Hi William, Thanks for he reply. For my own education, I was wondering why you feel the the transistors are the issue? I'm also wondering how exactly would you test for a short in a transistor??? Is that something that can be done in circuit with a multimeter? I'll take your advice on dismantling the keyboard and cleaning with alcohol. I'll need to be especially careful as this keyboard is actually a Japanese variant with Japanese characters also printed on the keys. Thanks again Phil On Nov 8, 2009, at 2:10 PM, William Levak wrote: > On Sun, 8 Nov 2009, Philip Lord wrote: > >>>> First thing I noticed was that there were many keys not working or >>>> working sporadically, however I was still able to quickly write a >>>> 'hello world' program to confirm that the basic was function >>>> correctly. All seemed good until I tried to load a tape. After >>>> typing >>>> 'LOAD' and pressing return the computer would freeze. I would not >>>> get >>>> the 'press play now' message, and the tape drive would no longer >>>> function. Turning the machine off and on again brought the machine >>>> back to life, and the tape drive was able to move again through FF, >>>> REW and PLAY buttons. Typing LOAD or SAVE would lock everything up >>>> again. > > Sounds like a short in the cassette moter switching transistors, Q1 > - Q6. > > Problems with the keys is normal for these computers. First thing > to try is to take apart the keyboard and clean the contacts with > alcohol. > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2009-11-08 13:00:04
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