1040 STF...Unlucky :)
Re: 1040 STF...Unlucky :)
Your next step choices are to remove the old RAM, and/or change the bus resistors to 2.2K and see if that fixes the problem.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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Re: 1040 STF...Unlucky :)
Ok thanks hum...Where are the bus resistors ?
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Re: 1040 STF...Unlucky :)
see bottom of this page.. Though I missed one pack and its near the MFP. I've not had chance to do a guide to this yet unfortunately.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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Re: 1040 STF...Unlucky :)
OK, just to be sure, do i have the change the 8 resistors ?
(sorry, for the external picture, i can't add any file with the "Attachment tab" )
(sorry, for the external picture, i can't add any file with the "Attachment tab" )
https://www.atarinside.com : Atari 800XL in Europe France/Italy/Benelux/Deutschland/UK White&Silver plastic boxes : Dumps, Videos, Books, reference list / + / as usual high resolution pictures of the Atari 800 XL motherboards.
Re: 1040 STF...Unlucky :)
If I can remember correctly it's only 5 of them. On the C070787, RP2 and RP3 are the data bus and RP4, RP6 and RP8 are the data bus.
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Re: 1040 STF...Unlucky :)
A few hours later...
I removed all the old RAM : It's alive !
I still have not changed the SIL 10k resistors: Should I ?
What do I do with R59,R60,R61, R71,R72,R73 resistors, do I leave it like this or should i remove them ?
I also figured out that C49, the big blue capacitor 16v 1000uf (near U25 - U30) is a bit damaged, i will change it : I don't know if size matters but Conrad has only one Axial wich look tiny :https://www.conrad.com/search?search=16 ... pe=regular Do you have a good source or advice for a replacement ?
I removed all the old RAM : It's alive !
I still have not changed the SIL 10k resistors: Should I ?
What do I do with R59,R60,R61, R71,R72,R73 resistors, do I leave it like this or should i remove them ?
I also figured out that C49, the big blue capacitor 16v 1000uf (near U25 - U30) is a bit damaged, i will change it : I don't know if size matters but Conrad has only one Axial wich look tiny :https://www.conrad.com/search?search=16 ... pe=regular Do you have a good source or advice for a replacement ?
https://www.atarinside.com : Atari 800XL in Europe France/Italy/Benelux/Deutschland/UK White&Silver plastic boxes : Dumps, Videos, Books, reference list / + / as usual high resolution pictures of the Atari 800 XL motherboards.
Re: 1040 STF...Unlucky :)
If your not having issues then maybe not, but I would suggest you change them at some point anyway.Marsupilami wrote: ↑Sat Oct 26, 2019 10:08 am I still have not changed the SIL 10k resistors: Should I ?
Pull um out, they not used anymore.Marsupilami wrote: ↑Sat Oct 26, 2019 10:08 am What do I do with R59,R60,R61, R71,R72,R73 resistors, do I leave it like this or should i remove them ?
Stick in a panasonic FR 4700uf 16V.. Its radial, but you got room to bodge it in.Marsupilami wrote: ↑Sat Oct 26, 2019 10:08 am I also figured out that C49, the big blue capacitor 16v 1000uf (near U25 - U30) is a bit damaged, i will change it : I don't know if size matters but Conrad has only one Axial wich look tiny :https://www.conrad.com/search?search=16 ... pe=regular Do you have a good source or advice for a replacement ?
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
- Marsupilami
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Re: 1040 STF...Unlucky :)
Ok, thanks a lot Exxos for your help
Next step will be to add a touch key self-locking switch under the keyboard like this to select between 1M or 4M.
Next step will be to add a touch key self-locking switch under the keyboard like this to select between 1M or 4M.
https://www.atarinside.com : Atari 800XL in Europe France/Italy/Benelux/Deutschland/UK White&Silver plastic boxes : Dumps, Videos, Books, reference list / + / as usual high resolution pictures of the Atari 800 XL motherboards.
Re: 1040 STF...Unlucky :)
Seems that the switch needs power to work? 1Mb/4Mb switching should be done before you turn the computer on.
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Re: 1040 STF...Unlucky :)
Marsupilami wrote: ↑Sat Oct 26, 2019 10:08 am A few hours later...
I removed all the old RAM : It's alive !
I still have not changed the SIL 10k resistors: Should I ?
What do I do with R59,R60,R61, R71,R72,R73 resistors, do I leave it like this or should i remove them ?
I also figured out that C49, the big blue capacitor 16v 1000uf (near U25 - U30) is a bit damaged, i will change it : I don't know if size matters but Conrad has only one Axial wich look tiny :https://www.conrad.com/search?search=16 ... pe=regular Do you have a good source or advice for a replacement ?
20191025_190737.jpg
20191025_190618.jpg
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