double checking stuff and for the resistors i found these odd's: Ruud's schematic lists R5 as 1.5 Kohm but the BOM in the service manual says 560 ohm R8 is a 1Kohm but BOM says 390 Ohm R10 is a 100 ohm but on BOM its a 120 ohm R31 is a 1Kohm but BOM says 180 ohm R37 is a 47Kohm but on BOM its 2,7Kohm R46 is on BOM but not on Ruud's schematic The following is on Ruud's schematic but not on BOM: R42, R36, R50, R48, R49 will go on and recheck capacitors 2017-02-14 20:58 GMT+01:00 Bo Herrmannsen <bo.herrmannsen@gmail.com>: > > - there are a few BOM's in the service manual at zimmers, i used the > first one but maybe that is not the right one? > > I can answer this one myself... the schematic has only the 5 pin video so > its the first one board in the service manual. PCB 326298-01 Schematic > 326106 > > 2017-02-14 20:35 GMT+01:00 Bo Herrmannsen <bo.herrmannsen@gmail.com>: > >> a bit back to the org subject >> >> BOM: https://docs.google.com/spreadsheets/d/1Gl0Q71u6fKLPRA9HQiSG >> 8-xY8tPweMwXuy_UGQ1Iayo/edit?usp=sharing >> Schematic: http://www.baltissen.org/images/c64.png >> >> Best photo of a board so far: http://myoldcomputer.nl/w >> p-content/uploads/2015/11/board-326298.jpg >> >> I have got most of the discrete stuff sourced, thou i have a few >> capcacitors i could not figure >> >> Q's: >> >> >> - is mica and ceramic the same thing? i ask because i could not find >> a few of the ceramics but could find them as mica's >> - C106 is not on the BOM on page 22 in this PDF: >> http://www.zimmers.net/anonftp/pub/cbm/schematics/compu >> ters/c64/servicemanuals/C64_Service_Manual_314001-02_(1985_Feb)%20.pdf >> <http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/c64/servicemanuals/C64_Service_Manual_314001-02_(1985_Feb)%20.pdf> >> - but on the scematic on page 26 it is marked as 150pf but with a >> dashed box arround it. I looked at the board i just linked and could not >> find it anywhere. But can i assume that its just a ceramic? >> - The socket for the expansion port is also a no go so far, anyone >> know a shop that has them regular? >> - L4 is listed as a line filter of some sorts, but could not find any >> more info so far, anyone knows more about it? >> - RP4 anyone know what kind it is? BOM at the zimmers link says 10 >> pin so can it be assumed that its 5 individual resistors? >> >> Things noted on the schematic from Ruud >> >> >> - Only one of the resistors in RP4 is connected on both sides, do i >> miss something here? >> - Same for RP3 >> - there are a few BOM's in the service manual at zimmers, i used the >> first one but maybe that is not the right one? >> >> >> Will do the chips tomorrow, rest of evening will be spent double checking >> and look a bit more in the service manual >> >> >> 2017-02-14 8:29 GMT+01:00 Julian Perry <jp@digitaltapestries.com>: >> >>> Hello GJPAA, >>> >>> Tuesday, February 14, 2017, 6:01:26 PM, you wrote: >>> >>> >>> >>> >>> >>> >>> >>> >>> *> Hallo Bo, >> First of all i wonder what board rev matches this >>> schematic? > I have no idea. The source is the schematic in the well known >>> Programmers Reference Guide. *As Hans has mentioned, it looks very, >>> very close to Rev 250407. Nothing was ever absolute with Commodore boards, >>> but I think that's as close as you'll get. Commodore were always tinkering >>> with the analog video and audio (particularly early on) so there may be >>> some differences there. >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> *>> and if there are a high res scan "out there" i could use for initial >>> component placement > Write me in private and I will generate a PNG with an >>> higher > resolution. Or you can have the original files. Eagle can be > >>> downloaded and you can create your PNG. And you can tinker with the SCH >>> yourself. >> Next would part are ABSOLUTE not to be found no where? > These >>> parts aren't that rare. Just ask around. >> and board layout > Hasn't that >>> be done already? Several people have asked for the SCH before. *There >>> was the C64 reloaded a short while back ( http://wiki.icomp.de/wiki/C64_ >>> reloaded ). Aside from cleaner video output I didn't quite see the >>> point: but it's always nice to see the C64 candle burning bright !! >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> *> Hmmm, next thought: what about using the ATX format? >> Next, how >>> much use would the work be in general? > Depends on your skills and >>> experience. > Met vriendelijke groet / With kind regards, > Ruud Baltissen *> >>> www.Baltissen.org <http://www.Baltissen.org> >>> <jp@digitaltapestries.com> >>> Message was sent through the cbm-hackers mailing list >> >> >> > Message was sent through the cbm-hackers mailing listReceived on 2017-02-14 21:00:02
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