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  1. sbreit

    getting rid of the jailbar pattern

    Said friend of mine fortunately has both an oscilloscope and a logic analyzer. For now, I fear that the worst part will be acquiring the spare parts :(
  2. sbreit

    getting rid of the jailbar pattern

    Well, I checked virtually any line involved in video output and couldn't find any continuity problems or shorts. However, I checked the exact pattern on the screen and found out that there are 6 pixels working, 2 pixels dead. I reckon that the first column on the screen also is the first bit in...
  3. sbreit

    getting rid of the jailbar pattern

    Hi zuiko21 and thanks for your reply! That's interesting... thanks for the info! You're absolutely right, thanks for the clarification. I've put it very simple, that's why I said "oversimplified" ;) Okay, now I consider the mystery of the 2 VRAM chips solved ;) I've puzzled over this with a...
  4. sbreit

    getting rid of the jailbar pattern

    Hi together! I just recently bought a SE/30 that suffered from the occasional checkered flag at startup, no bong and a jailbar pattern (and a few other flaws that ain't topic here for now). Recapping helped with the bong and checkered flag, but it still has the jailbar pattern. In order to...
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