[sdiy] Looking for advice about powered reference monitor problem

[Brian Willoughby]

Even though you never moved it for 10 years, the internal heat of the power amp could easily be enough to cause stress fractures in some solder joints.

On Nov 19, 2020, at 13:33, Shawn Rakestraw <shawnrakestraw at gmail.com> wrote:
> Thanks for the comments and general direction. I believe you and genuinely hope that it is a solder joint. That would be a simple fix by relowing the joints. I can't help but wonder, would a cold solder joint suddenly form after 15 years of use and also never being moved for 10 years? I tried checking the noise floor (with my ears) and it seemed the same for both monitors. Maybe it is the input signal. I will investigate more!
> 
> On Thu, Nov 19, 2020 at 3:34 PM The SynthiMuse <synthimuse at gmail.com> wrote:
>> If you listen to the monitors with no input signal and check if the small amount of noise is the same for both monitors then that implies that there's a bad connection or solder joint on the input signal. On the other hand, if you hear the backgtound noise profile tracks the previously heard behaviour on the suspect monitor,  that might suggest an issue further up the chain on the power amp end.
>> Jimmy Moore's suggestions are good and it helps to have a known good working channel to compare measurements with.
>