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 …
In the previous part on the Toshiba T1600 Power supply board I talked about how I traced the board and identified some of the mistery components on it. I also showed my repair efforts on the T1600/40’s PSU and how it required minimal effort to fix. As stated at the end of the previous part, …
In my last post about the Toshiba T1600 I took a first look at the machine and explained my first troubleshooting steps towards fixing the power supply (PSU) board.This post will go a bit further in-depth on the PSU, in on of the next posts I’ll explain a bit on how it works. This series …
And more PSU debugging Back in October I acquired a Toshiba T1600 for very little money.It didn’t look all that great from the advertisers pictures and was, as most of these late 80’s/early 90’s Toshiba laptops, sold as not working but I thought I’d take my chances with it.I really like the funky nature of …
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 …
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 thought it was time I posted another T1000LE update because (quite obviously) everything went not as planned.I really wanted to get the video done by now but editing is a lot of work and since the December festivities start early here in The Netherlands I didn’t have all the spare time I wanted.My aim …
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 …
This is just a quick post as I haven’t made one in quite a while, and for a change it’s not about OBD2 or ELM327 stuff, but rather about some of my Vintage Toshiba laptops. I recently acquired a vintage Toshiba T1000LE laptop which has, as the seller told me, “possibly power supply issues”. Basically, …