Apple II+ - Don't store that Apple in the garage (Fixed)

Plating on the RAM legs looks pretty bad.
You might be able to clean them up but it would be a very tedious job. Likely easier to buy replacements. (They're plentiful and relatively cheap)
You will need to pull every chip to inspect the leads. Might be a good time to clean the motherboard while you're at it. If you decide to "wash" it, use diluted dish soap (like Dawn) or use Windex and a soft sash brush (round paint brush) to "scrub" areas that need it. Rinse really well. Have an air compressor handy with an air blow nozzle to clear out the water underneath all the chip sockets and run a hair dryer over it on low heat for a few minutes afterward to be sure it's completely dry.

If the computer worked before storing it in the garage, chances are the components are still good, sans the corrosion on the leads.
Clean them if you can, replace them using eBay as a cheap place to buy if needed. You should be able to get that computer back to top shape in no time.

Post a picture of the full motherboard if you can. Let's see how that looks.

Oh definitely fixable. No doubt.

I just spent time cleaning up a bunch of TI TMS4044 SRAM chips for another retrocomputing project. They had tarnish and oxide similar to your photo. Deoxit and an eraser will take care of it, but sometimes the pins are weakened enough that they'll require repair (out of 64 chips, I had three that I needed to resolder.)

So that's one repair suggestion, but given the earlier observation that these are relatively plentiful, it is certainly easier to replace.

Nice photo, BTW.

Also: If it were me, I'd keep these chips. Love the backwards apple logo on 'em.

I agree with Keatah, definitely salvageable. That board is clean enough that I would skip the "wash" I suggested above.
Just brush-clean it with a small sash brush and be sure there are no "spidahhs" living under the chips. =:-O
According to your photos it looks like a memory chip issue. Likely corrosion as you have noted.

Let us know how you make out with it and good luck!

Not sure if I can revive this but I'm going to try. When booting I hear the beep and I get what you see in the picture on the screen. Any advice would be helpful.

You (or someone) probably can revive this. The beep and video on screen is good. I'd suggest using a pink pencil eraser gently on those tarnished IC legs. I've heard people recommend light-grit sandpaper too. Be gentle of course.

Don't store that Apple in the garage
To my surprise I find a spider nest? In addition, I took a close up of one of the RAM chips and you can see the years of neglect.

My own rule of thumb for computer storage is that I shouldn't store them in any environment where I'd be uncomfortable sleeping.

If I have no more spaces like that within my home, then I must have too many things! :bigsmile:

Hello blegate,

examining the pictures there are 2 points to check:
D0 ROM at position F11: It seems that pin 24 is not inside but besides of the socket.
RAM chip at position E3: If the languagecard is not in the system the RAMchip
4116 must be relocated back from the languagecard to the mainboard while performing the tests!

the ending -3 means that the chip has 300 nS accesstime.

speedyG

I second the deoxit recommendation. Put some on a tip and dab it on the pins prior to insertion. A light film is all you need.

Closest ebay I found is http://www.ebay.com/itm/18PC-APPLE-16K-DRAM-200NS-MK4116N-3IRL-MADE-BY-MOSTEK-/111811389386?hash=item1a087a67ca:g:jkEAAOSwo6lWNQli

Those RAM chips will work fine in an Apple ][.
Save a row of the best you have and replace a couple rows with these.
Take note the eBay ones are untested so be aware of that when replacing.
Good luck!

D0 ROM at position F11: It seems that pin 24 is not inside but besides of the socket.
speedyG

Good eye Speedy!

https://dl.dropboxusercontent.com/u/18695443/Do_Rom.jpg