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Classic II Blank Screen

Acetone is to stop the cap goo from rotting the board any further. It is not going to help fix the machine because the caps themselves are either open or shorted out and to fix it they need to be replaced.

As is, the caps are still leaking and that goo is eating away at the board wires, breaking them. The more they break, the more work needs to fix it. Putting the board in acetone stops the goo from doing any further damage. That is why it must be done.

When the caps are replaced in the recapping process, the board is restored to near normal and most of the time will boot up on the first go. Most of the time. Question is, how much damage the cap goo did to the board and needs to be repaired? Most of the time this is minimal, and for Classic II easy to do. If this was a LC475, lets say... it becomes a much harder job to do.

So soak in acetone and then send to get recapped?

 
Well dont let it soak for 3 hours. You *might* not have much of a board left after. I never use acetone to clean my boards because I know it can easily dissolve certain plastics. Or make them very soft. But I can not say what plastics are used for the boards and never wanted to test drive it. Not saying its bad to use it, its not, just be smart.

 
Okay so I tried it again and I'm still getting the lines with static around it. Can anyone who does recapping tell me where they are so I know which one is closer?

 
Which one is closer? Recap all mobo caps. Recap analog if voltages dont check out. Thats all ya gotta do.

 
I third it - Send it to Unsierver. He does an excellent job on recapping and he (as he told me long ago) guarantees his work. So when you get it back from him, it will work.

If it does not work, which I highly doubt, then the analog board needs recapping too. I do not believe it is the analog board from what you shown here so when you get it back, it will work.

I think I stated before, while the logic board is out for recapping, clean out the case. Put a vacuum to the fan of the bottom of the case and get the dust out of there.

Once you get the Classic II running again, you will be happy. Very Happy!

 
I third it - Send it to Unsierver. He does an excellent job on recapping and he (as he told me long ago) guarantees his work. So when you get it back from him, it will work.

If it does not work, which I highly doubt, then the analog board needs recapping too. I do not believe it is the analog board from what you shown here so when you get it back, it will work.

I think I stated before, while the logic board is out for recapping, clean out the case. Put a vacuum to the fan of the bottom of the case and get the dust out of there.

Once you get the Classic II running again, you will be happy. Very Happy!

Yeah, I have a feeling that in a while all of these old apple machines will be worth a pretty penny.

 
Yeah, I have a feeling that in a while all of these old apple machines will be worth a pretty penny.
Oooo.... That is a touchy subject. The value of a working machine is high because it is working but it is not as high as one may think. It is not like a certain Ferrari Dino series which only 6 were made.

Consider this - the original price of the machine when it was sold, minus 10% for every year until on the 10th year is is worthless - $0. (This is insurance and FEMA recovery rates of lost items.) But after that is the machine has some value? I think it does. What does it cost to replace it? What does cost to repair it? Are there special things about it? What values are collectors and people like us put it at? How much you got it on ebay at that condition? And are you getting some use out of it, even fun? There is the value of the machine. You might have to wait 100 years for it to go at the original price, but what it is worth now, you got something.

 
Oooo.... That is a touchy subject. The value of a working machine is high because it is working but it is not as high as one may think. It is not like a certain Ferrari Dino series which only 6 were made.

Consider this - the original price of the machine when it was sold, minus 10% for every year until on the 10th year is is worthless - $0. (This is insurance and FEMA recovery rates of lost items.) But after that is the machine has some value? I think it does. What does it cost to replace it? What does cost to repair it? Are there special things about it? What values are collectors and people like us put it at? How much you got it on ebay at that condition? And are you getting some use out of it, even fun? There is the value of the machine. You might have to wait 100 years for it to go at the original price, but what it is worth now, you got something.

I didn't buy it just to sell it again though, I bought it because I wanted a vintage computer. I don't really plan on selling it at all.

 
Great to hear, bman12three4! And I wish you the best in getting this fixed one way or another.

There are people out there that do this - buy and then try to flip a Mac. The returns on this is quite low, especially if one has to repair the Mac before flipping it. The time, parts and money to fix it may be more than the actual value of a Mac they are trying to flip.

I collect old Macs on the basis that those were the machines I've used at work or personally at home. So I bought a few here and there and others I rescued from the trash. It's been fun working with all of them. (It also explains why I have more laptops than anything!)

Except for a few things, I find the older computers more useful than the newer ones.

 
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