Question about Alpine Amplifiers & Preamps

1 Answer

Blown output drivers

Does anyone know where to purchase output drivers for a Luxman LV 105 amp.
K405 and J115.  They have a 7 on them????

Posted by on

  • 1 more comment 
  • gkilburn Feb 17, 2009

    Would it be possible to buy a set from of 2SK405 and 2SJ115 from you, and I can do the work?  It would save on shipping.  

  • gkilburn Feb 22, 2009

    Any luck finding anything?

  • gkilburn Feb 28, 2009

    Thanks.  I'll try the fix.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,175 Answers

The transistors are 2SK405 and 2SJ115.

I fix Luxman if you dont mind sending to Vermont.

Cheers ( I hope that helps)

Posted on Feb 16, 2009

  • Scott Frye
    Scott Frye Feb 17, 2009

    From one of the DIY groups I use:

    For 33V rails use IRFP9140 for P channel, IRF240 for N channel (yes I know one is 100V the other 200).

    I'm currently trying to get a couple of each of the 2SK-2SJ ..Get back to me on friday + I'll let you know how I fared.


  • Scott Frye
    Scott Frye Feb 25, 2009

    I lost the bid on the original parts...( Grrrrrrrrr)
    but I hope the above DIY helps


×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Samson SX1200 - Protect light on. No blown output transistors.


Have you checked the power supply section? Also look out for any IC's in the amp stages. They can go causing that kind of fault.

Oct 11, 2014 | Samson SX1200 Amplifier

2 Answers

Crest audio cpx1500, one channel not working ,


The breaker is stuck because there's some internal circuit problem on the amp. Something is tripping it i.e. a wiring short or blown speaker driver if they're connected, or an output transistor has blown.

Fix the problem BEFORE trying to reset.

Switch all off. Disconnect your speakers from the power amp. Switch the amp back on. If it will reset now then you have a wiring or speaker issue. If it won't reset then the problem is something broke in the amp.

Transistors are part of the circuit board. They're soldered in and also bolted to heat sinks. Not a DIY fix unless you know what you're doing. Take the amp to a repair shop.

Sep 04, 2014 | Amplifiers & Preamps

1 Answer

Crest audio cpx 1500 , one channel stop working ,


The breaker is stuck because there's some internal circuit problem on the amp. Something is tripping it i.e. a wiring short or blown speaker driver if they're connected, or an output transistor has blown.

Fix the problem BEFORE trying to reset.

Switch all off. Disconnect your speakers from the power amp. Switch the amp back on. If it will reset now then you have a wiring or speaker issue. If it won't reset then the problem is something broke in the amp.

Transistors are part of the circuit board. They're soldered in and also bolted to heat sinks. Not a DIY fix unless you know what you're doing. Take the amp to a repair shop.

Sep 04, 2014 | Amplifiers & Preamps

1 Answer

I own a Aragon 4004 mkII. Recently the the banana plugs on the right speaker output touched bridging a contact. The amp had been turned on and left on for up to 10min with this short occuring. Now the...


Tough one. I repair these for a living. A number of possibilities exist. Likely output transistors are blown on the bad channel. Fuses are likely blown. If the fuses are BLACK inside, don't just put new fuses in, more damage WILL occur. This is a bit more than 'good with a soldering iron' will fix. You need to know how to test an output transistor. You need to look up the transistor type so you know what it is. A service manual will be a big help (I could not find one online.) If more than two outputs are gone on the one side, all should be changed, they are supposed to be MATCHED. Remove and replace all damaged outputs, or replace them all if two are blown. Find the driver transistors and check them for short circuits. After repair, start the amp on a dummy load of a 250watt light bulb to prevent destroying the amp if there is a problem. If you are unsure of any part of this, find an electronics technician to help.

Feb 20, 2012 | Amplifiers & Preamps

1 Answer

LUXMAN L-85V AMPLIFIER LOW VOLUME


Make sure that you have the turntable connected to the PHONO input. If there is none (I don't know your specific model), then you will need a phono pre-amp. Connect the output of the pre-amp to tape-in or Aux in and the unit should work as expected. The alternative is that you may have the tape monitor turned on. Check that as well.
This unit is old enough to have pre-out and amp-in connectors on the back. Make sure that those are connected to each other. Use standard RCA cables.

If none of those resolve the problem, there is an internal problem that will need a bench to resolve.

Dan

Oct 26, 2009 | Amplifiers & Preamps

1 Answer

I have a luxman m-117 the left channel stops working


Hiya, the first thing that comes to mind for me is the bias setting is incorrect. This is a common mod done by many people that often leads to bad things! The good thing is that it does sound likely as everything is OK at this point (hopefully).

I suggest it goes in to be checked and get someone who knows amps to set the bias correctly. I would advise you try (unless you have a bit of experience with meters etc) as things can go bang.
The bias setting for the amp are 0.5mv between TP1/TP2 and same on other channel TP3/tP4

Hope that helps

Jul 25, 2009 | Amplifiers & Preamps

1 Answer

Luxman LV-111 Home audio amp chatters at power-up.


Hi....

Check on the speaker connections. Make sure theyre firm at both ends. Do you have another set of speakers you can try on it? If so,try that too.
The chatter is the speaker protection relay.

Let me know...Thanks

Mar 31, 2009 | Amplifiers & Preamps

4 Answers

Luxman LV 105 Amplifier gone dumb


Hi: If the Amp has an audio output transformer, check for bad solder connections to the pc board, This are the wires from the transformer to the PC board. Another place to look is the earphone connection plug. If the jack has a bent contact inside of it, you will have all sound cut off. Good Luck.

Al

Mar 09, 2008 | Carver PM950 Amplifier

1 Answer

Channel short


Hi there, sounds like you may have a short to ground on the output transistors. Does it have transistors or an IC output. It is most likely that you have not replaced a mica washer or insulator. Check to ground with a meter from the case of the output devices.

Aug 24, 2007 | NAD S300 Amplifier

1 Answer

No right channel output


Feed the amp with the left channel preamp to the right channel input on amp and check output. If you get output from amp then pre amp nedds to be checked out if still no output then amp is suspect. Randy

Feb 16, 2007 | Bryston BP-25 Amplifier

Not finding what you are looking for?
Amplifiers & Preamps Logo

Related Topics:

277 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alpine Amplifiers & Preamps Experts

 Grubhead
Grubhead

Level 3 Expert

4590 Answers

SHARCNET-USA
SHARCNET-USA

Level 3 Expert

2124 Answers

John
John

Level 2 Expert

473 Answers

Are you an Alpine Amplifier and Preamp Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...