@Joseph-TP Yes, the noise relates to a particular Deco unit. The serial number is 22042U0C00926 but the units will be outside the warranty period. Any assistance to resolve the issue would be much...

One of my Deco units has been making a twittering / squealing noise for some time now. Having read a number of threads, the issue seems to be the two 16v 470uF capacitors. I opened my unit up but...