My 2µF

I was lucky :-)
It seems the guys at Sega just replaced the 470µF capacitors shown in the reference setup for the TDM2822M dual amplifier with 47µF ones. Other people have had problems with these too, so I just pulled them off and put standard 47µF 50V ones in as a replacement. I just had a [...]

robert Electronics., Fix me. computer archaeology, games, good old days, hardware, sega

Last time I turned it on, I didn’t get the usual boot-up sound of ‘Seeeeegaaaaa’.
There’s a little chip next to the earphone plug. I haven’t checked yet, but I suspect it’s some kind of amplifier. So I’ll warm up my good old TEKTRONIX 314 scope and go hunting for some sound waves, hoping the sound [...]

robert Electronics., Fix me. computer archaeology, games, good old days, hardware, sega

Today, while cleaning out documents, I found a some old things and really ‘prehistoric’ ones:

Read closely, 64kb were once enough, even for DOS. Or: “Why is MS-DOS so important :-)”. There’s a PDF with 8 more pages. This seems to be a manual for DOS 3.1, before it was bought up by [...]

robert Electronics. computer archaeology, good old days, hardware, operating systems