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I retain some of Gamba's design notes, at least those that had not been given away to others before I met his sister. The only CRT socket info I can find in his notes is APCO EIA-1210, which does not search well. The pins are the regular 7 pin miniature tube socket spacing so various sockets...

[8)] ]'> Hmmm, you've been lucky AND you've been good! Sounds like something to celebrate to me! [:D] ]'>

Check also C1, C7, C12, C13 which are also +5V bypasses to ground that you probably recapped (47uf/16V). There are also a ton of .1 and .01 SMT caps on the underside that bypass +5v, however these rarely short unless mechanically disrupted. The recapping process involves a lot of board...

You might now have a parts unit, and a reference board at least for the non corroded areas. register is right about the SE/30 power supply having a minimum load specification, but hard to say if any damage resulted from this one instance however. Some might get the impression that replacing...

Epoxy might be too strong, and hard to remove later should you have to rework anything in the bonded area. Good for pad repairs, maybe too good for parts support! Imagine trying to break an epoxy bond loose years from now and peeling off some traces underneath in the process... One approach...

Drilling a solder filled feedthru can cause the inner plane connection(s) to be lost if the drill removes the feedthru barrel. So if you have really tiny drills, accurately centered, ok. Better to suck it out with a antistatic solder sucker, solder braid, or melt it and punch thru with a...

C9, 47 uf/16V is the bypass to ground for -12V coming in on J12-7. So the positive side goes directly to a ground feedthru exactly between C9 and C8 and nearly on the centerline of C9 and C8. On the bottom side artwork you will see it hit the corner of two perpendicular traces connecting to...

On the mouse: yes, I double checked, $79 for the wedge shaped Apple ADB mouse... and $109 for the square Apple IIe mouse. On the CD caddy: Arrgh, I screwed up folks, sorry, it was $39 for a box of five. To make amends, I'll list a few more from summer 1993, double check and hope to not make...

Sometime in 1992 Apple mailed out a printed catalog, "The Apple Catalog Premiere Edition 1992", to those on their customer list. Some examples: PowerBook 145 4/40 $2149 PowerBook 145 4/40 with internal fax/data modem $2374 PowerBook 160 4/40 $2429 PowerBook 160 4/40 with internal fax/data...

Look for PB1XXModem.sit at the new hotline techfury90 set up (thanks!), at ueberlandowiki.net (currently in the uploads area, probably should be relocated to Drivers). If you have the software for using external modems working (recommended as a first step), adding this may allow you to connect...

Look for PB500DuoModem.sit at the new hotline techfury90 set up (thanks!), at ueberlandowiki.net (currently in the uploads area, probably should be relocated to Drivers). If you have the software for using external modems working (recommended as a first step), adding this will allow you to...

Some additional measurements made today (current drain just powered up, no attempt to run software): two oval Apple Desktop Bus Mouse II M2706: 2.87 mA, 4.73 mA Kensington NoteBook (numeric) KeyPad 3.1 mA Wacom ArtZ Graphics Tablet UD-0608-A spec is .1A, measured 90 mA three Connectix Color...

I too have seen a warning with respect to the Mac Portable ADB, something in the Guide to the Macintosh Family Hardware about "could cause an unacceptable decrease in the +5 volt supply voltage and result in improper operation", but I have not seen a power spec. I remember measuring and marking...

As a guess based on only a few topside measurements on a scrap mobo, the sound comes out of UB2 and UB3 pin 11, goes to the + side of C2 and C3 which are 47 uF 16V aluminum SMT caps (could easily be faulty open or short), then proceeds out the - ends thru 180 ohms and possibly some underside EMI...

The Duo one is half that size, sort of square, see picture at http://www.haun-online.de/Macintosh/HTML/duo230.html My Service Guide mentions two flavors: a domestic version with RJ-11 connector, and an international version with a Mini DIN-8 connector. Perhaps someone with more familiarity...

Looks identical to Powerbook 100/140/145/160/170/180 Domestic Modem, Internal, Apple P/N 661-1621 as pictured in my Apple Module Identification Service Guide, Sept 90 edition (also shows marking 820-4021- B) .

And while you have it open, also look very carefully at the hub shoulder surfaces that try to assure that the disk rotates in a plane with minimal wobble. If there is too much lint, or worse one grain of grit caught on the flat circular friction ring clamping zone, the disk will have an up and...

Is it the sound of the HD spinning up and setting the heads over the parking area track just once, or do you hear the ton of seeks and transfers that are normally associated with the boot up process?

UC6 and UC7 are video DRAM, mine are soldered into the PCB. They have been known to go bad. But also on the suspects list is the row of video address and data multiplexers/shift register UA8 thru UG8 that are vulnerable to electrolytic leakage particularly from SMT cap C2. Inspect carefully...

An additional technique is to use a time machine, namely the internet archive, http://www.archive.org/ to attempt to access broken links and old copies of websites. Just type your link into the wayback machine and test your luck. The http://www.home.earthlink.net/~gamba2/ site has many...