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The Melos Modification Thread

Jun 18, 2007 at 2:28 AM Post #242 of 279
aaarrrgh My Melos gold ref just crapped out on me, I think it is part of the warm up circuit that went as the power light does not come up but the leds on the board light up.

Well time to find a tech, I just want to upgrade the sonics on the headphone section what caps are the ones to replace is it just the one inbetween the tubes? I had thought about vcaps or maybe jupiters but I worry about the sability of the jupiter caps in that heated environment.
 
Jun 18, 2007 at 2:40 AM Post #243 of 279
Quote:

Originally Posted by dsavitsk /img/forum/go_quote.gif
I replaced all the caps, and while the amp still "works" I seem to have created a signal generator of some sort. Looks like it is time for some diagnostics on this thing. sigh


what kind of noise? Generally when that happens I'd guess loose ground first, that'll cause a buzzing like no other if it's in the right spot...

Go back and re-solder all the grounds.
 
Jun 19, 2007 at 1:17 AM Post #244 of 279
Quote:

Originally Posted by jp11801 /img/forum/go_quote.gif
aaarrrgh My Melos gold ref just crapped out on me, I think it is part of the warm up circuit that went as the power light does not come up but the leds on the board light up.

Well time to find a tech, I just want to upgrade the sonics on the headphone section what caps are the ones to replace is it just the one inbetween the tubes? I had thought about vcaps or maybe jupiters but I worry about the sability of the jupiter caps in that heated environment.


I stumbled across this today...

http://www.melosinnovations.com/Home_Page.html

If you just go to http://www.melosinnovations.com/, you still just get the front page. Go to that link, and you get what looks like a makeshift home page... but it does have contact information
smily_headphones1.gif
.
 
Jun 27, 2007 at 2:43 AM Post #245 of 279
Jun 27, 2007 at 2:50 AM Post #246 of 279
Quote:

Originally Posted by Computerpro3 /img/forum/go_quote.gif
what kind of noise? Generally when that happens I'd guess loose ground first, that'll cause a buzzing like no other if it's in the right spot...


No, it's not ground noise. Something is slowly oscillating -- likely a leaky cap. It is not clear where it is, but I think I am going to rip out the warm up stuff as it has wires and leads running all over the place (and contains one of the few original caps) and shorten the signal path a bit. I may also take out the input switch for the same reasons.
 
Jun 27, 2007 at 2:52 AM Post #247 of 279
Quote:

Originally Posted by jp11801 /img/forum/go_quote.gif
has anyone tried these guys yet?


I am working on it. I need a replacement front panel for the one USPS buggered up, and I figured they may have dead units lying around they can yank one off of. Sent a letter via snail mail today. Ill update if I hear back.
 
Jun 27, 2007 at 4:05 AM Post #248 of 279
Quote:

Originally Posted by Gil Schwartzman /img/forum/go_quote.gif
I am working on it. I need a replacement front panel for the one USPS buggered up, and I figured they may have dead units lying around they can yank one off of. Sent a letter via snail mail today. Ill update if I hear back.


possible email contact at http://www.networksolutions.com/whoi...nnovations.com
 
Jul 9, 2007 at 5:55 PM Post #250 of 279
Is it normal that the melos sha-1 power cable is grounded? Mine is but when I opened the case actually only two cables were connected.

Im thinking of just cutting one of my old power cables and soldering it to the amp, so I don't need an USA->EU adaptor. Is that wise? Is it possible to ground it?

I just recently bought this, and the owner converted it to 230V for me (I got now idea how he did it)
 
Jul 18, 2007 at 9:44 AM Post #252 of 279
There is a business in Atlanta,,, Modular Audio IIRC,,anyway,e-mailed the guy,,he said that he does repairs and mods/upgrades ,hopefully I'll be speaking to him today. Edit; His number is 770-642-6259,his name is Benny,and he'll be back on thursday 7-19-07.
 
Jul 18, 2007 at 3:12 PM Post #253 of 279
Quote:

Originally Posted by sedan delivery /img/forum/go_quote.gif
There is a business in Atlanta,,, Modular Audio IIRC,,anyway,e-mailed the guy,,he said that he does repairs and mods/upgrades ,hopefully I'll be speaking to him today. Edit; His number is 770-642-6259,his name is Benny,and he'll be back on thursday 7-19-07.


Might have to give him a call and see if I can track down a dead unit through him.
 
Jul 18, 2007 at 11:22 PM Post #254 of 279
Quote:

Originally Posted by Gil Schwartzman /img/forum/go_quote.gif
I stumbled across this today...
http://www.melosinnovations.com/Home_Page.html
If you just go to http://www.melosinnovations.com/, you still just get the front page. Go to that link, and you get what looks like a makeshift home page... but it does have contact information
smily_headphones1.gif
.


hmmm, when i go there there's no contact info.
 
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