Shouldn't be too difficult to troubleshoot; have you got the manual? Start by checking the 24V > 12V regulator...
m ----- Original Message ----- From: "Jim Brain via cctalk" <cctalk@classiccmp.org> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Sent: Monday, July 13, 2020 2:18 PM Subject: TM848 repair? > Anyone on list repair or rehab Tandon TM848 drives? I have a 4 or so of > the slimline drives from some Tandy Model 12/16b units that don't seem > to spin at all, and I've hooked them up to the same PSU that a TM848E > successfully runs on, so I am guessing it's not a PSU issue. (Though, my > understanding of 8" drives is extremely minimal, so...) > > If I could get just 2 of them working, that'd put a few 12/16b units > back in operation. > > Jim > > -- > Jim Brain > br...@jbrain.com > www.jbrain.com >
