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Dilwyn Jones wrote:
>> My machine has been doing the high flashing rate occasionly for some
>> time now, but when start to flash quickly I tap the board lightly,
>> and it goes back to normal.
>>
>> I just put it down to a faulty connection somewhere.
>>
>> The snag is I have to leave the cover off.
>>
>> Arnold
> I got a very helpful reply from Nasta on this subject and although
> it's still not sorted, it does tend to point to a connection fault or
> short circuit somewhere, which backs up Marcel's suggestion.
>
> I plugged the Qubide into the spare slot on the MPlane (I hadn't
> realised it's upside down compared to the other slot!)
and the problem
> remained. So that seems to have eliminated an Mplane slot fault as the
> source of the problem.
I guess the fact that all is OK if you *remove* qubide eliminates Mplane
as a source of the problem. All the pins on the Mplane expansion port
are connected together, so moving qubide about makes no odds.
>
> For now, I've given up. What I've done is to plug my romDisq into the
> EPROM slot in the minisql, wire up the hard disk LED to the pair of
> pins furthest from the gold connector on romDisq and copied the
> SuperHermes Lite keyboard extensions into it.
Make the extension file 'romn' - n = 1 to 8 (you probably did that!).
This way, I can get most
> of my programs and extensions into RomDisq and do routine work from
> floppy disk.
>
> Not the most satisfactory solution (I'd rather have the Qubide and
> hard disk working!) but it'll do in the short term.
>
> Thanks to everyone who tried to help.
>
Glad Mplane is not the problem and that RomDisq has rescued you.
That external LED simply mimics the on board LED of course. I guess you
cannot see the on-board one.
It is probably worth cleaning (I use hard rubber but fibreglass pen is
best) and re-seating all Qubide chips. Use isopropyl alcohol (tape head
cleaner) and toothbrush to clean *everything* especially pcb..
I doubt if this will cure, but worth a try.
Anyone got a qubide they can lend Dilwyn? You can then investigate and
eliminate plugged in chips.
How many screenfuls was Nasta's reply (8-)#
Tony
- --
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