The worst has happened to me!!! Dead LD2+.....
Jul 29, 2006 at 1:33 AM Thread Starter Post #1 of 26

darknix

New Head-Fier
Joined
Jul 1, 2006
Posts
49
Likes
0
It all started this afternoon, I wanted to get some music so I turn on my LD2+ and let it warm up.
Right after it is turned on, some sparking noise start coming out of both the LD2+ and my headphone, I rushed to turn the power off and I noticed that there is a burning smell and smoke coming out of the machine.
frown.gif

I let the machine cool down a little bit and try to open the case and check the inside.
I discover there are a couple resistors blowed and burnt as in the picture:


Is there any headfier who could help me fix it?
My soldering skill is limited (close to zero) and I counln't figured out how to take the board out of the case (yes, I tried to take off all the screw on the machine and the board just doesn't get off.....).
Would anybody share how to disassemble the machine and fixing the machine?
Or kind enough to fix it for me? (Of coz I will pay for any expense needed)
Thanks in advance~~! m(_ _)m

EDIT: Photo fixed.
 
Jul 29, 2006 at 1:43 AM Post #3 of 26

kramer5150

Headphoneus Supremus
Joined
Sep 20, 2004
Posts
14,427
Likes
196
If its just fried resistors it should be an easy fix.
If however theres something upstream that caused the resistors to cook.... that could be more difficult.


I would be surprised if its not the same value as that other 4990B resistor below.

Garrett
 
Jul 29, 2006 at 1:51 AM Post #4 of 26

darknix

New Head-Fier
Joined
Jul 1, 2006
Posts
49
Likes
0
The cause of it should be the connection between the power cord and the machine, I found the plug is somehow lossy afterward.....

I tried to take off the board and see if there is anymore damages on the other side.
But I couldn't get the board off the case at all.....
 
Jul 29, 2006 at 2:32 AM Post #5 of 26

GotNoRice

100+ Head-Fier
Joined
Oct 14, 2003
Posts
410
Likes
28
How long have you had it? Have you considered sending it back for repair?

I have one on the way, kinda wish i didn't see this thread
plainface.gif
 
Jul 29, 2006 at 3:40 AM Post #6 of 26

darknix

New Head-Fier
Joined
Jul 1, 2006
Posts
49
Likes
0
I have talk to Mr. Yang and he said that I might also has a defected 4P1S tube.
Which it seems that just me having bad luck.
Don't worry, this is the first time I have hear this problem(in both chinese and english forums).
He said he'll send me those resistors and new tubes.
 
Jul 29, 2006 at 4:26 AM Post #7 of 26

kramer5150

Headphoneus Supremus
Joined
Sep 20, 2004
Posts
14,427
Likes
196
Curious, for all the tube experts....

Shouldn't there be some kind of built in protection in the amps design?


Tubes fail. Its not uncommon at all... I think my guitar amps have some kind of protection built into the circuit.

?????

Garrett
 
Jul 29, 2006 at 5:13 AM Post #8 of 26

Wil

1000+ Head-Fier
Joined
Apr 18, 2004
Posts
1,156
Likes
83
Perhaps the price range in which the LD2+ is being built in doesnt allow for one?
 
Jul 29, 2006 at 5:16 AM Post #9 of 26

BennyBoy

Banned
Joined
Apr 8, 2006
Posts
694
Likes
10
Quote:

Originally Posted by kramer5150
Curious, for all the tube experts....

Shouldn't there be some kind of built in protection in the amps design?


Tubes fail. Its not uncommon at all... I think my guitar amps have some kind of protection built into the circuit.

?????

Garrett




protection almost always has major effects on SQ.
 
Jul 29, 2006 at 5:19 AM Post #10 of 26

BennyBoy

Banned
Joined
Apr 8, 2006
Posts
694
Likes
10
Quote:

Originally Posted by darknix
I have talk to Mr. Yang and he said that I might also has a defected 4P1S tube.
Which it seems that just me having bad luck.
Don't worry, this is the first time I have hear this problem(in both chinese and english forums).
He said he'll send me those resistors and new tubes.




I'll fix it for you. Just PayPal me $27. and send the amp. I'll replace the parts and send it back to you.
plainface.gif


Paypal account is sennheiserman@gmail.com
 
Jul 29, 2006 at 5:29 AM Post #11 of 26

darknix

New Head-Fier
Joined
Jul 1, 2006
Posts
49
Likes
0
Quote:

Originally Posted by BennyBoy
I'll fix it for you. Just PayPal me $27. and send the amp. I'll replace the parts and send it back to you.
plainface.gif


Paypal account is sennheiserman@gmail.com



Thank you very much for your kindness~~~
I'll email you when I got the new parts when they're in and let you know when I send you the amp.
Thanks again~
 
Jul 29, 2006 at 5:40 AM Post #13 of 26

BennyBoy

Banned
Joined
Apr 8, 2006
Posts
694
Likes
10
Quote:

Originally Posted by darknix
Thank you very much for your kindness~~~
I'll email you when I got the new parts when they're in and let you know when I send you the amp.
Thanks again~




Anything for a fellow headFier! almost anything.
rolleyes.gif
 
Jul 29, 2006 at 5:48 AM Post #14 of 26

darknix

New Head-Fier
Joined
Jul 1, 2006
Posts
49
Likes
0
Quote:

Originally Posted by Spareribs
Yikes!

I'm planning on buying this but if it's an unstable product, I may have to look elsewhere.
blink.gif



It's part of my problem, I haven't secure the power cord when I turn the machine, this might have caused the tube to malfunction.
 
Jul 29, 2006 at 6:02 AM Post #15 of 26

Spareribs

Headphoneus Supremus
Joined
May 24, 2006
Posts
5,557
Likes
548
Secured the power cord? You mean it wasn't all the way in? It was loose?
I've never heard about this kind of problem with tube amps but alright, thanks for the info. Keep us posted!
 

Users who are viewing this thread

Top