Commodore 1084S-P1 repair

This time around we’re repairing a Commodore 1084S-P1 monitor (originally made by Philips). For those wondering about the doubled up insulator on the heatsink – I checked after running the monitor for 30+ minutes and the heatsink was the same temperature as the transistor (approx 35 degrees C), so the thermal conductivity doesn’t appear to be compromised.

March 31, 2022 · 1 min · 57 words · TassieBob

Vectorio part 3 – reassembly

This time around I put the Vectorio back together. There’s no real surprises here – it all bolts back together about the way you’d expect. Next time around I hope to have a working composite monitor that I can plug into it (my modern Sony LCD workshop TV doesn’t like the composite output from many retro machines).

March 25, 2022 · 1 min · 57 words · TassieBob

Macray CCTV switcher 'thing'

Another tip shop find – this time a Macray CCTV switcher thing. Not entirely sure what this is supposed to do, other than switch video in a CCTV system. It’s pretty basic, with a PSU and a bunch of relay boards. I bought it for the Euro card enclosure.

March 17, 2022 · 1 min · 49 words · TassieBob

Apple IIc 9 inch mono monitor repair - part 1

This time around we take a look at a monochrome 9″ Apple ][ monitor, and make a start on rectifying its issues. This will be part 1 of at least 2 as I’m still waiting on some of the replacement parts to arrive (some I had in stock, but many I didn’t). You’ll see what a PITA this thing is to get apart, and next time I expect you’ll see what a PITA it is to put back together!...

March 10, 2022 · 1 min · 79 words · TassieBob

PACOM 3170 video surveillance 'thing'

Another tip shop find – this time a PACOM 3170 video “thing”. I realised after I made the video that the identification overlay that I think this produces would require a video source to generate that, and the video cards don’t have that, and it’s unlikely the microprocessor is bit-banging the video. BUT, I missed the obvious – there’s provision for a daughtercard on each video card, with pins labelled “VSYNC, HSYNC, ID VIDEO” amongst others on one side, and the other side has serial in/out, ID0-3 pins (device select?...

March 3, 2022 · 1 min · 124 words · TassieBob

Vectorio Apple ][+ clone keyboard

In this video I clean and re-assemble the Vectorio keyboard that I took apart quite some time ago. In doing so I noticed another area where this machine differs from the genuine Apple ][+, so I explore that a little before giving the keyboard a test. AND IT DIDN’T WORK PROPERLY! But it wasn’t a huge issue, and the fix was pretty straightforward if not slightly fiddly.

February 24, 2022 · 1 min · 67 words · TassieBob

Vectorio Apple II clone

A while back now I picked up an Apple II clone on eBay – listed as “unknown condition – parts only”, or words to that effect. Back then I popped it open, checked the power supply for obvious issues, checked the output voltages, and was able to successfully power up the machine. BUT, the machine was a bit of a mess – the case is very yellowed for one, and it needed a good overall clean....

February 3, 2022 · 1 min · 203 words · TassieBob

SVI-328 part 2 – cassette storage

In this video we’ll have a look at the cassette system of the Spectravideo 328. How it connects to the system, a look inside the SV-903, and a quick look at some cassette based software. Note: I didn’t mention it in the video, but there are virtual tape solutions available for the SVI-328 – links below. Details of the Spectravideo tape format SVI-CAS owners manual link: The manual has recent pricing for the unit & SVI cable....

January 27, 2022 · 1 min · 88 words · TassieBob

Logitech X540 speaker fault diagnosis

This set of Logitech X540 speakers were plugged into our bedroom TV to make it sound half decent. Most people seem to use those sleek sound bars, but I had this set of speakers sitting idle and for nearly 10 years they’ve done the job just fine. Until the other night when I turned them on and… Nothing. Nada. Zilch. So in this video I break them open to see what the problem is, and whether I have the parts required to fix them lying around....

January 20, 2022 · 1 min · 86 words · TassieBob

Spectravideo SVI-328 part 1

In this video I unboxed a Spectravideo SV-328, an 8-bit computer from Spectravideo that was introduced to the world in 1983. I’ve never owned, or even used, one of these machines so this was interesting. I picked this lot up from the local tip shop – yup, someone was literally throwing this out! In part 1 of this series, I take a look at it, plug it in, and check if it works....

January 13, 2022 · 1 min · 121 words · TassieBob