Question about Sonic Impact Technologies Super T 1-Channel Amplifier

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Did RCA plug short cause channel loss on Super-T amplifier?

I put a DIY interconnect on the Super-T amplifier. The plug shorted as the screw down for the center connector rotated and made contact with the barrel when I installed the plug. The channel stopped working when I installed the plug and no longer works. A change of interconnects does not help. Could the shorted plug have caused the channel to fail?

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Hi...

If the plug in question is an input, No the channel isnt damaged but you'll need a new connector. If it's an output , it may have shorted the amplifier output.

Posted on Jan 02, 2009

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Hi my adcom 5802 get right Chanal not working . I don't know why every time I put 2 fuse for that Chanel is burn st thing look like diot ... And after that 2 fuse burn too


If I can read you right you are saying that the device keeps blowing the fuse?

Fuses blow when there is an overload. As it is an amplifier we are dealing with the cause is more than likely a shorted output transistor or more than one, or whatever does the main amplification for the device. These devices are located on the main power amp board attached to a heat sink. If the amp has fuses for each channel then you only need to replace the devices on that channel, with the fuses blowing on it. The cause of shorted devices is often bad speaker wires or them touching.

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Amplifier shuts down


Biggest cause an overload in the power supply or main output stages. Your perhaps looking for a shorted device. It might be burnt or damaged!

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I am trying to bridge two macrotechs 1200 and I am getting a loud huming noise . No sound. Just that noise. When I run them in stereo mode they work perfectly fine. What causes that?


Let's review the setup procedure and precautions. This is for bridging the amplifiers within a single box.
  • The mono-stereo-bridge switch must be in bridge position
  • The input signal must be connected only to Channel 1. NOTHING should be connected to Channel 2.
  • The Channel 2 level control should be turned all the way down. Turning it up will amplify common-mode noise.
  • The + speaker terminal is connected to the red binding post for Channel 1 and the - speaker terminal is connected to the red binding post for Channel 2. Neither side of the load should be grounded.
  • There are no connections to the black binding posts. They should not be grounded or shorted together.
It does not seem practical to bridge or parallel two MT 1200 boxes; it would be very difficult to get the levels and offsets precisely matched. If they aren't matched, you will get oscillations or common-mode amplification - that is your humming noise.The bridging switch makes six changes to the circuitry to get the amplifiers properly interconnected in one box so this won't happen in the recommended configuration.

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1 Answer

One channel blown


Unfortunately there is little we can do directly. The output transistors are likely to be shorted on the bad channel. This is not a DIY repair for most people. Expect a repair bill in the $80 range for parts.

Dan

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1 Answer

There no sound coming from my main and center speakers also cant figure how to used da coupler set up


The manual is apparently non-existent online so I only have this pitcure to use for reference... http://www.canuckaudiomart.com/view_images.php?cat=Amplifiers&catnick=amplifiers&cfid=113149&image_id=837646

The jumpers must be in place for tthe internal amplifiers to use those channels. Removing them allows you to feed external amplifiers to drive those channels. Lacking the original jumpers just place some short RCA cords in.

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Looking for shorting pins for technics model su-v98-km1


You can make it by yourself. All you have to do is to shorten a pair of RCA cord to about 2 inches and then plug them into the
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I am having a problem with my crown k2. As soon as I flip it on the lights go up but then click and it shuts down. No enable light on. I have to unplug it for a bit to get it to do the same thing again....


Most likely the thermal protection device is tripping due to a short circuit. Under a no load condition this is usually caused by one of the power amplifier transistors being shorted internally or a bypass capacitor shorting internally. One would have to test the components to determine the source of the failure.

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1 Answer

Blown fuse no sound in one channel


The only way this could happen is either the wires touching or a capacitor overheating and shorting out, Also hardly bumped or dropped would cause loose solder connections. Wich you should check eitherway

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1 Answer

Lost one channel on the Sonic Impact Super-T amp


YES!
The output device on that channel will have blown. Look at the output device for that section by following the leads back from the plug, Anything with a heat sink on it is the best bet for the fault.

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This could be caused by a few things. The cable could have a short in it so try it out on a different guitar. If it works the jack on the guitar could have a loose solder joint. This is usually caused by putting stress on the cable and causing the jack to move.

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