So. In my new quests with vintage apple collecting, I seem to have acquired the most homely PB duo one has ever seen. The battery blew up long ago. The front filter on the LCD pane…

Update on the second Classic... took it apart yesterday after my last post, and glaringly obvious are what look to be the two filter caps busted open, which would have explained at…

Don't give up with old batteries. The Portable uses a lead acid battery, which can be exercised, possibly to rejuvenation. Boaters know people who have battery exercisers which can…

The 190/5300 are notorious for having the power connector lose connection with the motherboard. Give that a check as well next time you open it up.  Click to expand... I agree wi…

Duo + 3400 IMO for reasons already discussed.  The two Nubus slots in the Dock would even let you use the Duo as a substitute desktop machine if space gets even tighter.

So, having also bought a new set of 7" long torx bits and a long T-handle after my normal rather too short bit and driver walked away, I decided to take apart my rather nice Classi…

The 190/5300 are notorious for having the power connector lose connection with the motherboard. Give that a check as well next time you open it up.

So  I went to the tip finally to dump my old stripped and unwanted iMac and eMac carcasses and at the bottom of one of the e-waste bins, I happened to find none other than an Apple…

A drill press (or mill) and a 1/32 end mill below the parting line. Replace the battery, then I use beige caulk so if I ever need to get into it again then it's just a razor blade.…

I dont run a pram battery in my 475, I just use the double flip of the power switch method which bypasses that issue.

As james_w in the uk i'll add that I used this battery for mine : http://www.componentshop.co.uk/6v-4-5ah-sealed-lead-acid-battery.html(they also carry a 5ah battery of the same si…

Thanks, I did not know.

oh and what Doug said too... those TDK LC power supplies are known for not working,  they need all the filter caps changed. but in my experience if the psu is no good, the computer…

yeah cap that 650 too.  it needs is. for sure.  the only machines that ( need ) a pram battery is the quadra/LC 475/605 and the Powermac 6100. you will get no video.       Well the…

when i re cell them i always just use this... it works out really great. http://www.ebay.com/itm/UPG-6V-5AH-UB645-Replacement-for-UPS-Battery-for-APC-AP200-/191402741759?pt=LH_Def…

Can you test the voltage?  It's possible the power supply could be going bad and the HDDs aren't getting enough power.

Some years ago I rebuilt several batteries for the Mac Portable, and I found that by using a hack saw at the seam it was fairly easy to cut off the top and remove and replace the g…

Great, thanks for the tips guys, I'll give it another go with your techniques! @BadGoldEagle, gotta keep it cheap for now, so it'll have to be DIY!

Uniserver's method should work pretty well The only thing i'll add is that if you can't get it to crack take a sharp knife and score round the seal and try giving it another go (t…

This is known, has been posted about.

I went to the wiki to look up the procedures to clean up a floppy drive, and I got this: Warning: Invalid argument supplied for foreach() in /usr/local/www/vhosts/wiki.68kmla.o…

Damn.  Recap then.  I suppose I should do my Q650 at the same time - even though it works perfectly. Could a flat battery cause a problem like this too? I will test with the Zip …

I gave the battery to an "expert". He cracked it open and replaced the cells inside. Total cost was high but not unreasonably high, about 60 euros for the batteries plus fit. Kn…

sure maybe you have bad luck.  or maybe you need to recap them... that sounds like a good idea.

@uniserver - Two logic boards, both of which were working a couple of months ago, now display the same fault at the same time?  Is that not a bit of a coincidence?