I have the Minerva 1.97 and Toolkit II 2.20 ROM image if you want me to send it.
PM me your email and I can do that...
BP
Search found 95 matches
- Fri Nov 24, 2017 7:15 pm
- Forum: Hardware
- Topic: Minerva Rom burning
- Replies: 10
- Views: 6329
- Wed Nov 08, 2017 11:57 pm
- Forum: Hardware
- Topic: Anyone with a psu for Microperipherals Floppy Interface?
- Replies: 45
- Views: 27917
Re: Anyone with a psu for Microperipherals Floppy Interface?
Tonight I measured the voltages out of the official PSU on the 4 cables that are showing, as on mine the 6 pin DIN plug is missing! I got the following: Red - Green 16.2v AC Blue - White 9.9v AC SO my only assumption is that the label is not telling us the whole truth and the earlier wiring diagram ...
- Thu Nov 02, 2017 11:22 pm
- Forum: Hardware
- Topic: Anyone with a psu for Microperipherals Floppy Interface?
- Replies: 45
- Views: 27917
Re: Anyone with a psu for Microperipherals Floppy Interface?
Did we get anywhere with the pinout for this?
15vac and 9v dc
Thanks
Russ
15vac and 9v dc
Thanks
Russ
- Wed Oct 11, 2017 12:29 am
- Forum: General QL Chat
- Topic: Bad evenings repairs
- Replies: 10
- Views: 7840
Re: Bad evenings repairs
@Derek, You are correct and that is what has happened, 9v on the 5v line. I did not realise CST put the link in. JUst trying to ascertain what is damaged and what is not. So far 4 x DRAM and a 8049 destroyed, not checked the 8302 yet. Once I know they are all working then I will move onto the logic....
- Wed Oct 11, 2017 12:19 am
- Forum: Compatibles Corner
- Topic: CST Thor 1
- Replies: 78
- Views: 64462
Re: CST Thor 1
I am hoping that I may not have to change too much. My worry would be, if the board would be
better scrapped or rebuilt!
better scrapped or rebuilt!
- Sun Oct 08, 2017 9:09 pm
- Forum: Compatibles Corner
- Topic: CST Thor 1
- Replies: 78
- Views: 64462
Re: CST Thor 1
It was a shorting link put in by CST, by the main connector!
So far I have had to replace the 4 x DRAM and the 8049, just the ZX8302 to check and then
maybe some power can be applied.
So far I have had to replace the 4 x DRAM and the 8049, just the ZX8302 to check and then
maybe some power can be applied.
- Sun Oct 08, 2017 9:07 pm
- Forum: Wanted
- Topic: Replacement ROM Image
- Replies: 1
- Views: 2875
Re: Replacement ROM Image
Sorted.
Thank you.
Thank you.
- Sun Oct 08, 2017 9:04 pm
- Forum: General QL Chat
- Topic: Bad evenings repairs
- Replies: 10
- Views: 7840
Re: Bad evenings repairs
OK! Just a cautionary tale. If using a QL motherboard from a Thor or unknown origin, check for this> https://preview.ibb.co/cxFQJw/IMG_2422.jpg ON my Thor board the regulators are removed and this link shorts the 7805 input to output. So if you want to use this board in a QL and then add the regulat...
- Sat Oct 07, 2017 11:21 pm
- Forum: General QL Chat
- Topic: Bad evenings repairs
- Replies: 10
- Views: 7840
Re: Bad evenings repairs
Hi Derek, I have not got to the Thor cards yet. Still trying to get a stable system to test them with. I was trying to use the Minerva to test the QL mainboard removed from the Thor. Looks like the 5v line was up at whatever a normal QL PSU outputs at DC, 9volt plus! Not sure what will cope with tha...
- Sat Oct 07, 2017 6:24 pm
- Forum: General QL Chat
- Topic: Bad evenings repairs
- Replies: 10
- Views: 7840
Re: Bad evenings repairs
Swapped the boards back. Put the regulators back on the board from Rich and cleaned up both boards. Rich's replacement board is now OK and running from the Sinclair PSU. Put the original Thor board back in and I get a black screen. Sooooooo back to diagnosing the issue with the Thor QL mainboard. St...