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http://www.discovery.com/tv-shows/mythbusters/mythbusters-database/salsa-eat-through-bars-of-jail-cell.htm We aren't trying to dissolve a prison bar, just a small trace on a motherboard, so it is more than likely possible.

You don't need a PRAM installed to start a CC do you?

What's weird is it turns on, even with the motherboard installed using the keyboard power switch, but the only thing not happening is the CRT displaying anything. It doesn't even light up. I guess the motherboard is not giving a video signal, since the CRT energizes?

Sounds like there is no way to fix it?

I recapped my Color Classic today, hoping that would at least make it turn on. I hit the power switch, nothing.. not a single click. Right, the keyboard power switch, duh! It fired up, but the screen didn't light up, and there was no chime. I could tell the flyback energized because I could feel...

Face twitching... I hope these Macs are not gathering to conspire! I visited my electronics surplus shop again today for vintage Macs. I started picking through the shelves of vintage Mac and PC gear, and found some things I didn't know were there last time, since I looked more thoroughly...

Tap or distilled? I have washed the board three times now, but there seems to still be buildup of some type of goop around the ICs. Not sure if it is cap goop or the left over minerals from the tap water. I am just using regular dish soap, I am yet to buy the ammonia I need for cleaning them.

Which caps are the audio caps?

I just finished recapping a Mac LC, so I fired it up only to hear a screeching/whistling sound from the speaker. It's not a solid sound, it randomly fades pitch up and down. Other than this, the LC works fine and there aren't any artifacts in the video as far as I can tell. I think it did this...

Just opened up my SE/30 from eBay today, it booted to a screen with lines on the top and checkerboard at the bottom (caps). I turned it off, then turned it back on to take pictures for this forum... it booted right up! The only issue is some flickering lines on the bottom and top of the display...

I see this a lot. People put pricey items for sale and don't even bother to wipe them off with a bit of Windex or alcohol. If you are going to ask $100 for a computer, the least you could do is wipe it off! Taking a few minutes to clean it up a bit not only means a quicker sale, but you could...

The place I found the diodes requires you to buy a minimum of two, so I guess I will just trash the original and add the new ones in series.

So I desoldered the diode, and the PDF says to connect it in series to another diode of the same type. Why can't you just replace the diode? It also says to put in a new capacitor at C34, but it doesn't sound like it is required to do so. Would I be fine by leaving C34 as it is?

Is the heatsink necessary? Would it be an issue if I didn't re-install it?

I took out a working Astec PSU from one of the LCs I got in a lot and began checking for leakage. Sure enough, leaked caps! Not too bad, but better safe than sorry. Got the caps today, noticed three were the short, fat kind that you have to manipulate correctly just to get them to fit. I...

My question is why to solder the new diode in series with the old diode; couldn't you just replace it?

Should I be worried about the PSU caps leaking?

I recently got a Macintosh IIcx with some other stuff which is in need of repair. Today I went to power up the IIcx to see what the deal was...nothing.. not a single click, or so I thought. The noise the PSU was making was drowned out by the click of the power button. I held the power button...

I will certainly recap and clean the L/B, but I see something that looks like slight leakage on the A/B. I will recap the L/B first, then find out what I need for the A/B on mouser.com. Anyway, even if everything works, it is missing the case screws, so when you pick it up by the back bucket...

Yep.