As promised in my previous post this post will go in-depth on the internals of the T1600 PSU.Most of my work was done using the FIVPS2 revision of the board but most of it applies to the FIVPS3 and FIVPS4 revisions as well. There are only minor changes, a couple of the dual capacitors (the …
Today’s post is about debugging the T1000LE machines, specifically their power supplies.As I had to wait for some stuff to arrive for my mouldy Commodore 64 I had some time to dig deeper into the mystery that is the T1000LE’s PSU circuitry.And I went in, deep. I also posted to the Vintage Computer Federation forums …
Last weekend I picked up a boxed Commodore 64, including (boxed) 1541 diskdrive, datasette and “The Arcade joystick” as well as a (non-boxed) printer. The video below is part 1 in my mini-series on this machine.Part 2 will become available next week so be sure to subscribe and join me while we fix up and …
IDE drives, also known as PATA drives are a dying breed.Being superseded by SATA and M.2 this long-standing standard for hard drive interfaces has been discontinued for years now. This poses a problem for vintage computer enthusiasts like myself as these drives are no longer being manufactured and the existing ones are starting to show …
After my post yesterday I did some further testing on both machines.My suspicions were confirmed by desoldering and testing Q502, it was shorted out on both machines. Stranger things As this 2SJ182 is a Power MOSFET capable of handling -600V drain-to-source, 15V gate-to-source and around 1 amp of peak current (as shown in the datasheet) something …
I finally got around to fixing the T1800 laptop I’ve owned for the last couple of years.This is a project that has been shelved for a long time as I thought it had a BIOS defect which tuner out to be a harddrive (and floppy, I’ll get back to that later) issue. I posted a …
The new capacitors for the Toshiba T1000LE I talked about in my last post were delivered this weekend. I really was hoping to make some good progress, but of course I ran in to some troubles. The first problem being that unfortunately two of the capacitors are in backorder. They will take two(!) weeks to …