I broke my Classic :(

[Patrickool93]

I went to my friends house with my Classic in it's bag, did some stuff, and rode home. I was about to cross the street to my house when my neighbor comes shooting out of his Driveway, scaring me and making me turn enough to fall, and the Classic went with me. I shared a few "words" with the neighbor at which point he through a $5 bill at me. I got home, happy to see the plastics were OK. I turned it on and the most horrible crackling noise...appeared? I opened it and the tip of the CRT's neck had snapped off. Anyway the CRT had burn-in, but now its out of commission until further notice. I know this is an early Classic, December 1990, and the CRT was originally from an SE/30, so what are my choices for new CRT's?

 

[MacMan]

Sorry to hear of your accident. As far as I'm aware, the 9" CRTs of all the monochrome compacts are interchangable.

 

[equill]

In the Gospel according to St Apple, viz. the Service Guide to Macintosh Computers, the 128K, 512K, Plus, SE and SE/30 use the part 'CRT and yoke assembly' 076-0103.

Classic, Classic II and Performa 200 use the part 'CRT and yoke assembly (rev. B)' 630-5954, but the Classic only can also use the part 'CRT and yoke assembly (rev. A)' 076-0103.

de

 

[MultiFinder]

Oof, that really sucks man. I hope that you can find someone on here that would be wiling to part out a dead compact.

 

[Quadraman]

Were you on a motorcycle?

 

[Patrickool93]

I was in a bike.

 

[mongo]

I just ran into a bunch of SE/30's. Some computers have good boards others bad PSU's, you know how it is. I'm kinda busy with work at the moment and have not sorted through the lot. Anyway, I'm sure there is a CRT and yoke that I'll be willing to part with.

If you don't find another solution, PM me in about a week so that I don't forget, and I could send you one.

 

[Scott Baret]

CRTs in compacts are as follows:

TYPE I CRT (has big clear connector on the end)

128K

512K/512Ke

Plus

SE

SE/30

Classic with Rev. A Analog Board

TYPE II CRT (has smaller white connector on the end, fits over pins rather than connector on analog)

Classic with Rev. B Analog Board

Classic II (to my knowledge all have Rev B)

Performa 200 (same as above)

To see what type of board your Classic has, open it up. If the CRT connects with a white connector you've got B, if it's got a clear one it's A. Also, most every Classic made in 1990 and many made in early 1991 have Rev. A. Rev. B seemed to have come out around Spring 1991.

Patrick's Classic has Rev. A since the CRT is interchangeable with an SE/30. If he had Rev. B that would not be possible (though modifications probably could be made by someone handy with the soldering iron and the wires).

 

[Patrickool93]

Yeah, it's a Rev A.

 

[tomlee59]

I'm still puzzled by this rev A/B CRT difference. I don't recall ever encountering any incompatibilities. The yokes, yes, but the CRTs themselves, no. I've swapped CRTs from and to just about every conceivable combination of classic compacts (or so I've thought), and the only CRT-specific difference I've ever encountered was related to a rotation of the pins. As long as you swap only the CRTs, leaving the yoke with the Mac, I've not had any problems.

Scott -- you seem to have very complete information on this. Could you clarify?

 

[IPNixon]

Just curious -- how were you carrying the Classic on the bike?

I seem to have a hard time carrying groceries for my mom on the mounted rack, let alone a Classic...

 

[equill]

I'm still puzzled by this rev A/B CRT difference. I don't recall ever encountering any incompatibilities. The yokes, yes, but the CRTs themselves, no...

Given, from the style of writing in the Service Source manuals, Apple's evident expectation about the expertise level in its AASPs, and given also that the Service Guides that I referred to mention 'CRT and yoke assemblies', it may well be that carefree swapping of those will meet problems. Anyone who can deal with differences in yokes and analogue board to video card cables can very probably overcome the rev.A/rev. B conundrum without tears.

Alternatively, as you suggest, swapping only the CRTs may be the Occam's Razor that is needed. That does, though, for the timorous, raise the spectre of 'live' realignment of the CRT.

de

 

[Patrickool93]

I had it in it's bag and it was on my knee as I crossed the street, not a busy street just a residential one. My neighbir is in a habit of flying out of his driveway and has hit many other cars this way before. He flew out of there when I was about to go up his driveway to get to the sidewalk and I swerved out of the way.

I'll just stay with Rev A., Rev A...

 

[tomlee59]

Given, from the style of writing in the Service Source manuals, Apple's evident expectation about the expertise level in its AASPs, and given also that the Service Guides that I referred to mention 'CRT and yoke assemblies', it may well be that carefree swapping of those will meet problems. Anyone who can deal with differences in yokes and analogue board to video card cables can very probably overcome the rev.A/rev. B conundrum without tears.

Alternatively, as you suggest, swapping only the CRTs may be the Occam's Razor that is needed. That does, though, for the timorous, raise the spectre of 'live' realignment of the CRT.

de

I think you're absolutely right, equill. It seems reasonable that they'd expect their techs to replace these as coupled units. I'm sure they weren't thinking of poor retrotech enthusiasts who find themselves suddenly in desperate need of a replacement part, like patrickool93.

For anyone needing to put an old yoke on a new crt, feel free to PM me for instructions on how to do it safely. It's not hard, but you do need to know a few things.

 

[Quadraman]

I had it in it's bag and it was on my knee as I crossed the street, not a busy street just a residential one. My neighbir is in a habit of flying out of his driveway and has hit many other cars this way before. He flew out of there when I was about to go up his driveway to get to the sidewalk and I swerved out of the way.
I'll just stay with Rev A., Rev A...

Heh, I'da thumped my hand hard on his trunk lid then fell off the bike and made him think he hit me.

 

[Patrickool93]

I actually did get hit by a car when I was 5...Different neighbor though....

 

[Patrickool93]

Mongo, I'll send you a PM later today...