Question about Yamaha AX-396 Amplifier

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Dia Gram HELLO, Dear Sir. I Have 75+75 DC Supply Plz Give Me Diagram. I Use Transistor D1047 But It Is Damage To 10 Minutes. Plz Help Me.

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Posted on Feb 17, 2009

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My bass amplifier requires a ceramic fuse T10H250V. Where can I find one exactly like it?


hi,

Fuse breaks when it has succeeded in limiting further damage.


Check for other possible shorted electrical and electronic

components.


• Could be drive transistor , output transistor or both on the main amp.

But check for power supply and in the preamps also.


• Measure supply voltages,

• Check DC offset voltage

• Check idling current (main amp)

Isolate , and trace afterwards.

Aug 22, 2012 | Behringer Audio Players & Recorders

1 Answer

Yamaha no power


you need to check the power supply input of your amplifier using a multimeter set your tester into a dc voltage reading.then measure the power input you must have a DC voltage supply reading..open the cover check the fuse an open fuse will turn the unit to no power.there are causes of blown fuse a shorted power transistor at the circuit will blown the fuse you need to replace faulty transistors before putting up a new fuse...check also the diode at the power supply section ,faulty diode could lead to the same problem..

Sep 30, 2011 | Yamaha P-2500 Amplifier

1 Answer

My amplifier does not turn on


Dear Friend,
Is it a newone?under warranty period?if not most probable cause is a power supply circuits,you have to check your AC plug/power supply primary FUSE/On Off switch button,if not check your secondary dc fuses on its PSU circuits up to transistor regulators,.
good luck,

microhit

May 11, 2011 | Marathon DJ5000 Amplifier

1 Answer

I have an old 80s transistor 100watt Guitar amp it is making a crackling interferance noise about every 10 minuits or so Can anybody help please Chris


Need to know if turning down the master volume when it is making the noise stops the noise. If it does, the fault is in the preamp section, if not, it is in the power amp/power supply. Suspects are the power supply electrolytic capacitors.

Feb 28, 2011 | Mackie Audio Players & Recorders

2 Answers

Power indicator open but no function audio,as well as selector my unit is an aiwa nsx k880 stereo


To start with you will have to check on the power supply for the fuses, the fusible resistors on the various sub power section near the main transformer. If OK proceed to see the recitifed DC , the supply to the main controller IC the microprocessor in the front panel. You will need some basic electronics to check for the +5 volt to the mP and confirrm if it is working. replace only if confident or get help. If this section is OK then proceed to the mode selector IC to the output IC. This may require some good technical support to prevent further damage by tampering so please check this out. Good day

Jul 26, 2010 | Audio Players & Recorders

2 Answers

Does anyone has overheat problem with Behrigher EP2500 power amplifier? We had the amp for abut a year. The amp. has recently become overheat (hand burning) after 30 minutes operation. We set the gain to...


The last time I had a problem like this there was a defective transistor in the from end that was generating noise in the 30K range. Too high to hear and too high for the speakers to reproduce, but enough to put quite a load on the amp. Does this occur even with no speakers attached? If so, then put an osciloscope on the outputs and look for signals. WIth no input, there should be no output at all except for a little noise. You can also see if there is any DC on the outputs as well.

Please update this with what you find.

Thanks,
Dan

Oct 13, 2009 | Behringer EUROPOWER EP2500 Amplifier

6 Answers

Technics SU-G75


I had the same problem. The solution to me was presoldering transistor Q708. http://www.flickr.com/photos/37147023@N03/3511227679/?edited=1

Feb 05, 2009 | Technics SUV500 2-Channel Amplifier

2 Answers

Nad amp failure


Check fuses mounted near transformer . If blown check output transistor. Also check transistor transistors on small heat sink . they will cause fuse to blow.

Mar 10, 2008 | NAD C350 2-Channel Amplifier

2 Answers

Distortion in one channel


your right output component (transistor or integrated circuit needs to be replaced)

Nov 11, 2007 | Alesis RA-150 Amplifier

1 Answer

Amp problems


From the above symptom, it show that the output stage of the amplifier have some problem.The protection cct come in to cut off the amp. when the output shorted or have Dc voltage.( this is to prevent further damage to the amp. & speaker ).If you know how to repair , just check on the pwr transistor (with heat sink )or else send it to the repair center.hope it help.

Aug 21, 2007 | Harman Kardon SIGNATURE 2.1 Amplifier

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