leejsmith Posted August 19, 2021 Share Posted August 19, 2021 (edited) I have repaired a few retro systems bought untested from ebay, but this one was just stupid. Part one of the video is opening the box and doing some initial cleaning. Video part 1. I am the idiot that bought this battery acid damaged atari 800xl It's been about 3 weeks and I made lots of progress on the case and keyboard, but the mobo needs a lot of work to clean and remove the corroded components. Edited August 19, 2021 by leejsmith 6 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted August 19, 2021 Share Posted August 19, 2021 oh my! Just opening the box would be a 'what did I do' moment! Quote Link to comment Share on other sites More sharing options...
TGB1718 Posted August 19, 2021 Share Posted August 19, 2021 That movie should be 18+ rated, this thing is a house of horrors ☠️. Good luck with the restoration, looking forward to part 2. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted August 19, 2021 Share Posted August 19, 2021 Ah! He does ask himself 'what did I do'!? I think he needs a full size ultrasonic cleaner ! Put each piece in and run in multiple orientations, so much crap can be stuck and hiding in that mess. Quote Link to comment Share on other sites More sharing options...
ivop Posted August 19, 2021 Share Posted August 19, 2021 I was amazed there are still traces on the PCB. When I saw what the acid had done to the shielding, I didn't have much hope. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted August 19, 2021 Share Posted August 19, 2021 good solder mask and oxidation layer protected it maybe 1 Quote Link to comment Share on other sites More sharing options...
Preppie Posted August 19, 2021 Share Posted August 19, 2021 It's amazing what a bit of vinigar does, but I think that thing would dry up the whole UK supply. Quote Link to comment Share on other sites More sharing options...
ivop Posted August 19, 2021 Share Posted August 19, 2021 Well, it's not your usual vinegar for salads. It's white vinegar (the Dutch call it "cleaning vinegar") which is way more concentrated and not for human consumption Quote Link to comment Share on other sites More sharing options...
gilsaluki Posted August 19, 2021 Share Posted August 19, 2021 5 minutes ago, ivop said: Well, it's not your usual vinegar for salads. It's white vinegar (the Dutch call it "cleaning vinegar") which is way more concentrated and not for human consumption Yes, white vinegar is great at cleaning. I use it to flush my tankless water heater twice a year. Cleans and clears the mineral deposits. Quote Link to comment Share on other sites More sharing options...
xrbrevin Posted August 19, 2021 Share Posted August 19, 2021 7 hours ago, leejsmith said: untested from ebay i hope you got it cheap! Quote Link to comment Share on other sites More sharing options...
Preppie Posted August 19, 2021 Share Posted August 19, 2021 1 minute ago, xrbrevin said: i hope you got it cheap! That's the crazy thing, people like projects so I think it sold for about the same price as a working model. 1 Quote Link to comment Share on other sites More sharing options...
ivop Posted August 19, 2021 Share Posted August 19, 2021 Just now, xrbrevin said: i hope you got it cheap! Nope, 70 sterling IIRC. But hey, that's including what looks like an ingot, a tapedrive and several tapes. What's to complain? Quote Link to comment Share on other sites More sharing options...
xrbrevin Posted August 19, 2021 Share Posted August 19, 2021 ah, the vid explains it all.. and yes, great heroes need a challenging quest from time to time ? 1 Quote Link to comment Share on other sites More sharing options...
leejsmith Posted August 19, 2021 Author Share Posted August 19, 2021 3 hours ago, _The Doctor__ said: Ah! He does ask himself 'what did I do'!? I think he needs a full size ultrasonic cleaner ! Put each piece in and run in multiple orientations, so much crap can be stuck and hiding in that mess. a full size was out of my budget so I went for one that can do half the board at a time 10L Quote Link to comment Share on other sites More sharing options...
leejsmith Posted August 19, 2021 Author Share Posted August 19, 2021 After the cleaning in this video, I am still amazed it looks ok around the ram. The area around the Pokey and PIA is very rough and I removed all the passives. PXL_20210803_185156543.mp4 3 Quote Link to comment Share on other sites More sharing options...
ivop Posted August 20, 2021 Share Posted August 20, 2021 I suggest you get rid of the RF modulator. You don't need it if you use the monitor output. I'm pretty sure it's b0rked on the inside anyway. You can lift the lid if you want to. Quote Link to comment Share on other sites More sharing options...
xrbrevin Posted August 20, 2021 Share Posted August 20, 2021 as other posters said, white vinegar is great for lifting rust without harming the afflicted parts do you know if it can be used in the ultrasonic bath? i used thinners in mine on a carb and whilst it did a great job, it did dissolve the plastic grille tray - now i need a stainless one... Quote Link to comment Share on other sites More sharing options...
leejsmith Posted August 20, 2021 Author Share Posted August 20, 2021 8 hours ago, ivop said: I suggest you get rid of the RF modulator. You don't need it if you use the monitor output. I'm pretty sure it's b0rked on the inside anyway. You can lift the lid if you want to. it's gone. Quote Link to comment Share on other sites More sharing options...
leejsmith Posted August 20, 2021 Author Share Posted August 20, 2021 21 minutes ago, xrbrevin said: as other posters said, white vinegar is great for lifting rust without harming the afflicted parts do you know if it can be used in the ultrasonic bath? i used thinners in mine on a carb and whilst it did a great job, it did dissolve the plastic grille tray - now i need a stainless one... not sure. Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted August 20, 2021 Share Posted August 20, 2021 Good bleeping god... We all like a challenge, but that's almost a complete rebuild.. I'd be stunned if anything is ok and I hate to think how many traces and vis's are missing / rotted.. I wish you luck and hope you have well lined pockets.. 1 Quote Link to comment Share on other sites More sharing options...
gilsaluki Posted August 20, 2021 Share Posted August 20, 2021 1 hour ago, Mclaneinc said: Good bleeping god... We all like a challenge, but that's almost a complete rebuild.. I'd be stunned if anything is ok and I hate to think how many traces and vis's are missing / rotted.. I wish you luck and hope you have well lined pockets.. I surely enjoyed that video. Like a end-of-season cliffhanger episode of Dallas (Larry Hagman TV show of the 80s), I cannot wait to see what's next. Please post when the next adventure is posted on the TUBE. Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted August 20, 2021 Share Posted August 20, 2021 11 minutes ago, gilsaluki said: I surely enjoyed that video. Like a end-of-season cliffhanger episode of Dallas (Larry Hagman TV show of the 80s), I cannot wait to see what's next. Please post when the next adventure is posted on the TUBE. I'm almost old enough to be the late Larry Hagmans dad I'd rather have been Victoria Principal's boyfriend though Didn't watch the vid (will do)... Can't believe the price it went for... Probably bid on by all the restore guys on YT as fodder for their next fix up.. 1 Quote Link to comment Share on other sites More sharing options...
gilsaluki Posted August 20, 2021 Share Posted August 20, 2021 Agreed. It's a YT fodder piece. But it is a video. These guys must be making some good dough on YT. Zuckerberg. DBM 1 Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted August 20, 2021 Share Posted August 20, 2021 (edited) FJC rakes it in I think I'll just put an 800XL badge on Ebay with the text "Ideal for a repairathon video, bring this XL back to its former glory" ..... Should coin it in Edited August 20, 2021 by Mclaneinc Quote Link to comment Share on other sites More sharing options...
leejsmith Posted August 20, 2021 Author Share Posted August 20, 2021 5 hours ago, gilsaluki said: Agreed. It's a YT fodder piece. But it is a video. These guys must be making some good dough on YT. Zuckerberg. DBM I will see £0 from YT, not sponsored or monetised in any way. 1 Quote Link to comment Share on other sites More sharing options...
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