Re: Some PAL/NTSC c64 problem ...maybe (fwd)

jbevren_at_starbase.globalpc.net
Date: 2001-03-30 22:11:48

The c-64 has a cap, or is it a pot(?) near the video chip on some models. 
You might want to try tuning that, with the power on, to see if you can get
a color signal from the machine.  The 6569R3 _is_ a pal IC, and your c64 IS
set up for pal, but I'm guessing your 1084 should be able to display PAL
without problems.  I could be wrong, since I dont own such a beast ;) (I use
a computer with tv out and tv in to rescan pal)

On Fri, 30 Mar 2001, [ISO-8859-1] Marko Mäkelä wrote:

> Hello Adrian,
> 
> I'm forwarding your question to the cbm-hackers mailing list.  Hopefully
> someone (Nicolas?) is able to help you.
> 
> [Additional information: the video chip is 6569R3 or R5, and the crystal
> is 17.734472 MHz.  So, this should be a PAL machine, but perhaps the
> frequency is a little off, and thus no colors are displayed.]
> 
> 	Marko
> ---------- Forwarded message ----------
> Date: Fri, 30 Mar 2001 08:42:06 +0200
> From: "[iso-8859-2] Adrian Jankovský" <adrian.jankovsky@vsb.cz>
> To: Marko.Makela@HUT.FI
> Subject: Some PAL/NTSC c64 problem ...maybe
> 
> Hi Marko,
> i have following problem: I have c64 (board assy n.250425) with Made in USA
> on back of machine, which looks like being assembled in 1985. Memory
> location 678 is saying '1' which i think should be PAL machine. Jumper on
> board (Short-PAL , Open-NTSC) is shorted (connected by Cu-Wire). But when i
> have connected it to TV (which is capable of displaying NTSC signal anyway)
> picture si grey scale only !!, even when connected by DIN output (Video out
> pin) to video input of Commodore 1084 monitor picture is still grey scale
> only (no colors). Where is problem ?? (i also notified that startup of
> machine lasts little longer than normally ..black screen about 2sec and then
> startup ..basic 38911 etc ...).
> Thanks in advance.
> Adrian
> 
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