Recent content by Byrd

When you boot off the Classic ROM OS (hold down command + option + X + O on startup), does it happen then? If suspect RAM, pull and clean the slots and contacts again, there are software tests like MacTest, Techtool but not neither are particularly rigorous in testing RAM.

Honestly, you've done everything that needs to be done. Is there any damage on the backside of the board - around the mains voltage section? Have you deep cleaned the board in and around larger components where cap goo can leak down (in Classic AB it was extreme - like honey).

Upload to Macintosh Garden, thanks! One of the best music/playback programs for Classic OS.

Bad RAM. There really isn’t much that can go wrong/make a Mac Plus crash apart from RAM and low voltage, while there check for any dry solder joints on the AB.

Definitely not spam! Probably the best vintage Mac "show off" software that exists. Were you reading my mind? MacFlim was something I was just going to try on a Mac Plus just built with a Micromac Performer card and configuring software on it next :D

CRT rejuvenators = most useful as a last resort for coarse pitch CRTs as used in high hour arcade monitors, would say PC monitors would be a no go due to finer pitch and sensitivity. I've got this 14" cocktail arcade with a sharp CRT image, but it dims big time with bright images; was used in a...

It it is a CRT with thousands of hours and has slowly gotten worse - the tube is dying a slow and predictable death. It may also be evident when you display a bright white image - if the screen dims even more then doing this, that's another sign of wear. CRT rejuvenation is like rebuilding a...

My go to tester has been a 486 motherboard! It POSTS quickly and you can run Memtest on it

If you’re in between a fair bit of it, maybe a nicely done steak

The paint matches the G4 casing - a close match to repaint would be a cool off white. In Australia a common roof colour is "Surfmist" in Colorbond steel, and a close match IMO if looking for spray paint.

Got it - leg chopping time it is :D

Hi, resurrecting a very old thread, but was mine from 2016! I'm replacing a 16 x 4164 RAM chips in this very 128K board, where two chips replaced above some years ago, now more chips are failing so going to replace the lot with sockets and NOS 4164 ICs. Could I please ask for advice regarding...

The third-party RAM upgrades for early Macs were often precariously placed in sockets, with wiring going to random points so have a look inside and see - check wiring all in place and see if the RAM upgrade can be potentially be reseated and contacts cleaned. I'm currently restoring a couple of...

Try the basics, you've got the small CUDA/SMU reset switch on the motherboard, also replace CR2032 battery, reset PRAM and NVRAM (via Open Firmware). There is also the Apple Hardware Test CD to diagnose and test things in further detail. I'd also remove the KVM during this time as they are...

Any brand name “high performance” SD card will do you will never fill 1GB let alone 32GB but find it good having a larger card to fit and try various OS installs etc.