+- Discussion Forum for all things Microbee (https://microbeetechnology.com.au/forum)
+-- Forum: Microbee Forum (https://microbeetechnology.com.au/forum/forum-1.html)
+--- Forum: Non-Microbee Vintage discussion (https://microbeetechnology.com.au/forum/forum-8.html)
+--- Thread: Dick Smith System 80 - What do I do next with it? (/thread-583.html)
RE: Dick Smith System 80 - What do I do next with it? - CheshireNoir - 28-10-2022
So I tried a different tack, and recorded the WAV file to a cassette and tried playing back that, but no dice. I still didn't get any signal above 1 and a bit, even after re-recording it at much higher volumes.
At this point I think there must be something wrong in the amplifier circuit associated with the cassette. Looking at page 39 of the schematics, if I replaced R5 (3.9k resistor) with, say, a 2k resistor, would that work in boosting my output, or am I misunderstanding the circuit?
EDIT: Alternatively, should I look at using a different cassette deck with the external tape port? I'll need to buy a 2.5mm jack for the motor control, but it should be doable?
John
RE: Dick Smith System 80 - What do I do next with it? - ChickenMan - 28-10-2022
Are you trying to load via the external Cassette port ? if so, you must load Binary files ONLY via the built in player. I normally have the F1 button down also.
RE: Dick Smith System 80 - What do I do next with it? - CheshireNoir - 29-10-2022
Not yet trying to load from the external cassette port. Merely wondering if it would have been an easier path than fixing the internal cassette drive.
RE: Dick Smith System 80 - What do I do next with it? - RedskullDC - 29-10-2022
(29-10-2022, 01:14 AM)CheshireNoir Wrote: Not yet trying to load from the external cassette port. Merely wondering if it would have been an easier path than fixing the internal cassette drive.
Hi John,
Have a look in the Blue edition of the System-80 tech manual.
There is a simple mod shown on PG26 to be able to switch between internal/external cassette decks.
Cheers,
Leslie