What an adventure! The "12 volt" damaged SE/30 lives!

[@robjones3818]

It's a shame you said this series didn't do as well as some of your other videos, Adrian. These lengthy sagas of in-depth troubleshooting are some of my favorite content of yours! I'll keep donating if you keep making them, views be damned. 😉

[@jandjrandr]

I have to agree that I seriously love these videos and I also appreciate the amount of work that goes into making them.

[@networkg]

I don't even own an Apple, and I love this series for the evidence based approach to repair.

[@KerrySainsbury]

For me, it felt like a lot of copy/paste from a spreadsheet and reciting of hex numbers. Useful if I wanted a tutorial, but less appealing as entertainment. A difficult line to walk. Can't please all of the people all of the time. Still a happy subscriber!

[@wolvenar]

I also love this style of series! Maybe when the entire series is finished people people will be more lilely to watch since the series can be binge watched?

[@xKynOx]

Not much nostalgia outside of the USA , they could not compete with cheap Euro/Asian PC's, here a apple was for work not play.

[@mariestarlight]

I love the black and white future edits. I just keep thinking in my head of the meme, "It was at this moment that he knew, he f*cked up".

[@adriansdigitalbasement]

Hahahaha yeah!!! 🤣 Exactly!

[@kepamurray1845]

I have next to no interest in apple pc's but enjoy watching the techniques and repair philosophy you follow. Thanks Adrian. You deserve more views.

[@adriansdigitalbasement]

Thanks -- I do try to show that the techniques are the same no matter what the system is. :-)

[@jamesfmilne]

These videos are absolutely fantastic, because I have quite a few SE/30 motherboards that I need to fix and I've got renewed enthusiasm for tackling them again now.

[@adriansdigitalbasement]

That's awesome!! It's exactly why I make the videos, in hope they might be useful to other people.

[@justinkovacik9436]

Adrian this is one of the best series I've seen from you it was so interesting to see how you fixed so many problems and slowly diagnosing everything piece by piece Good job

[@frankowalker4662]

That was a great series. Nice work Adrian.

[@BigDaddy_MRI]

This was a great series!! I hope it does better and your views increase. This was great to watch and since I have been subbed to your channel it’s always been fun to watch your troubleshooting abilities. Cheers!!

[@maxtornogood]

Never let Adrian near Data Line 31 ever again! 🤪 . Seriously though, good troubleshooting series!

[@Astfgl]

Yesss, I love this series! Having refurbished an SE/30 of my own earlier this year, it's super interesting to see all the bullets that I dodged and the problems that I fortunately did not have to deal with. I also really appreciate the scientific approach to diagnosis, it's very educational and definitely will help to give me ideas when doing hardware repairs in the future.

[@dasistdaniel]

I only used computers, never repaired one on this level, i have no solder skills, i never used an oscilloscope. And still here i am watching these videos and been fascinated about them.

[@superslammer]

You don't need solder paste. You can clean the pads, tin them, then add flux and then sit the chip on top and heat it with hot air until it slides into place.

[@AndrewFremantle]

27:33 - I hereby vote for more Gray Adrian! He's hilarious!

[@mogwaay]

Totally agree 😂 very The Wonder Years esque, love it!

[@Spudz76]

Gradrian the Narrator

[@Megatog615]

i LOVE that RAM contraption! you should save it and put it on display or something when you get a true replacement.

[@krnlg]

This has to be in the top tier of retro repairs on the internet (not just KZbin!) I'm so glad you got it working, but really the journey of discovery with this series has just been amazing, thanks for taking us all along for the ride!

[@tommythorn]

SE/30 owner here, VERY much appreciated series. I feel I know a ton more about the SE/30 now.

[@greenmoose_]

I've never owned an apple product, probably never will. I did watch every second of this series though and I've never been so invested in seeing an Apple computer startup as with this "12v" machine of yours! I love the memory chip adaptor you made, if it performs exactly as it should I think you should leave it just for the visual effect on the board itself, its cool!!

[@Jody_VE5SAR]

@11:19 you even mentioned the possibility of a break in the TX side of the serial link, so I knew it was on your mind. 🙂 C'est la vie - still made for a great video!

[@X-OR_]

Great Series.... Thanks for sticking with it to the end......

[@xrror]

Hah love the B & W "Duke of Hazard" style narrator in-cuts of foreshadowing lol

[@granitepenguin]

A new candidate for the "famous last words understatement of the week" award. 🙂

[@Cyro_Ciolfi]

Wow, excellent video series, Tks.

[@notanimposter]

On the 020 and up, you use those special F-line instructions to talk to the FPU/PMMU. If the copro isn’t present, the instruction acts like a trap, allowing the OS to jump into a replacement routine. Seeing as the SE/30 was never meant to operate without an FPU, it makes sense that they didn’t include a routine for that!

[@gertk2303]

Kudos for your tenacity, great deducing.

[@kellyherald1390]

Good work on getting this board fixed. Experience is the harshest of teachers but the best at creating knowledge.

[@TomConder]

I enjoy watching these videos. I love the journey of discovery and good humor when you gain new knowledge that changes your working assumptions. I celebrate with you when "it freakin' works!"

[@networkg]

If the Apple II computer was release today, Apple would try to make it illegal to repair it.

[@SyphistPrime]

I was waiting to see what would come of this board. Glad to see it finally working. It was certainly a journey.

[@danman32]

One thing you might not have discovered by the parts Canon approach was a broken trace for the serial

[@TechTimeTraveller]

Adventures on the 12 Volt Rail - sounds like an 80s movie! This is making me want to dig out my Mac II motherboard. No voltage adventures there. Just let it sit too long and the caps corroded it. Managed to get it to chime but no video. Probably my poor SMD repair skills.

[@adriansdigitalbasement]

Ah well you know you can bust out a serial cable and hopefully try to get some answers from it. It's like R2D2 talking to the Death Star computer :-)

[@TechTimeTraveller]

@adriansdigitalbasement I'm no where near as smart as R2D2. It'd be more like Roomba talking to the Death Star lol. I'm digging through your videos now to find your technique for bodge wiring on these tiny traces. I've done it but I have a hard time avoiding other traces.

[@adriansdigitalbasement]

@@TechTimeTraveller I predict a pretty funny sketch!!!! R2D2 can come by and knock the Roomba out of the way and get real work done 😂

[@perhansson6718]

Thank you Adrian for this series, it has been very nice to follow along on your journey! Just one tidbit I have not heard you mention: there is another reason that ceramic capacitors are not a good idea to use and that is their capacitance is voltage dependent, I can't provide direct links due to KZbin censorship but if you Google for this you will get some good articles: capacitance voltage dependency ceramic capacitors

[@adriansdigitalbasement]

I've talked about it before and it is something to consider. I've done a bunch of testing and this is mainly an issue with circuits using the caps for timing (RC, etc) as the values being off cause issues. But for bulk capacitance like what's happening here or AC filtering like on the audio circuit, it doesn't matter at all. As long as you check the datasheet to make sure you aren't getting 4uf when it should be 50uf.

[@Jerrec]

I hope you move back to the plexus! :-)

[@seancurtin6103]

Hats of to that dead 2cx for being an organ donor for pretty much everything! Might as well go back and pull the CPU to replace the one you used from your stash.

[@GarthBeagle]

What a journey! Another one saved!

[@retropuffer2986]

"It's alive", very apt Halloween theme (Frankenstein). 🧟

[@Eyetrauma]

1:12:09 Adrian: “Well, the board is fixed.” The humble VRAM chip: “Omnissiah, grant me strength.”

[@Audix-19]

The part where you had a theory about the RAM and then tested it with a specific amount and it worked... blew my mind.

[@thedford]

heck yeah! crystal quest! for the past few months you're videos have been inspiring me to fix my color classic and se's. i think it will happen soon.

[@wolvenar]

I love seeing resolution of tough problems.

[@FranksRetroLab]

Did you give us a teaser about another channel? “Adrian’s Digital Garage”. A search for abandoned logic boards. 😂

[@memadmax69]

Oh, I was hoping this old boy would be saved to play another day and you did it bro.

[@Turbo187KillerB]

You could say I'm into it...I literally cheered when you got the video going last episode!

[@adriansdigitalbasement]

That's awesome. 🎉 It's so rewarding to get these old things working again.

[@awilliams1701]

I was litterally thinking, "but you're going to check the receive line anyway right?" then you did your post commentary. lol

[@adrian_sp6def]

if the IC seems to not self align, You can try to push it very gently to see if they back to right position. Using lot of flux helps with self alignment and solder bridges

[@Mr76Pontiac]

"Oh how wrong I am" - I HAD to laugh out loud at that!

[@diegoknyte]

What an adventure. Man. Love that spider VRAM you have there. I'd clear epoxy that sucker for stability and use it if the board still fits in the case. Luckily this wasn't a customers' board.

[@scottishcontentcreators]

I don't have a freakin clue about computers, my last one was a Vic20 lol, but I love these videos, especially the black and white Adrian, like he's doing diagnostics on his diagnostic video!

[@twocvbloke]

Well, if anything, it is a good lesson in remembering to triple-check your work before applying any power, just to be sure there's no shorts or unwanted crossed wires blowing out a load of parts in the process... :)

[@jackrubin]

Really one of the best repair videos!

[@rchltmedia]

man, from non-working doorstop to actually runs some program makes me mindblown.

[@AmadonFaul]

Instead of using paste and heating the chip down with it loose, I'd solder two opposite legs by hand, then apply paste on the rest around the outside, and use hot air to heat. That way you can get the chip lined up perfectly in advance, then melt the paste and not have as much chance for the chip to move, even if the hand soldered legs re melt. OR, hand solder all of them, then add flux paste, and while pressing down, use hot air to re melt them all to wick the hand applied solder in well. Flux will make hand soldered pins flow and be shiny and really nice. Of course you can't clean the flux under the IC without bathing the board in alcohol or using ultrasonic cleaner bath.

[@MonochromeWench]

That ram chip seems like the perfect candidate for a custom PCB adapter. Would still end up cheaper than buying an untested used chip from unreputable sources. The donor card has a few more of the chips so a PCB would be useful if you needed to use some in some other system.

[@jandjrandr]

It would be fun to design a custom PCB adapter from ZIP to DIP which would look very clean as a replacement, especially if you could successfully lay the ZIP chip flat.

[@chinsta00]

Adrian even mentions @6:30 that the dual port video RAM chip was weird and has only encountered it on this system. So I agree, taking advantage of salvaged ZIP packages and making a small PCB adapter for future SE/30 machines makes perfect sense.

[@adriansdigitalbasement]

Indeed everyone. Yeah these ZIP chips might be easier to find in the future than the old DIP package, so the adapter PSB would be super helpful. For now the wire mess will work for me :-)

[@heikovanderlaar3780]

Great series! I think you should send 12V to data lines more often.

[@andyhu9542]

The F-line instructions on the 68000 is reserved for Floating-point (see what Motorola did there? F for Floating point). So removal of the FPU would cause those instructions to malfunction. This makes total sense.

[@beaseac]

I enjoy the amount of effort you put into repairing these items. Most world just trash and move on.

[@Renville80]

When it comes to laying down the solder paste, one continuous stripe across the pads (at least the same diameter of the dispensing needle) is generally enough. J-lead packages are slightly more forgiving (IME) than the QFPs when it comes to excess solder.

[@TheBitPunch]

I always love these videos, Adrian! Really appreciate all the videos. Commenting for the algorithm. 😃

[@joseluisarenasperez3855]

A big hello from Spain Adrian, Great series Video on this repair 👏👏👏 you do really great 🎉🎉🎉

[@lerkzor]

According to Louis Rossmann, Apple is STILL running high voltage lines literally right next to data lines, even on their newest devices. And yes, it still causes problems.

[@BlackGymkhana]

Adrian i suggesto to use flux while cleaning pads and to avoid bridges, then use less solder paste for those type of soldering.

[@Circuits_]

yes, the chip needs to be basically floating atop the puddle of flux in order for it to be drawn to self-align to the solder pads

[@tmcmurra63]

I thought it was an excellent series. A puzzler for a good while.

[@lindoran]

I am a big fan of rhe deep dive repair videos 😁

Nice repair !! awsome work! one thing you maybe can make a pcb adapter for the video memory :P

[@richardwernst]

I thought there was an issue if only 256M simms were installed since it thought there was 4M total and putting 4M in bypassed that error. Did I miss how/where/when that was fixed?

[@warrenmchenry5022]

Is there a math coprocessor "present" pin on the CPU (like on a 286/386) that you could manipulate? I wonder if you'd still get weird crashes if the OS can be made aware the math coproc is actually not connected... Or if the coproc is always supposed to be there and there's no error handling/mode for it anywhere in the released, non-development versions?

[@preferredimage]

How come you never get the descending sad tones? I get the 1234 tones but then followed by 2321....

[@TheRealRR4711]

If you have enough space on the PCB you may try actually soldering an SMD-PLCC socket in place, those you can solder from the "inside". AFAIR they have the same pad layout as the chip itself

[@adriansdigitalbasement]

Yeah that would have been ideal. I have some PLCC SMD sockets but I looked at soldering those and it seems impossible without melting the socket. Luckily I don't really work on SMD systems much and I don't intend to, so I don't need to practice too much. :-)

[@chinsta00]

Adrian, @1:05:20 wondering what kind of default checkerboard you'd get if you swapped out the functional NEC and used two Hitachi ZIPs?

[@Quickened1]

They couldn't have customers fixing their own Macs by including beep tones... C'mon Adrian

[@rtechlab6254]

Adrian, I think I may have those chips or compatibles

[@SophiaBartholome]

Your channel is one of the few that really enjoys the quality of content. Keep it up!🏡🖲🚜

[@jackrubin]

Thanks!

[@adriansdigitalbasement]

I really appreciate the support! Thanks! 👍

[@jasnic2131]

Hi Adrian, I. See you need help with SMD soldering, I watch another KZbin channel called "Joey does tech" his SMD technique is amazing, I suggest watching some videos for some tips on SMD soldering . He says he's no expert but definitely worth watching

[@winstonsmith478]

So, at the median computer technician pay of $18.92/hour, how much is that board now worth? Priceless?

[@Spudz76]

Subtract the value of education gained and freely shared with others. And improvement of skills with chip swaps. Basically, apprentice pay which sometimes is $0.

[@mckinnon42]

1:13:15 Rossmann has ranted about Macbooks having high voltage right next to data lines for years. Seems Apple started this tradition decades ago 😂

[@309electronics5]

Feature enabled once the battery leaked

[@nysaea]

Game of Thrones who? This saga is where it's at

[@Spudz76]

Imagining GoT theme but done with sadmac samples.

[@nysaea]

@@Spudz76 oh god yes please somebody make it happen!

[@awilliams1701]

I've only seen solder paste in videos, but that looks like it's too much. Usually it's brushed and very, very thin.

[@awilliams1701]

based on what I've seen, I think you want to use hot air to melt the paste before applying the chip.

[@preferredimage]

Does anyone else do the wave at the beginning? I always wave back!

[@Bastler95m]

I think you used way too much paste. you could have used some solder and a lot of flux and tin every single pad then apply some flux again and solder it with hot air.

[@mikesilva3868]

😊😊😊😊excellent video

[@MarijnStevens]

aluminum foil ? please check this because doesnt that tranfer the heat to the parts ? what you want is a isolator

[@codahighland]

No, you actually do want a conductor to carry the heat away instead of soaking it up. The foil isn't making much thermal contact with the board because the air in between IS a good insulator as long as it isn't blowing directly on it.

[@Spudz76]

Have seen isolator used (Kapton tape) but that stuff is more expensive than raiding the kitchen. And more fiddly. And foil works better sometimes, for the reasons given as a heat spreader/conductor.

[@PowerPC601]

I prefer Apple / PC series or even Acorn over Commodore ones. A lot of channels are just Commodore this, Commodore that 😴

[@freeculture]

Well this one if mixed so it adds variety. He even does the odd pc or British 8 bits.

[@jandjrandr]

It was a foregone conclusion that at least 90% of the ICs sitting on data line 32 would be damaged with 12V fed into 5V inputs for an extended period of time. If it was only a couple of seconds maybe not, but it was longer than that.

[@KeesAlderliesten]

Part 2 still unavailable...

[@TheMM360]

I have to admit I think you went a little overboard with this series. I tried following it and never got to the end of any episode.

[@Spudz76]

Can't go underboard because nothing was broken on the backside.

[@PetterWennergren-u4z]

Please more 64

[@OliviaUlises-p3g]

Your channel is not just a source of information, it's a place where every video is a little masterpiece. Keep up the good work!🚴🎯🥌