To get the system up and running i I just drilled the Dallas-Chip and soldered an external coin cell holder to the chip. I don't know if that's simple, because D3-D5 seem to have different connections to the Dallas Chip. During tracing i found f.e. that even the plus pin on the battery header is …

Ok, i traced the external battery pins to the dallas chip and they make no sense. VCC is connected to Ground and some other pins don't add up either. I guess TheMobrules is right - there are probably more components missing or the header is for another variant of the board. I guess i don't want to …

I checked it - Pin 3 & 4 are GND and Pin 1 is +, as mentioned in the manual and by Nexxen. There seems to be no charging current. I'm still not sure about the voltage though. I've had 286 systems which needed 6V to hold CMOS settings, but all of them had some diodes beside the ext. battery pin …

Alright. Thanks for your trouble anyway. Good to have some "retro preservers" out there! 😀

Hi SDumas, that's awesome! The manual is a great source of information for some basic steps working with the Philips PC. It seems to be some kind of quick start guide. PS: You don't have any other information oder documentation regarding this PC by any chance? There are stille some unanswered …

Hi guys, i recently got a a Philips P3202 Pc and i'm trying to bring it back to live! :) pc.JPG Thanks to SDumas (see https://www.vogons.org/viewtopic.php?p=1220229#p1220229 ) we have the "Inside your P3202" manual which is a great start for working with the machine. Sadly there is no part …

Hi SDumas, you mentioned Philips P3202 manual in a post from january. I recently got one of this machines and i'm looking for documentation of it. So it's no surprise that i'ld love to see the mentioned manual online. No pressure or anything, just a quick reminder that there are people out there, …

Guys - i can't believe it. I finally got it working... Thanks to @cuttoon for giving me the cruicial hint. In fact, the pinout i used was wrong. After some more tries i finally got it working: P1240759.JPG I used Pin 5, 4 and 3 of the DB9 and had to switch pin 5 and 4 on the side of the din plug. To …

Small update: I tried changing some chips to no avail... I guess without Cuttoon's help i'm not going to solve this mystery. Sadly i can't write him a PM to ask him kindly for help, because i'm quite new to Vogons... Could maybe someone give him a hint, to look at this thread? I know it's an odd …

Meanwhile i built the cable with pin layout mentioned above and borrowed an MT-32 to test the card, but sadly without success... No audio output and no sign on MT-32 display that it gets a signal... :( Does anyone maybe have this card and confirm the pin layout for the cable? Maybe i'm missing …

Hi dear retro sound geeks! ;) I recently found this MPU-401 card in an old PC of mine: P1240451.JPG P1240452.JPG It's missing the breakout cable and i tried to construct one with information provided here https://www.vogons.org/viewtopic.php?p=828295#p828295 and here https://www.vogons.org/viewtopic …

Sorry for digging up the old thread, but i recently got a "CMS-401 II" card and i'm trying to make a breakout calbe for it. First of all - thanks for the great collection of data (pictures, manual, etc.) of the card! :) I'm struggling a little bit with the pinout for the cable... @Cuttoon: Could you …

Sounds interesting, maybe i'll have a look at this in the future. Yesterday i found an older vga flatscreen monitor to test the pc. Can't really tell you how happy i am to see the little olivetti back in business! ;) P1240396.JPG Now i'm waiting for an XTIDE-ROM to try to get a slightly bigger hard …

Probably a bit off topic, but at the moment i only have this monochrome brother ct-1050 monitor, which i'ld like to use, to test the pcs 286. As mentioned here https://archive.org/details/Olivetti-PCS-286-Headland , the olivetti pc shoud support monochrome monitors but sadly mine doesn't have a D- …

I fixed the broken joints on the transistor and now i get a clean 12v signal on the red lane - very nice! I'm still getting +5V on the white lane, but i assume that's ok as mentioned https://www.vogons.org/viewtopic.php?f=46&t=65695&p=744453#p744453 . Curiously i'm getting -5V on the pin, which has …

You're right! Those joints look definitely broken! Unbelievable... I checked the whole psu, but somehow never noticed the broken joints... 😒 I'll fix them and post an update tomorrow, wife ist calling ^^

Hi bogdan, that's interesting! I always assumed there's an error in the input section of the psu, but i guess you're right - a problem in the output section makes more sense! Here are some pictures of my psu: Filename P1240172.JPG File size 360.32 KiB Views 368 views Filename P1240176.JPG File size …

Hi guys, sorry for digging up the old thread, but i guess my problem is quite similar... I'm trying to resurrect an Olivetti PCS 286 machine at the moment and the power supply stands in my way. The fuse was blown, i already changed the two Rifa/ Kemet 0.47 Uf caps and put in a new fuse. At least …