Stax 727 Voltage Conversion 100 to 117 (Help)
Mar 17, 2015 at 2:02 PM Post #16 of 31
That Spritzer mod is actually regularly talked about throughout the Stax thread. Many people feel that it is absolutely necessary to perform it, in order to make the 727 sound as it should. So if you're going to do anything, I'd suggest you try that first. Disclaimer: haven't heard any 727 myself.
 
Mar 17, 2015 at 2:06 PM Post #17 of 31
  That Spritzer mod is actually regularly talked about throughout the Stax thread. Many people feel that it is absolutely necessary to perform it, in order to make the 727 sound as it should. So if you're going to do anything, I'd suggest you try that first. Disclaimer: haven't heard any 727 myself.

 
The long >1000pages Stax threads are a chaos. They could be used as an algorithm benchmark for google search engine :)
 
Mar 17, 2015 at 2:07 PM Post #18 of 31
You're absolutely right, and it doesn't help one bit that there are also two older Stax threads before the current one. The only way is to keep following them, so you don't miss anything.
 
Mar 17, 2015 at 5:14 PM Post #19 of 31
my version of  727 model. I don't find the 150K resistors for the classic classic spritzer mod. 
 

 

 
May 20, 2015 at 11:32 AM Post #21 of 31
I see the 150k resistors, they are 1%, just like the previous pictures.
 
still local feedback loop
 
May 22, 2015 at 12:07 PM Post #23 of 31
  Hello KG, I'm kinda clueless but they're very clearly missing compared to a previous picture:
 

 
Were they moved topside, If so could you point where?

 
This is an "artist's rendition" that has the offending resistors crossed out and the new resistors superimposed on the board. You need to remove the two 150k resistors on the back of the board and then add two new ones with leads going to the proper traces.
 
May 22, 2015 at 4:16 PM Post #24 of 31
This is an "artist's rendition" that has the offending resistors crossed out and the new resistors superimposed on the board. You need to remove the two 150k resistors on the back of the board and then add two new ones with leads going to the proper traces.


Or just carefully desolder the end of each of the two resistors that is closest to the traces, gently lever up a little, and solder some resistor leads to the trace and the lifted end of the resistor, makes it an easy reversal if needed.
 
May 22, 2015 at 8:19 PM Post #26 of 31
The problem i would think with that is they are glued to the boards. Maybe you can pull them up without them disintegrating, not sure, maybe a hotgun to soften the glue. But I would doubt that this fellow has a desoldering iron anyway.


There was no glue on my 727a which I bought new mid last year. I just used a soldering iron and a thin bladed screwdriver to gently lever the resistor up at one end, it literally took less than a minute. I put a small piece of insulation tape under each to make sure there was no shorting on the traces. It really is a very easy job, if you have ever soldered before its really not at all difficult or daunting, and results are well worth it.
 
May 22, 2015 at 9:11 PM Post #27 of 31
There was no glue on my 727a which I bought new mid last year. I just used a soldering iron and a thin bladed screwdriver to gently lever the resistor up at one end, it literally took less than a minute. I put a small piece of insulation tape under each to make sure there was no shorting on the traces. It really is a very easy job, if you have ever soldered before its really not at all difficult or daunting, and results are well worth it.

Well that certainly makes life easier. They must have stopped using glue at some point. Amarphael's pic looks like he has the glue on his.
 
May 22, 2015 at 11:18 PM Post #28 of 31
That's not my pic, I took it from the other place. So if the two resistors that are superimposed in that pic are not there to begin with, that makes sense. Thanks for clearing that up.
 
Now if only somebody can illustrate the voltage conversion to 220V-240V as the in the previous page that would bring this thread to perfection. Near-perfection would be just the correct color code... :)
 
Nov 13, 2018 at 3:46 PM Post #29 of 31
preview-and-share
My first time soldering wire, that’s soo ugly.
Did I finish it correctly? The first step is to connect the purple and blue wires to the converter right?
 
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