I just recently purchased a Pioneer SX-5560 (SX-750 in black) and it has the hum issue that seems to be fairly common in these models. After reading some threads it looks like there are some capacitors that go bad and need to be replaced in particular C17 & C18. On ebay I found a listing for a Pioneer SX-750 hum repair kit. Link below: https://www.ebay.com/itm/Pioneer-SX-750-Hum-Repair-Kit-Capacitor-Upgrade-High-Quality-Receiver-Recap-Set/113423664131?hash=item1a6893c403:g:AxMAAOSw9g1cBu9N:rk:1f: Do you guys think its worth it? How difficult would it be to install the kit? Is there an easy way to get to the underside of the power board without disconnecting a lot of wire connections?