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I’ve always wondered if the portable would be compatible with the IIe PDS card, I tried googling and couldn’t come up with a result, I own neither but I’m just curious. I know there would need to be some kind of riser card to allow the IIe card to connect to the PDS slot but disregarding that is...

Is it p Is it possible that we all have different rev boards? 

I figured, I’ll buy a battery on amazon, I saw I can get the tadiran original battery so I’ll buy one of those

It says LC III on the board 

I was always under the impression that the LC III needs a battery to work, mine will not display video without one but as soon as I install a battery it works just fine

All of my machines (very few left due to an accident a few years back) have their PRAM batteries removed, unfortunately this machine needs it in order to display an image  :(

Ah okay, I’ll get some on amazon, I’m probably going to attempt this Recap myself but If not I’ll definitely send it your way:)

I recently took a gamble on a non-working LC III logic board on ebay, it turns out a quick isopropyl wash got it to chime and boot, only problem Is that pesky PRAM battery as it controls video on these models and It makes me worried leaving one in the machine, has anyone come up with a solution...

I wonder if maybe the act of baking it is introducing condensation as it cools back down, my thinking is that warm air holds more moisture than cold air, meaning the act of baking it will dissipate the moisture until it has completely cooled, at which point the moisture condenses and ruins the...

I’m thinking of buying a PowerBook duo with bad tunnel vision, maybe I’ll try restoring it with this method, has anyone had good lasting results with this?

Just to make sure, you are measuring the output when the power supply is connected to the logic board right?

It however still will not boot or chime or show any signs of life, I think I’m about ready to give up on this motherboard

I removed and cleaned underneath of it, still nothing, however, now when i bridge some of the pins on the EGRET i get a sad mac chime so i think we might be getting somewhere

I’m assuming this is the egret?, should I just reflow the pins or get a new one?

Long story short My LC II refused to boot one day and I suspected it was the power supply, after replacing the power supply the hard drive would spin up along with the system fan and the processor gets warm after awhile but no image would appear, there is no audio and no response to the keyboard...

The capacitor itself looks fine and there’s no direct shorts to ground anywhere, I’ll switch it around and see if everything is okay, I still need to get a new power supply, but does anyone know what C21 does? 

Is there any chance that it’s only the capacitor that is damaged and the board is fine?

I powered it up with the cap backwards yes

I accidentally soldered a tantalum capacitor in backwards on C21, I was try to diagnose a faulty power supply and I decided to resolder all the caps on the logic board to check that they weren’t the problem, the power supply was dying but I’m still worried i fried the board, am i okay?