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I need a circuit diagram for a mtx 311d

I have a mtx 311d and some of the transistors beneath the heat sink are burnt beyond recognition. Can anyone help?

Posted by Attie on

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5 Related Answers

Anonymous

  • 814 Answers

SOURCE: No HT, components burnt

You can check out this website for your service information and parts: https://spares.bigwarehouse.com.au/index.php?cPath=24759_24762_24803 Paste the address in to your address bar. That will take you to the website. They had three of the four parts that you needed listed on the website 1.Q706 -Transistor bipolar FJAF5804 (TU) Fairchild $ 49.61 2. C744-Capacitor drawing SM SHR SYE/SWE 160V $ 19.06 3 R809- Resistor fixed small 1 ohm 2W 5% SF. $ 14.27 They also sold the service manual for $ 29.57. I hope this helps you with your problem.

Posted on May 20, 2009

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Anonymous

  • 26 Answers

SOURCE: Amp and sub have been working great together then

check to see if one of the RCA cables is unplugged or bad. check the gain check the sub level control on the deck if yours has one.

Posted on May 19, 2010

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caroldon

Donald DCruz

  • 17130 Answers

SOURCE: a transistor or resistor burnt

You have not mentioned what electronic equipment you are requesting the details.
You will be able to confirm the transistor value from the stage where it has burned which also goes for the resistor. So take tech help than to try with trials to damage the set much further.

Posted on Jan 31, 2011

Anonymous

  • 1 Answer

SOURCE: WANT A CIRCUIT DIAGRAM BP600.1 OR THE NAMES OF

if i can get a diagram for jbl bp600.1amp pls and ty

Posted on Feb 28, 2011

Clive Gray

  • 1479 Answers

SOURCE: need circuit diagram

We have your question and someone will answer in due course. Stop posting.

Posted on Mar 09, 2016

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I have a mtx thunder 7801 series amplifier well i got a stereo from someone and i didnt know it a the time but it had the wrong plug in the back of it so when i hooked my amp up to it what i thought was...

The short answer is probably yes... easily, probably no. If you are lucky and only have one or two shorted transistors, then you can cut the leads on those and see if it powers up without blowing a fuse. Also check for shorted diodes and burnt resistors. If all FETs (or most of) the FETs mounted to the heat sink are shorted then it is probably not worth taking the chance putting the time and money into fixing it, just to have it smoke again. Also they are likely in parallel so it is a little more difficult to determine the bad one as they may not all be bad. Measure with an ohmmeter and find the one with the lowest resistance and remove that first and keep going until you believe you have gotten them all. Normally repairs like this are not for someone with little or no experience on amp repair, but if you feel like taking it on, good luck!
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http://elektrotanya.com/peavey_tnt115s_sch.pdf/download.html

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Scroll down to "Get Manual" at the web page and click on it to download.

Please note that on the first schematic above, the power amp schematic is way down beyond the parts list and layout of the preamp section... keep scrolling. ALSO the powoer amp shows a real WIERD connection where the output transistors drive against ground and the center tap of the power supply transformer for the power amp portion then bounces around with the audio output... that is a wierd connection but it is possible.
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A transistor or resistor burnt beyond recognition i need a wiring diagram to identify the type

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You will be able to confirm the transistor value from the stage where it has burned which also goes for the resistor. So take tech help than to try with trials to damage the set much further.
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Amp and sub have been working great together then all of a sudden the amp is not putting out enough power to push the sub. MTX Thunder 311D

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Suspect an overload in either the power supply section or the devices on the main heat sink. In the power supply you are either looking at a transformer problem or semi-conductors associated with it. However since the clip and signal lights are on, I would go to the amp devices on the heat sink. If they are transistors test them with a Ohm Meter on the 1K setting in circuit even! You will soon notice which ones are gone! The meter will show like you had touch the test probes together!
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Output transistor is out in car amp

Hello nymnym999,

You did not specify which Fusion amp you have but if the insides looks like the Fusion PP-AM60020 image below, you'll have to "desolder" the transistor.

8e329a2.jpg
First remove the heat sink from the transistor case. You'll need a controlled heat soldering station, a desoldering vacuum tool commonly referred to as a "solder ******", and some desoldering braid. Be careful with the heat around other components.

After removing the transistor, use the desoldering braid to clean off any remaining solder from around and in the circuit board mounting holes. Position the new transistor and solder it to the board. Put a thin film of thermal compound on the heat sink and remount it to the new transistor. Use just enough of the compound to insure an air-free join between the transistor case and the heat sink. Reassemble the case and you're finished.

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1helpful
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No HT, components burnt

You can check out this website for your service information and parts: https://spares.bigwarehouse.com.au/index.php?cPath=24759_24762_24803 Paste the address in to your address bar. That will take you to the website. They had three of the four parts that you needed listed on the website 1.Q706 -Transistor bipolar FJAF5804 (TU) Fairchild $ 49.61 2. C744-Capacitor drawing SM SHR SYE/SWE 160V $ 19.06 3 R809- Resistor fixed small 1 ohm 2W 5% SF. $ 14.27 They also sold the service manual for $ 29.57. I hope this helps you with your problem.
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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.
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