From: Mikael Holm (mikael.holm_at_se.danskebank.com)
Date: 2003-02-07 09:46:18
Hej Spiro and all... I also read further down in Ray's document that a faulty power supply could cause this malfunction... Is this correct? I will test the computer with another power supply first, before trying to find out how to look for shortings with a multimeter... (Mainly because I don't know much about how to do that...) //Mikael ----------------------------------------------------------- Mikael Holm email@example.com Hello Mikael, Mikael Holm wrote: > I just received a C128 (220v PAL) and when I powered it up it just > displays garbage on screen. All it displays is some random graphics (not > really characters, but rather strange patterns) with different text and > background colors. And all this is flashing and changing. And it won't go > to C64-mode when I hold down the C=-key while turning the power on. [...] > U11 315012-01 (8721) PLA (Programable Logic Array) > No bootup in any mode. In 40 columns: blank screen, white screen, > light blue screen (no border), random checkerboard pattern or flashing > "garbage" characters. That could be the problem. > U18 390059-01 CHARACTER ROM > No characters. Startup has border, but "garbage" where characters > belong, or entire area inside border just lines or blocks. I don't think so, since C= (for 64-mode) does not work, either. If it just were the character ROM, this would have to work. I would go for U11, but before doing so, I would go with a multimeter and look for shortings between the various address- and data-lines available at the processor. Spiro. Message was sent through the cbm-hackers mailing list <FONT SIZE=1 FACE="Arial">_______________ Please note that this message may contain confidential information. If you have received this message by mistake, please inform the sender of the mistake by sending a reply, then delete the message from your system without making, distributing or retaining any copies of it. Although we believe that the message and any attachments are free from viruses and other errors that might affect the computer or IT system where it is received and read, the recipient opens the message at his or her own risk. We assume no responsibility for any loss or damage arising from the receipt or use of this message. </FONT> Message was sent through the cbm-hackers mailing list
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