 LEDs (2 are not visible from the outside) are lit.

Posted on Aug 19, 2008

  • 5 Answers

SOURCE: Mtx TC-6001 Amps Problem

I had same problem with a TC6001 and get solution from MTX, not send to MTX instead MTX kindly sent a quotation for parts to be replaced, I can tell you what parts need to be replaced if you still need a solution.

Posted on Dec 29, 2008

  • 1 Answer

SOURCE: my mtx thunder 1501d car amp making noise in the subwoofers

This is common with pioneer head units, the rca jacks are not properly grounded and this lets engine noise come through the rcs cables. This thread explains a fix http://www.caraudio.com/forum/showthread.php?t=337644.

Posted on Jan 03, 2009

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