128k help

[16timesaweek]

i recently acquired an awesome 128k 1984 macintosh in great condition with keyboard + mouse

The unit does not power up however, and i was wondering if this could be the result of the battery in the back being totally corroded as well as the contacts.

I have found a local place where can i order a replacement battery for $20 - should i go for it or will the problem probably be something else?

thanks MLA -!! :?:

 

[Charlieman]

The battery is not essential to boot any original compact. How badly corroded is the battery enclosure? Serious leakage may have damaged the adjacent analogue board and power supply.

Most of the previous discussions here have addressed "wonky but working" analogue boards and power supplies, and I recommend that you take a look at previous threads about faulty video, intermittent restarts etc. They won't help you to diagnose the problem, but will give you an indication of the type/scale of repair that will be required.

Anyway, welcome to 68KMLA, and good luck.

 

[tomlee59]

If there truly is no sign of life at all -- no sounds of any kind, for instance -- then a fried power supply is likely. In your case, with a badly corroded battery, there is a chance that the on/off switch has suffered corrosion as well. With the unit unplugged, try rocking the switch back and forth some number of times -- that might clean off the contacts enough to get something to happen.

In any case, opening it up and having a look around will be highly revealing, and almost certainly necessary.

 

[16timesaweek]

:I

ok so i can get the three torque screws open on the bottom end of the case, but the two hidden underneath handle are a bitch to get to... actually got my torque bit stuck in there... any suggestions on how to get those last two screws?

thanks

 

[porter]

any suggestions on how to get those last two screws?

I removed the handle from my torx screwdriver to do those two.

 

[equill]

i recently acquired an awesome 128k 1984 macintosh in great condition with keyboard + mouse ...

If you are not using a Torx-15 driver with at least an 8" shaft, STOP and get one, lest the statement above cease to be true. Having done that, see this before you attempt to crack the case.

Good catch, and best of luck in sorting the Mac out.

de