Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!hp4nl!swi.psy.uva.nl!jansweij
From: jansweij@swi.psy.uva.nl (Wouter Jansweijer)
Newsgroups: comp.sys.mac.hardware
Subject: broken Mac-Plus: HELP
Keywords: Dark screen, diagram wanted
Message-ID: <2350@swi.swi.psy.uva.nl>
Date: 15 Jan 90 08:53:11 GMT
Reply-To: jansweij@swi.psy.uva.nl ()
Organization: SWI, UvA, Amsterdam
Lines: 23

My four year old MacPlus is broken. Symptoms are:
	- a dark screen
	- s soft "tsjilp-tsjilp-tsjilp" sound from the transformer
	  or its immediate neigbourhood. The transformer has the
	  identification: "Coilcraft Taiwan 157-0047-A" and "F 4704-A".
	  The place on the board is marked: "B20-0107-C". It's on the
	  bottom of the sweep/power-supply board.

Can anyone tell me from these symptoms what's wrong? or else is there
a diagram available from this board so I can test it myself?

Any help is more than welcome!
Thanks very much!
--
Wouter Jansweijer	Phone: (31)-20-525.2152 (.... 525.2073)
EMAIL:	jansweij@swi.psy.uva.nl
SNAIL:	Department of Social Science Informatics, University of Amsterdam,
	Herengracht 196, NL-1016 BS Amsterdam, The Netherlands.
-- 
Wouter Jansweijer	Phone: (31)-20-525.2152 (.... 525.2073)
EMAIL:	jansweij@swi.psy.uva.nl
SNAIL:	Department of Social Science Informatics, University of Amsterdam,
	Herengracht 196, NL-1016 BS Amsterdam, The Netherlands.