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Re: Old TT motherboard restoration

Posted: 29 Jun 2021 16:55
by stephen_usher
It shouldn't crash without termination, merely not see anything. Sounds like your SCSI controller chip is probably fried.

Re: Old TT motherboard restoration

Posted: 29 Jun 2021 17:29
by frank.lukas
Use the NVRam Soft from Uwe Seimet (HDDriver) to set the machine (TT) SCSI ID to 7.

Re: Old TT motherboard restoration

Posted: 29 Jun 2021 18:57
by mgi
Will try and if not I guess new SCSI chip?

Re: Old TT motherboard restoration

Posted: 29 Jun 2021 19:58
by frank.lukas
You need a 6V NVRam Battery for the Mainboard ...

Image

Re: Old TT motherboard restoration

Posted: 29 Jun 2021 19:59
by stephen_usher
4x AAA batteries in a holder works wonderfully (and cheaply).

The TT will run without one, or at least mine did for a while.

Re: Old TT motherboard restoration

Posted: 29 Jun 2021 21:14
by mgi
Well, I plugged again external SCSI HDD and added terminator at its end as I happened to have one and it works. I can run Mint and no surprises as of yet. I plugged the battery but 3.5V - seems to be holding watch and date - should I change it?

Big thanks - process ongoing
Michal