beels wrote: 
> Yes, I tried the Xlinx reset and the other ones you listed.  Dead.
> Thanks for the suggestion though.
> 
> On another thread, I found some voltage check points I was able to pass.
> And it seems like the 5V voltage regulator is working.
> 
> I'm going to use an ESR meter to do some capacitor testing.  I'd look
> for a used replacement V3 before attempting a complete re-cap though.

Looks like a bad cap problem. A few of the SB I had showed the same
issue of frozen scrolling then suddenly uncontrollable scrolling. All
were due to unstable power supply because of bad caps. You can also try
to remove the WiFi board and see, it causes current drain issues 
If you decide to get an used SB3, don’t throw the existing one away, one
of us will repair it to help maintaining the LMS ecosystem



LMS 7.7, 7.8 and 7.9 - 5xRadio, 3xBoom, 4xDuet, 1xTouch, 1 SB2. Sonos
PLAY:3, PLAY:5, Marantz NR1603, JBL OnBeat, XBoxOne, XBMC, Foobar2000,
ShairPortW, JRiver 21, 2xChromecast Audio, Chromecast v1 and v2, , Pi
B3, B2, Pi B+, 2xPi A+, Odroid-C1, Odroid-C2, Cubie2, Yamaha WX-010,
AppleTV 4, Airport Express, GGMM E5
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