This is not so easy to answer - it depends a lot on the "stiffness" of your power supply under load. Power supplies are typically reted at a voltage that can be maintained under a typical load - Note, what you would measure on an unknown PSU is the open circuit voltage which is typically ...

---Repair progress update--- The MC1377P RGB to PAL/NTSC (highlighted in yellow) has been swapped/tested with another QL (iss.6). It seems to work normally. The working MC1377P from the functional QL does not affect the behaviour of the faulty QL. Even if the MC1377P still gets warmer in the faulty ...

Derek, for someone there might be confusion in understanding the difference between format and file system . Let me try to clarify. The QL tipically uses the very same format as MS-DOS (720K, or 1.44 MB for Goldcard). But the floppy disk drive, managed by the QL disk controller, writes the necessary...

Ciao Leo,
and welcome aboard! A long long time ago, I had the opportunity to try my brother's ZX81. Then arrived his Spectrum 48K (with its games!), upgraded to Spectrum+. Finally, I got the wonderful QL!

I'm not a Gotek owner, but if I understood correctly you must prepare the Usb drive connecting it to PC and using the provided Gotek software. Unless you use a Goldcard, probably you'll have to set as 720K disk. Then the pendrive can be recognised as floppy disc(s). You also must set the Gotek as dr...

Here is a PDF containing detailed info about different Spectrum RGB pinouts:

https://mts.speccy.cz/doc/128_rgb.pdf

No! The pinout is different

The drive needed an external power supply, as we thought the QL PSU was not powerful to power the 3.5" floppy drive. The end result worked well, but only a single drive, no real expansion for multiple floppy drives. I think it would be more feasible to install a floppy drive emulator. Somethin...

Cristian wrote:Check ebay: there are several serial mice, both old and new

But be careful: not all the serial mice are compatible with a bbQL. I tried some before find the right one.