Bottlehead Forum
Bottlehead Kits => Stereomour II => Topic started by: Josh.G on September 25, 2016, 10:38:15 AM
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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
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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
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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
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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.
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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
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I would change those two resistors, then recheck your voltages.
-PB
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I'll let you know how it goes, thanks again!
-Josh