The IC most suspect to fail in this circuit is the 4051 (IC31). I'd replce it first, before doing anything else... Am 13.04.2018 um 13:21 schrieb daviddemontis@btinternet.com [PolySix]: > Hi all > > Great group. > I`m well into a resto of my Polysix. > I`ve fitted a KiwiSix board and psu. > I have replaced the paired transitor > with a 2SC1583� 45G. > I`ve replaced the opto coupler with a VTL5C9 > and I`ve replaced the three ICs 17.18 and 19. > When measuring IC18 pin7 to TP5 I`m still > getting -13v. > Any suggestion on what to change next would > be much appreciated. > > Many Thanks > > Dave -- http://www.florian-anwander.de
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Re: [PolySix] Tunning
2018-04-13 by Florian Anwander