Wrap items firmly, please

Wrap items firmly, please

This one from South Florida - for the most part I've had excellent wrapping and experiences in nearly 40 orders, but there have been a few exceptions.

This is for everyone though, items *must* be firmly wrapped so they can't move about, this is even more important as items get heavier. In this particular case and this particular Mac, the construction is metal, so they got real lucky (and FedEx delivered it upside down) and there does not appear to be any damage. However these old electronics are antiques like anything else - a lot of the older machines use plastics that are just not robust.

The prior damage I had and am waiting for a claim on had the main item secured properly, but the power supply was floating about and was bust up. Everything must be secured.

u/anotherspaceguy100 — 24 hours ago

Apple IIe / PowerMac haul update

I got asked for some updates from this post yesterday:

https://www.reddit.com/r/vintagecomputing/comments/1ueiupd/todays_haul/

Here's the inside of the IIe. You get the idea. There's also a disk drive card for the two floppies. There's a memory expansion card, and some other cards I didn't identify yet. I'll clean it up and pass it on to someone more enthusiastic.

One of the PowerMacs did turn on (although the power momentary button is falling apart, have to see about that), but the drive is non-responsive.

The other machine went pop when powered up, no surprise there. Motherboard looks OK though, just really dusty. This machine did have 2 SCSI drives installed, and I was able to boot one another machine into 8.5 and it has a dual-boot Linux setup (2.4), although that didn't boot - I think possibly the Linux filesystem is on the other drive.

All the plastics are in terrible shape, lots of breakage. I think I'll likely take the best parts from both and make a complete OK machine, and pass the rest along for parts.

The monitors, well, I don't know yet; the tubes are intact; one needs a new video connector at the very least. I will power those up in the garage just in case.

u/anotherspaceguy100 — 11 days ago
▲ 231 r/vintagecomputing+1 crossposts

Today's haul

Went to pick up a 1571. Accidentally came home with an Apple II and 2 PowerMacs.

Very dirty (insert mom joke here).

u/anotherspaceguy100 — 12 days ago

Apple IIgs Woz restoration

I picked this up for probably too much money knowing the magic smoke had escaped. The PSU was still producing voltage, but probably not enough current and the machine was having problems. I used the recap kit from Console5 (I probably could have found myself, but chasing weird sized caps is getting old) and after some dubious soldering back in action, and added the battery setup after.

The memory expansion card is faulty, so we'll have to see about finding replacement chips and maxing it out.

To be honest, not sure what I'll do with it, but it joins the gang of "how far can we push the original 8-bit architecture machine" (yes, I know it's 16-bit) with my BBC Master 512K and Commodore 128. The video output on my 1702 isn't that great with composite, so looking at options for that - either to my 1080 or RGB2HDMI (although that's wired to my BBC Master).

u/anotherspaceguy100 — 1 month ago

Oops - cracked iMac G3 slot loader

No, not shipping damage, and don't worry, I only paid $40 for it not working - it appears to have a problem with the down convertor which I was investigating. It seems like the plastic was all being held together by the front bezel and fell apart when I took it off. The plastic is incredibly brittle - perhaps it sat in the sun or something. I guess I'll try and fix it anyway, maybe try and glue back the major pieces. Perhaps it'll just be spares in the end; open to suggestions.

u/anotherspaceguy100 — 1 month ago

1541 Alps drives failures

So I have now quite a large graveyard of 1541 parts, and have done quite well refurbishing drives of both types - I found the Newtronics to be more robust in practice, assuming the head isn't bad.

I've also mentally been assembling a drive failure guide - a lot of the info out there is quite scattered, now missing or just not current. I'm far from an expert on these drives, but I can now identify a good deal of the major failures, and hope to write a modern troubleshooting guide up, hopefully get a lot of input from you guys to improve it.

Anyway, I have a stash of good boards I've re-capped (at least C15 and C21) and are working correctly against a good reference (Alps) drive.

However, what's stumping me is what appears to be a consistent failure on the Alps drives - again, against knowing working logic boards (and I know being analog devices issues here might compound, but the problem does seem to be the drives themselves).

All these drives (4-5 of them) have been lubricated, heads cleaned, have been physically exercised and as best I can tell, are mechanically operating correctly. In some cases, I've put in new belts, although that seems to sometimes compound problems in iffy drives. The problem is that the drives cannot read anything, with the error "drive not ready". In the 1541 diagnostics for the speed check, they simply report ERROR (I note this can happen for a number of reasons).

I went around and checked the resistance of all the connections all the heads, and everything checks out in the 11-17 Ohm range. Now, I do have one drive I've identified as having a bad read/write sensor so I'll have to see about replacing that. I don't think that's the problem on the other drives, but can't rule that out.

I realize that I'm fighting entropy here with physical mechanisms and so forth, but what's going on here? Is it some consistent mechanical failure? Is it a failure of the caps on the drive's small control board - hints please and thank you.

reddit.com
u/anotherspaceguy100 — 1 month ago

Swivel Monitor Restoration

Fixing this up more out of curiosity than anything. The plastic of course is very brittle, I'll see what some resin can do. The pots hopefully clean up a bit. It does work, but the pastel output from my VIC-20 and C64 isn't doing the green monochrome screen justice and probably overall it's seen better days.

I don't think I'll recap, working on monitors isn't my usual thing.

u/anotherspaceguy100 — 2 months ago

This is from a free drive I got. That rear cap isn't looking so hot. But what's going on here, and where is the second clip supposed to go?

u/anotherspaceguy100 — 2 months ago