ฝัง
- เผยแพร่เมื่อ 14 มิ.ย. 2024
- The Apple II Euro+ is broken again! Let's fix it and mod it!
Thanks PCBWay for sponsoring this video: pcbway.com/g/M525r4
Previous repair video: • This Apple II Europlus...
The ROM-X project: theromexchange.com/
Applefritter forum: www.applefritter.com/forum/84
Disk ][ drive alignment: www.apple2faq.com/apple2faq/r...
00:00 Intro
01:43 The new fault
03:44 Troubleshooting
10:05 The faulty component!
13:02 ROM modification
16:54 Floppy alignment
22:04 Demo
22:46 Outro - วิทยาศาสตร์และเทคโนโลยี
![บุกร้านไอศกรีม VJ วุ้นเส้น !!!! [ดูคลิปเต็มหน้าช่อง] #Short | PANG ORNHIRA](http://i.ytimg.com/vi/g549nEhKZdc/mqdefault.jpg)
![[LIVE] : ONE ลุมพินี 67 วันนี้!! คู่เอก "นักรบ vs ทาเกียร์"](http://i.ytimg.com/vi/eahGc1XmrEU/mqdefault.jpg)
It is an excellent explanation of how a bus multiplexor works. Nothing like seeing a specialist making complex things easy to understand !!!
Hey thank you! Sometimes I can make things easy too! :) Thanks for watching!
You show a very good understanding of how the Apple }{ works. Very nice diagnosis. The best part for me was discovering that the TL866 programmer was capable of testing TTL and CMOS logic ICs. Thank you for showing that.
It's a very capable programmer, I discovered that a long time after I bought it! You're welcome and thanks!
Very nice repair! The floppy drive adjustment looked like a fluke :) But great that it worked!
Thank you!
Great job Tony! Very entertaining. Glad to see the capture device working better.
Thanks! It's a new one which seems to like(ish!) those odd video signals! A video about it is coming at some point! Thanks for watching!
Good to see somebody on youtube actually use an oscilloscope to find faults. 👍👍👍👍
otherwise where's the fun :) Thanks for watching!
I didn’t expect to see a spray bottle of “No More Spiders” on someone’s work bench LOL
Assuming that spiders qualify as "bugs", that's perfect to get rid of hardware bugs :)
(mine's a terrible joke!)
Great fix. Interesting how clocking the floppy motor fixed the drive.
Indeed! And so cool that it can be done without special tools! Thanks for watching!
A very entertaining video. Thank you! ❤
Thank you for watching!
Never be an Apple fan but i like when you repair those old computers. Still hope you get your hands on a Commodore ViC 20 for a repair. Great video my friend. Keep up the good work.
That would be awsome! I'm sure I'll soon have another Commodore!
Great video!
Thank you for watching!
Thanks Tony
Thank you for watching!
Awesome! I honestly didn't know about the disk drive testing and alignment procedures. Might be worth a thought to do a video dedicated to just that alone, since I am not sure what software or disks id need to do something like that for the AII.
Thank you! I wanted to and then always managed to piggyback the section to an existing video. I’ll think about it!
Hi Tony. Nice job 👍
I once heard a man say, "In the world there only 10 types of people. Those who understand Binary, and those that don't". 😉
very nerdy joke suitable for this channel indeed! :D
Always fascinating ;-)
Thank you!
i am very interested in the rom replacement....i have an Apple II+...it has smoked one of the roms...inhave another set of roms that imwould prefer not to place at risk.....so upgrading to less propreitary hardware sounds like a very good idea to me.
"smoked" as in it got physically burnt?
Hi Tony. Do You plan videos about repairing other types of computers? Maybe Atari?
Of course, anything that lands on my workbench! :)
Makes me wonder whether there are any more borderline faulty logic ICs from the same batch on there. Probably not?
Very possible. Though the Apple II has been working fine for a few weeks now.
13:10 Great indie rock band name.
I've listened a few times but I'm not sure I understand! :D
I would leave the controller in the slot 7. Just in case 😂
ahahahah - I'd do that but some SW just doesn't work there! Weird thing that some (most) of it searches for the floppy in slot 6 in the code!
@@tony359 Really? Apples never were my thing.
interested to know why you havent decided to go down the patreon or join route? sorry if its a personal question.
Thanks for asking. I just feel it’s a bit too early. At some point… 🙂
@@tony359 let me know when you do. :)
Given that the green lacquer on the screws seems to have been undisturbed, perhaps that drive was never perfectly aligned straight from the factory. 🙃
interesting! Who knows, that Apple was from a pile of Apples :)
Yes, I could have used another floppy but... :D
You saved it from becoming EuroTrash.😂
No computers go to landfill on this channel! :)
Won't this hot swap of ROMS screw up the whole system?
it's a good question, I didn't investigate too much. However, there is ONE bit (maybe byte) difference between the two ROMs and it's the RESET routine. Now, it might be that if I swap the ROM while the system is doing some intense work, it might not like it. I do not know to be fair.
"swapping" roms is done only by setting one input to LOW or HIGH. Data-lines are always connected to the BUS so I don't see what can go wrong except maybe occasionally system freeze / halt. This is not like unplugging and plugging back USB drive.
@@tiemanowo What can happen if the ROM is swapped while reading?
@@watchmakerful Maybe system crash and nothing more.
Oh yes thanks for clarifying. This is nothing to do with physically unplug the ROMs, it's just one address line going low/high so when the system asks for a location, a different one actually responds. So worst that can happen is a crash :)
Cursed Apple! Nice to see it running again. ...for a few days? lol
So far so good! :) 🤞
@@tony359 If it brakes again, we'll get another entertaining video :)
As we have told you many times, in devices this old you have to change all the electrolytic capacitors before you even start testing. It's not even worth testing them. Those who did not fail will fail in the short term.
But in this case it didn't fail because of the capacitors! And there are so few caps in an Apple II anyways.
Anyways, I know it's a good idea, I just don't have the time and resources to do that every single time!
@cosmefulanito5933
Why, what happens to the capacitors ?
I don't recommend replacing all capacitors less they are failing. This technique isn't best practice. After repairing literally 100s of Apple II, IIe, and IIc, I have never found a computer that needs all capacitors replaced.
it's indeed a debated subject. My view is: new ones won't hurt but they're not strictly necessary and won't necessarily fail very soon. Definitely I don't like swapping caps for the sake of doing it.
@@tony359 Actually yes. They are strictly necessary because as I explained before, those who did not fail will fail in the short term. Capacitors have a lifespan. And all those capacitors already exceeded it.
A good technician always repairs the problem and prevents future problems. Otherwise you will always be repairing the same things over and over again.
First!