Had some time today to continue my repair:
As I wrote before, the PCB was really butchered by the previous owner (please guys, if you do not know what you are doing, just stop)...
I cannot go further today as I have no more rivets. I have ordered some from the Netherlands and they should arrive soon.
I just hope to finish this tedious job ASAP.
STE 32MHz PLUG IN BOOSTER (again) 2021 variation
- HigashiJun
- Posts: 1195
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
- HigashiJun
- Posts: 1195
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
And here is the other side of the motherboard:
Cheers.
Cheers.
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
It looks nice, but I'm afraid, these areas may cause problems:
- HigashiJun
- Posts: 1195
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
I think I agree with @tzok on this .. Overlapping copper on tracks like that isn't a good idea. It will likely come back to haunt you.
It may just be easier to find another STE. Or the way to repair such things , would really be to use thin wire and solder to the tracks and run the wires though the holes so you can solder them.. but such extensive repairs I don't think is a good idea anyway... But also note one side of the connector is all GND's, so you don't really need to do every single one.
It may just be easier to find another STE. Or the way to repair such things , would really be to use thin wire and solder to the tracks and run the wires though the holes so you can solder them.. but such extensive repairs I don't think is a good idea anyway... But also note one side of the connector is all GND's, so you don't really need to do every single one.
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.
- HigashiJun
- Posts: 1195
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
I would probably have serious doubts and agree with both of you if such a repair was my first time.
Even if the rivet is overlapping the track, it does not go under the PCB coating - but is just laying on it - and is then perfectly insulated from the copper layer.
And of course, to prevent shorts on the most butchered spots, I use my digital microscope to check if the coating is not damaged. If it is, I then cover the damaged area with epoxy before setting the rivet in place.
I could also use thin wire to have the job done and just do one ground instead of all, but as I like neat repairs, I cannot help myself to fine tune my work...
Even if the rivet is overlapping the track, it does not go under the PCB coating - but is just laying on it - and is then perfectly insulated from the copper layer.
And of course, to prevent shorts on the most butchered spots, I use my digital microscope to check if the coating is not damaged. If it is, I then cover the damaged area with epoxy before setting the rivet in place.
I could also use thin wire to have the job done and just do one ground instead of all, but as I like neat repairs, I cannot help myself to fine tune my work...
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
In theory yes.. and maybe even for a short time.. but I have done this type of "trick" many times in the past, and even on brand new PCB's, solder over the mask seems to always manage to short out eventually. So you should never assume the insulation will "protect" you from shorts.. its not reliable..HigashiJun wrote: ↑Mon Mar 01, 2021 1:34 pm Even if the rivet is overlapping the track, it does not go under the PCB coating - but is just laying on it - and is then perfectly insulated from the copper layer.
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.
- HigashiJun
- Posts: 1195
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
I never assume prior to trying.
I have more than 3 retro computers repaired that way and they are still working good for more than 8 years.
I have more than 3 retro computers repaired that way and they are still working good for more than 8 years.
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
I'm not suggesting shorts, but measure the capacitance. You're basically adding a few dozen pF between GND and each line.HigashiJun wrote: ↑Mon Mar 01, 2021 1:34 pm Even if the rivet is overlapping the track, it does not go under the PCB coating - but is just laying on it - and is then perfectly insulated from the copper layer.
- HigashiJun
- Posts: 1195
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation
I partially agree on that point.
It might be an issue as well it might not...
Capacitance could wreak havoc on digital and analog signals under certain circumstances, where parallel length of traces, distance between these traces, trace thickness and so on are involved.
And I am not pretty sure the FDC meets the above mentioned circumstances.
It might be an issue as well it might not...
Capacitance could wreak havoc on digital and analog signals under certain circumstances, where parallel length of traces, distance between these traces, trace thickness and so on are involved.
And I am not pretty sure the FDC meets the above mentioned circumstances.