It's possible, they dont look like they have leaked, but it couldnt hurt, any other ideas?

So...I finally got another ADB keyboard and a vga adapter...and as luck would have it...I also got my local surplus store (Astro Too)'s lone AAUI adapter. Tada! I have it all hooke…

Yeh I can't see too many circumstances where the brightness would need to be hard-altered unless an actual compoonent was failing and causing the screen to dim... there seems to be…

Yes, but its controlled via software anyway. So it more of a way to hardware set the max brightness.

That would make  a degree of sense also given the lack of external brightness control knob. Cheers!

Brightness is lower I think. Upper is either contrast or focus - I use it to sharpen the display.

So, under that cover panel on the Classic just above the power switch, there are what appear to be two unlabelled adjustable potentiometers or such on the analogue board... I've ne…

There was no result of the initial powerup, but C12, Y1 and D1 were all missing.  The analog board seems to be fine, and (if I'm not misremembering), there was power to both the fl…

128K, 512K, Pluses and SE's rarely need a logic board recap. But they do need work on the analog board. Check for cracked solder connections on harness connectors to the logic boar…

Its salvageable. The 190 needs to be taken apart and and cleaned out first. The case where corrosion is found can be cleaned with  baking soda rub down and rinsed out with water an…

They usually dont. But they are at the age of bad caps so anything is possible

I guess I'm very lucky. The mainboard of my new Plus looks phenomenal. Just a bit of dust. It has 4 MB installed. The caps on the mainboard are of normal axial type: 5x 33uF, 16 V…

Ok, thanks. I still would like to have a complete list of all caps (analogue and digital board) for reference. So far I found one for the analogue board: http://www.jagshouse.com/…

I soldered the connectors on the analog board with some new solder and the flickering stopped. Maybe it will do the trick with your Plus too.

Is there a list of capacitors for replacement available? I searched here and in the web but did not find one. TIA, bobo68

Probably something loose on the analog board.

Sorry for the topic, could not resist.  I just acquired a US Macintosh Plus in nice (outside) condition. It is a 1987 model. It even came with a voltage transformer as it wa…

Hi folks, it's me again! My usual "luck" has brought me a PowerBook 190 in mint condition that was supposed to be working, but actually it isn't. Let me explain. I found this Powe…

oh dear - acid spill - ah well - you might be fixing that for a long time. Have you tried to power it up? - any results based on what I have seen of these acid spills you have a…

The Y1 piezo was killed by the battery acid. Same with D1. Both are replaceable. I removed the battery holder.

I got given three Powerbook Duos today! On the downside, I tested the 2300 and the power adaptor popped and smoke came out..  The same happened with a different adaptor and a 280.…

There are radial caps, may want to change them for good measure.

Ok, so I have managed to find my way back into the apple collecting hobby accidentally. I have since aquired an Apple IIgs that when I turn it on, I get Fatal System Error 0911.…

I hate to tell you pal but your missing more than a pad on C12 there The Y1 crystal is missing along with D1 transistor. The battery holder is also gone............did you remove…

Take out all of the PCI cards you don't absolutely need. Reseat those that you keep. Reseat the RAM. Check all of the SCSI connections and keep connected only what you need. Make…