SINCLAIR RESEARCH has changed the Uncommitted Logic Array on the Spectrum to avoid tuning problems which had dogged some owners who were trying to use some Japanese television sets with their computers.

The problems included a flipping picture, no colour, and no picture. Japanese sets from Hitachi and Toshiba caused difficulties as some have not abided by standards set out by the rest of the industry.

It has been stressed that the changes in the ULA should cause no problems if old software is run on the new machines. It will mean that purchasers of Spectrums will have a wider range of television sets which will be compatible.