Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!rex!ukma!eng.ufl.edu!wasp.eng.ufl.edu!spike From: spike@wasp.eng.ufl.edu (Spike) Newsgroups: comp.sys.zenith Subject: Have you seen a Turbo Sport do this? Message-ID: <1991Feb21.152120.19737@eng.ufl.edu> Date: 21 Feb 91 15:21:20 GMT Sender: news@eng.ufl.edu Reply-To: spike@wasp.eng.ufl.edu (Spike) Organization: U of Florida Engineering Computing Services Lines: 29 Help! I have a dead Turbo Sport, ZTC-3034-EB type. When I turn it on, it clicks, and the screen flickers, then nothing. The hard drive doesn't spin up, the flpy drive doesn't access, and yet the LEDs give me the indication that it thinks that it's on! So now I turn it off, and it appears to go through a normal power down. My first move was to load the power supply down to the specified power requirements. (this was done isolated from the rest of the machine) The power supply failed in grand fashon. I replaced the power supply and it didn't fix the problem, it failed in the same way. Now after a quick and dirty look at the diagrams it looks to me that the power uo logic is in the I/O board. I replaced that to no avail. So now the only thing left in the power system is this little board called the Power logic board. This is a small board that the external power supply and the battery both plug into. It has a few relays on it and sends power to the power supply for rectification. So I change this board. NOTHING. So my question to the net is: Has anybody seen this before? Can the mylar cpu cable cause it? cpu? does anybody have any suggestions for my next move??? Thanks in advance. Ken Gage...Care taker of Zenith Heaven, University of Florida. Brought to you by Super Global Mega Corp .com