Stereomour II build issues

Josh.G · 1701

0 Members and 1 Guest are viewing this topic.

Offline Josh.G

  • Newbie
  • *
    • Posts: 8
on: September 25, 2016, 10:38:15 AM
Hello, long time reader, first time posting.  Thanks for the many hours of reading!  I am having some issues with my Stereomour, and thanks for your help in advance

I finished building my Stereomour II, resistance checks were great.  I was checking the voltage and everything was right on the money until I got to teminal 29.  When I touched the lead to 29, there was a spark so I unplugged everything and looked for shorts or anything touching anything it shouldn't.  There weren't any visible so I then checked resistances and the fuse.  Both were fine so I turned it back on and checked everything again.  This time all the voltages for the right channel were off (the left is fine).  I looked through everything, it looks like the 130ohm resistors for the right side are blown and I really don't know where to go from here.  Any help would be greatly appreciated, thanks so much.
-Josh

-Josh Graser


Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 19316
Reply #1 on: September 25, 2016, 11:46:26 AM
Post the voltages that you have which aren't in agreement with the manual. 

Saying that the voltages are off could mean that a voltage that's supposed to be 200V is 0V, or 400V, both are "off".

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Josh.G

  • Newbie
  • *
    • Posts: 8
Reply #2 on: September 25, 2016, 12:16:19 PM
Thanks for the reply, here are the terminals that are not reading how they should:
1  0v
2  0v slowly increasing
6  2.8mv
7 -.74v
21 2.6v
22 2.6v
24 2.6v
25 2.2v
27 -2.8v slowly decreasing
30 2.7v slowly decreasing

Thanks again!
-Josh

-Josh Graser


Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 19316
Reply #3 on: September 25, 2016, 12:25:32 PM
That confirms that likely a 130 Ohm resistor is open or no longer connected, most likely the one from the middle rear terminal strip to terminal 30.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Josh.G

  • Newbie
  • *
    • Posts: 8
Reply #4 on: September 25, 2016, 01:00:59 PM
I get an error when I try to test the resistance from 44-30 and 27 to 30 (31-34 and 31-44 both give me around 129ohms) and the same when I test the resistors individually.  Should I just change those two resistors and see what happens, or is there a possibility of another issue that caused those to fail?
-Josh

-Josh Graser


Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 19316
Reply #5 on: September 25, 2016, 01:07:59 PM
I would change those two resistors, then recheck your voltages.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Josh.G

  • Newbie
  • *
    • Posts: 8
Reply #6 on: September 25, 2016, 01:42:28 PM
I'll let you know how it goes, thanks again!
-Josh

-Josh Graser