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@Certificate of Excellence I’m not on the board. I wasn’t elected to be on it. But I do not consider what you wrote in any way whatsoever hijacking this thread. In fact, I think it benefits this thread and really is necessary for a complete transparency.

What epoxy, specifically?

As a founding member, I do not subscribe to the theory that the existing board is tantamount to "red tape," nor has the existing number of board members in any way hindered this forum. Could it? Well, anything is possible. Has it? No, having 6 board members plus our IT people has not...

At what temperature for each bake, and were thermometers used to confirm those temperatures?

@letiss Glad to hear your diode swap solved the problem. And since it's now working for you, there's no need to change anything, but I just wish to mention that I used a higher wattage Zener (single Zener) along with a copper heatsink, which you can read about here...

Details of "bad audio" are important, so thank you for clarifying. But in my mind, bad audio is bad audio, and all bad audio needs to be addressed. My Portable has no volume level issues. The loudness is about what I would expect, both from the speaker and headphone jack. It's never too soft...

Bad sound like @David Cook and myself, actually. We both have 5126 machines which produce a "tick" sound every 10 seconds. I call that "bad sound." David explains the reason for the tick anomaly here: Apple patched the sound watch code to keep sound power enabled with a check every 10...

Fantastically detailed repair thread, @David Cook — thank you! You said: "The biggest mistake when repairing these machines is providing power during testing to only one of the +V inputs." QUESTION: Is your photo below showing us what we SHOULD do or should NOT do? (What my eyes see in that...

Sony Mavica floppy disk camera photos! Love it! The translucent brown 4700 pF is a Type Y (line-to-earth) safety capacitor. Not sure if it's Y1 or Y2, but it's probably 250VAC rated, which means that either Y1 or Y2 can be used. That's because Y1 offers an 8,000V impulse rating, while Y2 is a...

Hi, @phipli ! A "memory timing" tweaker — very interesting! I also see we defining the 475, 476, 575, 577, 605, 610, 650 and 800 as being the "Wombat family" of vintage Macs. The file you graciously attached for us appears to be an alternative to using your excellent 475 Overclock software...

@daanvdl Thanks! I just added a link to your Github in the "Recapping" tab of my Mac Portable spreadsheet here: https://docs.google.com/spreadsheets/d/1m5aapJJs2hmjemjGnY3HjAuVnbH9uIF0SWSehzGOOQ4/edit?usp=sharing

Thank you for the excellent graph, @moldy! @techknight has an excellent video showing precisely what kind of damage a PowerBook AC Adapter does to a Macintosh Portable: So Portable owners must stick with the M5136 adapters OR buy a Portable Battery Eliminator so you can use any AC Adapter...

But would the spots have resulted from 5~20° (°F?) higher than your chosen bake temperature, or would the spots have results from a SECOND BAKE regardless of temperature? Separately from that, i agree that having a turkey thermometer or similar in the oven during the bake is key, and that is...

Wow. That LCD looks perfect from what I see in those two photos, with no unusual lines on the screen, no darkness at all that I can see, and no darkness in the upper right hand corner either. In one of your earlier photos, you photographed a screen that had a little bit of curved darkness in...

I normally leave the white vinyl cover on the solder side of the analog board off so that I can more easily measure voltages at the very back of the main connector where the main harness will connect on the flipside of the board. And almost always, that voltage level is going to be higher than...

Wow, that’s pretty neat. I must assume that in all of your machines you are using the stock wiring harness, whereas my harness has been upgraded to 16 gauge wire. Wire thickness has a rather dramatic effect on the voltages you will read at the external floppy drive port. Another important...

Sorry for my delayed response. On one of my SE/30 Analog Boards (all 3 of which report 5.04V at the FDD connector via Mac-O-Meter), I measured the following tonight: Collector of Q2 is 19.68V. Pin 14 of U1 (74LS38) is 4.878V Sorry, but I didn't have time to do a board swap to test the SE/30...

Agreed. But thank YOU, David, for your time and effort. I always stand in awe of your creations, and this time is no different. Oh... Try putting the Portable on your lap in bed. I did that the other night and it was pretty crazy. Fun, but crazy. And I don't even have a lead acid battery...

THE definitive solution for every 5126 Backlit Macintosh Portable owner's sanity! @David Cook , you are a miracle worker! I announced your Macintosh Garden page on my YouTube channel (via Community post) and in the Vintage Apple Macintosh Enthusiasts FB group just now. I also added a link to...

I'm at home now and finished testing. I booted from your *.dsk and 1 minute later, auto-sleep worked just fine. Of course, I hear that bothersome pop every 10 seconds because the Portable C.P. isn't the hacked version, but as we've discovered, the hacked version prevents sleep. After that, I...