Bob Spelten wrote, on 9/Oct/10 10:28 | Oct9:
Op Thu, 07 Oct 2010 19:12:21 +0300 schreef Ralf Reköndt <ralf.rekoe...@t-online.de>:

Rich Mellor wrote:

 Has anyone ever come across a blurry picture from the QL on a
Microvetic Cub monitor?

I know it is not the QL at fault as I have tried it with another monitor
- does anyone else have any suggestions?
There do not appear to be any controls on the monitor other than
brightness

Seems to be a faulty PTC.

I also have an old blurry Microvitec and have made some improvement by adjusting the focus control.
Careful, it's near the power/high voltage block.
But what is a PTC?

Possibly:

http://en.wikipedia.org/wiki/Resettable_fuse

Tony

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