IBM 5151 (MDA display) - common faults / gotchas?

Jules Richardson jules.richardson99 at
Sun Nov 9 12:47:26 CST 2014

On 11/09/2014 10:43 AM, Chuck Guzis wrote:
> I'll add this to the 5151 issue.   Because the 5151 responds to *every*
> horizontal sync pulse, it's quite possible to toast the flyback transformer
> with the wrong frequency.  I know--I've done it.

I'd remembered something about being able to damage the display and 
mentioned it to book store guy - I didn't realise it was the flyback itself 
that it toasted, though. I'll have to borrow it and see if it works before 
buying, I suppose.



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