Recent content by mark0x01

I'm not familiar with this model, but does it have a setup menu? Possibly, being a terminal, typed characters would not be seen locally unless it is configured with local echo on.

If you don't need to reuse the ic, I usually chop off the legs as close to the ic body as you can, and then heat and lift the pin out with a bit of help from a fine flatblade screwdriver pressing it to the iron tip.

The product's lifetime is as long as they want it to be, so maybe 2 years after the next version. My Windows 2.11 PC still has a valid license, the Windows 10 laptop, not so much. 11 won't install on any hardware i have. Life was easier with 95, just put in a few random digits for the license...

For best resuts, i'd suggest to pick an ancient verson within about 5 years of the computers age. Even the 32bit versions are now gone or disappearing fast.

The ac filter is what you have shown, and is easily tested with a meter. High resistance across the line and load ends. Also check the power supply RIFA caps. To find it, follow the cables attached to the load end of the filter.

Reliability fades with age (homo sapiens included), so only really useful on unused or very recent stuff that is worth the effort.

Been a very long time since my audio repair days so I might be a bit rusty..... The bar across the front latches the mechanism for each different function (PLAY, FF, REW), and is released by the STOP function (or possibly a different function) Check when play is pressed that it latches...

They could always be given a second chance at life and become a static museum exhibit. Mine served as a useful serial terminal. It rorked very well with having a real rs232 port and being smaller than a laptop.

Saw this thread and decided to check my 100CT. It has the same problem with the RTC battery. There is corrosion in and around the pcb battery connector, and it also travelled to the other side of the pcb. Looks like the gas given off is corrosive, as no sign of anything in the plastic box the...

From memory, the 15ohms is good. You could eliminate the keyboard by emulating a key - a substitute key + resistor in series across the right pins at the cpu maybe?

Looks similar to some of the cheaper PC and laptop keyboards. The white coating masks over/insulates the conductive black traces. The conductive coating can deteriorate over time. Try metering from the edge connector to the pads and see what the resistance is. When a key is pressed, there is...

You could try these load values on page 6 of the attached manual as a guide. It also has some waveforms.

Your version of the diagram matches my board, so is "as built". The origional drawing is the same in that area as the AA12090 drawing and a few others I checked like the BBC B & B+. My Astec board has AA 11951 , 100078-02-REV and Dated 8314, so it could also be a design change by Astec if some...

Just imagine in another 50 years, when today's computers are considered vintage, and you won't be able to install any Windows version on them. There were a few things that triggered the change, and I'm pretty sure hard disk was one of them. I don't know of any "supported" way to avoid WGA...

I can confirm that the drawing doesn't match to my pcb. From a DC point of view it probably makes no difference. My C9 was only rated at 85c and quite toasted, being so close to the heatsink, but tested as 288uf, so still functional.