UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Non-working Commodore PET 3016

ortek_service · 8th Apr 2021, 7:37 pm

It does look like UE9 is currently working OK

So I'd just change UE10 for now and re-test, to not have too many variables and save your 74LS244's / DIL20 sockets for now
- In case they're needed elsewhere (which may not be that long away, giving how vulnerable these 74LS244's seem to be!)
(It is possible to make your own DIL20 etc. sockets, by cutting down others / using two SIL strips, especially when not wanting to wait, but it's probably better to just do it properly first time and not have to potentially change again.)

I'll have to check your list to see how many others of these are left that haven't been changed already!
- Could be unlucky to have dodgy ones on Video-SRAM or Main-DRAM, but I believe some of these have already been changed.
But might be lucky and actually get a significant change in it functioning, once UE10 has been changed.

8th Apr 2021, 7:37 pm	#1445
ortek_service Octode Join Date: May 2018 Location: Northampton, Northamptonshire, UK. Posts: 1,440	Re: Non-working Commodore PET 3016 It does look like UE9 is currently working OK So I'd just change UE10 for now and re-test, to not have too many variables and save your 74LS244's / DIL20 sockets for now - In case they're needed elsewhere (which may not be that long away, giving how vulnerable these 74LS244's seem to be!) (It is possible to make your own DIL20 etc. sockets, by cutting down others / using two SIL strips, especially when not wanting to wait, but it's probably better to just do it properly first time and not have to potentially change again.) I'll have to check your list to see how many others of these are left that haven't been changed already! - Could be unlucky to have dodgy ones on Video-SRAM or Main-DRAM, but I believe some of these have already been changed. But might be lucky and actually get a significant change in it functioning, once UE10 has been changed. Last edited by ortek_service; 8th Apr 2021 at 7:43 pm.