Just to add, if you have a Buzz still with the inputs both shorted, then the amp has a problem, and needs to be looked at.
Cheers George
Cheers George
Bazaar buzz
I don’t have any shorting caps. All I know is: no IC’s connected = zero buzz/hum two IC connected to amp but NOT preamp (just hanging loose) = buzz/hum - loud in dB. Also if I move an IC around buzz/hum changes a bit in intensity. two IC connected to amp and preamp = buzz/hum - lower in dB but definitely there one IC connected to amp and preamp, but the other not connected at all = Zero buzz/hum. |
Get some shorting rca’s plugs (not those stupid rca caps) it’s the only way "you" are going to find out if it needs a tech to look at it. Both channels should be quite when these are in. If not see a tech. https://www.ebay.com.au/itm/Onkyo-TX-DS989-Stereo-Receiver-Parts-Original-RCA-Shorting-Plug-Noise-Terminator/173848128831?hash=item287a27ed3f:g:x74AAOSwkNFclo7J&frcectupt=true https://www.ebay.com.au/itm/RCA-Shorting-Plug-for-Vintage-Fender-Pro-Reverb-Amp-No-Need-for-a-Footswitch/174113224229?hash=item2889f4f625:g:5C8AAOSw5VFWMAHP&frcectupt=true |