First post, by Deksor
- Rank
- l33t
I've bought this RTC + floppy controller card recently. At first it made the PSU unable to start. Since this was the sign of a short circuit that I already had with the HDD of the same machine, I started to check continuity on some of the components of the card. I found out that two of these components had a resistance of 0 ohm in both ways while the third one had whatever resistance in one way and infinity in the other. I desoldered the two ones that seemed to be dead and then the computer started up normally. The floppy drive was working, indicating that at least half of the card is still functionnal. However I checked voltage on the holes where the battery was probably soldered before (the previous owner apparently took care of removing an awful battery there, thanks to him !) but it was something like 0.1v so nothing that could charge a battery to hold time. But then I saw that the components I desoldered were connected to the battery circuit.
So the question is in the title : what are these components ? Capacitors ? if I'm correct, then what are their specs ? the only things written on them is "+25" with a "k" between two bars and on the other side is written "106M"
Trying to identify old hardware ? Visit The retro web - Project's thread The Retro Web project - a stason.org/TH99 alternative