I got my first FM-TOWNS II, i knew it was not working but i'd like to understand what is wrong and if it could be fixed.
At power-on, after few seconds i got an error message on screen, that i translated in something like "system error, press reset!":
reset1.jpg
some time the screen has some garbage, but same message:
reset2.jpg
I tried to boot from cd, bluescsi2, floppy, but it seems that the FM-TOWNS don't even try to boot.
I already changed the battery, i wonder if it's the SRAM (IC18) or the PROM (IC22) that are faulty and stop the boot routine. I already ordered a new SRAM, while the PROM MB8541p i'm afraid it's not replaceable (it has a label with "03" upon, is public the code programmed in the PROM?)
Any suggestion?
Are schematics available (i didn't find them)?
Thank in advance
I think some of the ram could be faulty
Quote from: Cyothevile on Today at 05:30:30 AMI think some of the ram could be faulty
Thank you for the tips but it was probably the SRAM, i desoldered the old one and placed a compatible SRAM that i used for the X68000 and i got the FM-TOWNS booting some times. Then i desoldered the new SRAM for having the original chip, but i destroyed some pads and without schematics i can't repair it, so used for spares. At least now i've a working Fresh thank to the cd-rom of the donor's FM-TOWNS II.