On Wed, 10 Jul 2002 at 11:01:02, Alan Tyson wrote: (ref: <001101c227f9$107a84c0$fb30883e@alantyso>)
> >> This can be dangerous, not only to him, but to the monitor >& QL - he could >> end up frying either or both of them. >> >Thanks for the warning. He's pretty clued up as an Elec.Eng. >lecturer by trade, and his house has had live TV & radio >chassis lying around more time than not over the years. > >[One of my earliest memories is watching the coronation in >1953 on a 6" green screen, which he'd built from an ex-WD >radar set using circuit diagrams from 'Practical Wireless'. >I got into trouble (not hospital, remarkably) for poking >something through one of the holes in the front of the case >and losing it.] > >> However, there appears to [possibly] be a mistake in the >manual, as the pin >> functions were given in 'QL world' (May 1987) differently: > >Is it possible the QL World version came from "p31 of the >Concepts section of the QL User guide"? The 15MB QL Service >Manual says in para 1.1 of page A1 under "monitor >connections" that its version replaces those in the User >Guide. > >Anyone care to hazard a guess as to which is right? Anyway, >pin 5 won't have a signal if QL World is right. QL Manual 12/84 concepts is the right one - which I assume was the one quoted from QLW (snipped). The circuit diagram (in the downloaded service manual) got it worng (but is also not very legible)! I have corrected circuit diagrams (correcting a few other errors too) if needed. -- QBBS (QL fido BBS 2:252/67) +44(0)1442-828255 tony@<surname>.demon.co.uk http://www.firshman.demon.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG