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Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!ames!ptsfa!varian!vaxwaller!tom
From: tom@vaxwaller.UUCP
Newsgroups: comp.sys.ti,misc.kids
Subject: TI 99/4A crash
Message-ID: <735@vaxwaller.UUCP>
Date: Wed, 25-Mar-87 17:22:31 EST
Article-I.D.: vaxwalle.735
Posted: Wed Mar 25 17:22:31 1987
Date-Received: Fri, 27-Mar-87 04:11:42 EST
Distribution: na
Organization: Varian, Walnut Creek CA
Lines: 24
Keywords: garbled screen
Xref: utgpu comp.sys.ti:11 misc.kids:889



	I wonder if anyone out there in ti.netland experienced
	the problem I am having lately with my TI 99/4A home
	computer:

		It powers up fine for a game and then within
	5 minutes the system would lock up with no response
	from the keyboard or joystick and the screen page is
	either frozen or garbled up. It is certainly related 
	to heat in the circuits for it would be up longer
	when first used. 
		I suspected the video chip(TMS9918) which has
	a heatsink attached to it, so I replaced it with
	another one but the problem didn't go away .I checked
	the power supply board which is fine.

		I certainly  appreciate any help via e-mail
	and I will post a summary. My little 7-year old is 
	suffering from CWS (computer withdraw syndrome)!
		
						tom cao
					Varian Instrument
					(415)9452157