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have assembled a number of blue scsi's and tested om SE/30 and LCIII with different HD image files. Works great. Only problem I had was when I got some fake STM32's which would only work at a very low speed. I sent the fake STM32's back.

Both should work, depending on the other scsi devices on the chain. boot indeed works in reverse order from the supported systems in the documentation: SE SE's generally work though a small number of users have reported that some NCR chipsets may not work in the SE. What is the problem with...

maybe you are focussing on the wrong part of the board, the LC III will start without battery, the capacitors you replaced ( C2, C4, C5, C7, C8, C13, C18, C19, C20, C21, C22) , FPU, RAM simm and VRAM extension could you test the board without battery, FPU, RAM simm, VRAM extension could you...

just recapped my LC III and noticed this, the production of the LC III has C22 reversed, see the bomarc schematic when installed as factory, I get -2.8V, reversed as in the schematic (and as intended) -5V see also...

or use the bluescsi DB25 version

the -2V is probably because C22 has the wrong orientation, the silkscreen on he board is incorrect. if you rotate C22 you will have -5V

https://68kmla.org/bb/index.php?threads/240v-power-circuit.38381/post-415244

flup flup can have multiple causes. Could you add a picture of the flyback ? can check if I have a flyback to test or assist in troubleshooting (location NL)

the LAG is a PAL 16R8 if you can find the code for the PAL (or reverse engineer the source code) you can create a new LAG ic maybe you can solve the puzzle in the following link: http://archive.retro.co.za/mirrors/homepage.ntlworld.com/kryten_droid/AppleMac/unitron1.png...

The 4700pF I use are for the international 220V version. Don't know if there is a difference for the 110V version.

check/replace UE8 and the connections to it

Did you check continuity between internal, external connector and floppy controller? The only pin different between internal and external connector is the enable (ENBL1 / ENBL2)

I'm in The Netherlands, most analog boards are 230v international C33 and c36 are the ones in the smaller red circles

some faults I encountered reparing 512k's solder connections J1, J2, J3 always replace C33 and C36 check Q2 BU406 check CR15 and CR17 1N4575 (can be replaced with BZX79-C6V2) check resistor values (replace if not to spec) R55 33K R53 1.2 ohm 0.5W R54 15 ohm check CR5 (can ve replaced with...

the only thing I could find is on the same site https://appleclub.pl/index.php/en/2018/03/21/macintosh-se30-prograph-se3/ the connector on the solder side goes to the 9 pin connector on the back of the SE

Picked up an SE with this card installed, the hd is not present in the SE, I guess it is a display card, but where can I find a driver?

had a similar problem but a different solution the power supply would not start after the recap, only sometimes, when working it remained working. But next day (a cold start) t would not power on. Problem appeared to be cap goo under the diodes and resistor next to the shunt regulator. The...

Does anyone know which NIC this is and where I can find the driver disk? LC PDS P/N 110-00014-100 VER 1.3

the green is the ground wire which in your case is connected directly

are the 27c4000 eproms  and the CC2 ROMs pin compatible? If so maybe you could burn a set of 27c4000 eproms with the CC2 ROM LO and HI