We'll be making sure that those responsible for not being able to identify retro' hardware properly and name the video accordingly (not you Dave) will be appropriately chastised. Enjoy the teardown ;)
The 2mb on the floppydrive most likely refers to the unformatted capacity. I’ve got some boxes of 3M diskettes and floppy’s and the 3.5” DS/DD are described as 1mb* capacity. The * says unformatted capacity. I use these with my Archimedes 310. MS DOS FAT can put 720k on them, but other operating systems could squeeze a bit more on them. Did you know that the Windows 95/98 setup disk have 1.6mb on them, whilst it is just a normal HD diskette. Microsoft created a slightly customised FAT image for those disks. It is possible to format disks to that capacity with certain special tools such as Omniflop/Omnidisk.
We restore a lot of SE/30s. They need recapping at this point in their life. Definitely early as later revisions did not have the cpu socketed. It has had it's ram slots replaced at some point (4 top bank). That bodge I believe is factory as i have board I'm working on that also has it. That board ABSOLUTELY needs two things: Recap and its battery removed. Please, take this seriously as these are very valuable. If you're in the states, I'd do it for free just to keep another SE/30 alive! Also, it needs an ultrasonic cleaning.
As i was reassembling it, I gave everything a clean with IPA - which helped, but yes, USC would be better. I'd happily recap it (about the only thing I feel I can routinely do well) and pass it onto a collector! I fell bad that it doesn't have a ADB keyboard and mouse though.
@@a531016 Our business is just old vintage computer restoration, so we deal with this a lot sadly. The IPA will at least temporarily put off the damage but the caps should be removed(the smd ones really). They are all 47uf 16v but the smallest which is 1uf 50v. One through hole cap is 470uf / 16v the other is 220uf / 16v. Where are you located? I could definitely find you someone who'd love it. Have a lot of customers.
Hey Thomas! Do you guys restore Macintosh Classic’s? I have one and sadly it would not boot. I have opened it to inspect for leaking caps but nothing was visible.
10:54 The ROM does contain the microcode necessary for the system to boot, but did not actually contain the operating system. The OS was stored on disk, and you could either boot from a floppy, or boot off a hard drive. The only Mac to ever include an OS in ROM was the Mac Classic. Apple had considered marketing the feature, but decided against it near the end of the Classic's development. Rather than rework the ROM to remove the feature, they just made a minor modification that defaulted to booting from disk, but added the ability to manually boot from ROM by holding the key combination Command-Option-X-O.
@@GuyPaddock No. That was a ROMSIMM. The board even labels the part (where he shows the broken clip, it briefly comes into focus). Some of these older machines put ROMs on SIMM modules... It is memory, much like RAM... You just can only read it. Today, we have the option to flash new Firmware, but back then, that tech wasnt yet available. If you had a bug in the ROMs that needed updating, you had to replace the ROM chips.
I just found one of these for $100 in a thrift store.. based on sold ebay listings I decided to buy it. This video will help me so much checking the health of the various components.
CPU used in this device was a 68030 running at 16 MHz, possibly 20? It’s been too long but 16 MHz sounds correct. Floppy drive would have been 1.4 MB formatted capacity, there is an edge connector along the right hand side of the motherboard I don’t remember how many connections are on that but that was what they called an SE 30 bus or a new bus connector again don’t recall you could install video cards that were used in the Mac to family.
I believe you also could install an upgraded CPU in that same socket that was on the right. Also there were cards from radius so you could have flip for portrait or landscape, also color cards for video. I also believe there were a couple of companies that had token ring that could be installed into that same connector.
My floppy drive in my SE stopped working and I took it apart to clear and repair the floppy. I had to disconnect all the ribbon cables etc during the teardown and I put it all back together after cleaning and lubing the floppy drive and now the SE doesn't read the HDD any more. I've double checked every ribbon cable and I was so sure they're in the right spots but all I'm getting is the disk with the ? in it on bootup and I've checked every teardown video on youtube and none of them show where to attach the cables and I'm getting so frustrated I'm about the throw the computer across the room.
As someone who used to bench repair these, seeing you play about inside the machine without removing the tube connector is cringeworthy. it is so easy to knock the end of the tube off by hitting that PCB.
Maybe that hidden port on the board is part of the bus for QA testing? I know Atari 8-bits had done that with PBI busses on their XL/XE machines (even on machines where the bus is hidden).
No, it started in motorbikes with Harley Davidson around 1916-1918, & followed up with the 50s Vincent Black Shadow. There were others, like a Fordson tractor from the first world war. And yes, it's a personal computer. Anyone offended by that is stupid.
Just what I was going to ask! I’ve seen early SE/30s with the signatures in but not sure when they dropped it, I have a classic (much later) and that definitely doesn’t sadly, it’s one of those touches I loved about the early Apple stuff you still got that ‘pirate flag’ waving over the campus feelings with them
Maybe another pr9ject for you to consider is one of the original S-100 boxes, such as the CompuPro 8/16 systems. I know a bunch of those boatanchors are still out there.
@@a531016 Yup. My interest, actually is a bit personal. I wrote BIOS firmware and device drivers for CompuPro 1982-1987, including the entire Forth o/s for the 32016 boards. You can intercut a short clip from Buckaroo Banzai as CompuPro boxes were used as props for the movie. I don't know if those were working. 😁
Note. If you ever get hold of a Disk-3 hard disk controller you may be amazed that we could get full Winchester performance from an 8085 cpu as an embedded controller, albeit at 5MHz. There was a PROM hardware state machine for doing the data separation. Nifty,eh?
We'll be making sure that those responsible for not being able to identify retro' hardware properly and name the video accordingly (not you Dave) will be appropriately chastised. Enjoy the teardown ;)
The 2mb on the floppydrive most likely refers to the unformatted capacity. I’ve got some boxes of 3M diskettes and floppy’s and the 3.5” DS/DD are described as 1mb* capacity. The * says unformatted capacity. I use these with my Archimedes 310. MS DOS FAT can put 720k on them, but other operating systems could squeeze a bit more on them. Did you know that the Windows 95/98 setup disk have 1.6mb on them, whilst it is just a normal HD diskette. Microsoft created a slightly customised FAT image for those disks. It is possible to format disks to that capacity with certain special tools such as Omniflop/Omnidisk.
I believe the Mac altered the spin speed for different tracks, to squeeze more on.
We restore a lot of SE/30s. They need recapping at this point in their life. Definitely early as later revisions did not have the cpu socketed. It has had it's ram slots replaced at some point (4 top bank). That bodge I believe is factory as i have board I'm working on that also has it. That board ABSOLUTELY needs two things: Recap and its battery removed. Please, take this seriously as these are very valuable. If you're in the states, I'd do it for free just to keep another SE/30 alive! Also, it needs an ultrasonic cleaning.
As i was reassembling it, I gave everything a clean with IPA - which helped, but yes, USC would be better. I'd happily recap it (about the only thing I feel I can routinely do well) and pass it onto a collector! I fell bad that it doesn't have a ADB keyboard and mouse though.
@@a531016 Our business is just old vintage computer restoration, so we deal with this a lot sadly. The IPA will at least temporarily put off the damage but the caps should be removed(the smd ones really). They are all 47uf 16v but the smallest which is 1uf 50v. One through hole cap is 470uf / 16v the other is 220uf / 16v. Where are you located? I could definitely find you someone who'd love it. Have a lot of customers.
Hey Thomas! Do you guys restore Macintosh Classic’s?
I have one and sadly it would not boot. I have opened it to inspect for leaking caps but nothing was visible.
10:54 The ROM does contain the microcode necessary for the system to boot, but did not actually contain the operating system. The OS was stored on disk, and you could either boot from a floppy, or boot off a hard drive. The only Mac to ever include an OS in ROM was the Mac Classic. Apple had considered marketing the feature, but decided against it near the end of the Classic's development. Rather than rework the ROM to remove the feature, they just made a minor modification that defaulted to booting from disk, but added the ability to manually boot from ROM by holding the key combination Command-Option-X-O.
Is it possible that chip was the VRAM or video card instead of the ROM?
@@GuyPaddock No. That was a ROMSIMM. The board even labels the part (where he shows the broken clip, it briefly comes into focus). Some of these older machines put ROMs on SIMM modules... It is memory, much like RAM... You just can only read it. Today, we have the option to flash new Firmware, but back then, that tech wasnt yet available. If you had a bug in the ROMs that needed updating, you had to replace the ROM chips.
@@richfiles ah, thank you! I just learned a new thing.
I just found one of these for $100 in a thrift store.. based on sold ebay listings I decided to buy it. This video will help me so much checking the health of the various components.
Earlier versions had all the designers names in the inside of the case, engraved into the plastic of the moulding.
I didn't sport anything - but I really want to go back and have a closer look now!
@@a531016 No, very visible on the first generation cases inside, all the names in there in the case.
CPU used in this device was a 68030 running at 16 MHz, possibly 20? It’s been too long but 16 MHz sounds correct. Floppy drive would have been 1.4 MB formatted capacity, there is an edge connector along the right hand side of the motherboard I don’t remember how many connections are on that but that was what they called an SE 30 bus or a new bus connector again don’t recall you could install video cards that were used in the Mac to family.
I believe you also could install an upgraded CPU in that same socket that was on the right. Also there were cards from radius so you could have flip for portrait or landscape, also color cards for video. I also believe there were a couple of companies that had token ring that could be installed into that same connector.
Thanks a lot for this video! It helped me fix mine, now it almost works like a charm :D
I would have removed the battery unless it was very recently replaced, just in case.
I think that will come with a recap some time in the near future!
"They're big. Im not used to seeing them that big"
oh, Ive heard that before ;-)
My floppy drive in my SE stopped working and I took it apart to clear and repair the floppy. I had to disconnect all the ribbon cables etc during the teardown and I put it all back together after cleaning and lubing the floppy drive and now the SE doesn't read the HDD any more. I've double checked every ribbon cable and I was so sure they're in the right spots but all I'm getting is the disk with the ? in it on bootup and I've checked every teardown video on youtube and none of them show where to attach the cables and I'm getting so frustrated I'm about the throw the computer across the room.
My SE/30 have the same bodge wire - I'm pretty sure its factory standard..
(but its not working anyhow unfortunately ..despite being recapped)
As someone who used to bench repair these, seeing you play about inside the machine without removing the tube connector is cringeworthy. it is so easy to knock the end of the tube off by hitting that PCB.
what size torx driver are you using to open up the case with ?
Maybe that hidden port on the board is part of the bus for QA testing? I know Atari 8-bits had done that with PBI busses on their XL/XE machines (even on machines where the bus is hidden).
That's the kind of thing I'm expecting, but can't find any info one way or the other?
Hi, I need your help. It's possible your orientation? How can I remove a floppy disk from Macintosh SE? Please
Did the CPU and graphics card runs without an heatsink?
it was a different time back then. in a lot of old computer heat disspiation over the pcb and via airflow was enough.
Raspberry Pi don't require a heastink or cooler to work and they operate at good temps.
No, it started in motorbikes with Harley Davidson around 1916-1918, & followed up with the 50s Vincent Black Shadow.
There were others, like a Fordson tractor from the first world war.
And yes, it's a personal computer.
Anyone offended by that is stupid.
Did that case still have the signatures of the design team/employees on the inside in the plastic?
I didn't spot any, but I want to have another look now!
Just what I was going to ask! I’ve seen early SE/30s with the signatures in but not sure when they dropped it, I have a classic (much later) and that definitely doesn’t sadly, it’s one of those touches I loved about the early Apple stuff you still got that ‘pirate flag’ waving over the campus feelings with them
I REALLY wish you didn’t skip right over the part where you disconnect the things from the motherboard 😒
Maybe another pr9ject for you to consider is one of the original S-100 boxes, such as the CompuPro 8/16 systems. I know a bunch of those boatanchors are still out there.
Good suggestion! I'll keep an eye open for one!
@@a531016 Yup. My interest, actually is a bit personal. I wrote BIOS firmware and device drivers for CompuPro 1982-1987, including the entire Forth o/s for the 32016 boards. You can intercut a short clip from Buckaroo Banzai as CompuPro boxes were used as props for the movie. I don't know if those were working. 😁
Note. If you ever get hold of a Disk-3 hard disk controller you may be amazed that we could get full Winchester performance from an 8085 cpu as an embedded controller, albeit at 5MHz. There was a PROM hardware state machine for doing the data separation. Nifty,eh?
The CRT is made by Samsung In Korea, therefor Korea on the PCB.
Sweet Macintosh Classic II 😂
I can imagine guys sitting around astonished by the 40mb