Article View: sci.electronics
Article #22310Re: Composite Colour Signal (help my sanity)
From: Michael Ardai
Date: Tue, 20 Feb 1990 21:46
Date: Tue, 20 Feb 1990 21:46
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1349 bytes
In article <507@ghp.UUCP> jim@ghp.UUCP (Jim Stewart) writes: >I have an old CGA that I am trying to get working with the composite >input to my colour TV. [Color screens show up as BW on the TV] >-- >Jim Stewart, VE3SRJ >UUCP: jim%ghp@mnetor.uucp >BELL: (416)862-0430 I had this problem on an old clone. In my case, the 14.xxx oscillator on the motherboard was slightly off. There may be a trimcap either near the expansion connectors or the CPU that adjusts the frequency. Run a color program on the PC and slowly turn the cap (in both directions) until the color locks in. Use a non-metallic screwdriver since hand capacitance will de-tune the cap. /mike \|/ Michael L. Ardai ...!sun!teraida!maven.DECNET!ardai (preferred) --- ---------------------------------------------------------------------------- /|\ ardai@bu-pub.bu.edu
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!think!snorkelwacker!mit-eddie!bu.edu!bass!ardaiReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!think!snorkelwacker!mit-eddie!bu.edu!bass!ardai From: ardai@bass.bu.edu (Michael Ardai) Newsgroups: sci.electronics Subject: Re: Composite Colour Signal (help my sanity) Keywords: NTSC Message-ID: <52494@bu.edu.bu.edu> Date: 20 Feb 90 21:46:42 GMT References: <507@ghp.UUCP> Sender: news@bu.edu.bu.edu Reply-To: ardai@bass.bu.edu (Michael Ardai) Organization: Boston University Lines: 22