sega katana HKT-120 help

[raylyd]

heres my pictures of my GD-ROM board from my dev kit
the board did have dry jonits i did use flux to re do this board
any help would be good
:crying::crying::crying:







:cur_sonic::crying::crying:

[Dreamcast]

You need to let us know what's not working for us to know what to suggest.

[l_oliveira]

The connector for the optical pickup flexible cable look like has been reworked before. Maybe you want to check if it has short circuits.

And a special attention to the ATAPI/DSP chip (the OAK Technologies OTI92) pins.

Check if any of them got loose. Solders do crack after some time, especially if the unit operates hot internally.

[raylyd]

i will check it out

[raylyd]

all checked and fine but still not working

[l_oliveira]

Like I mentioned earlier, you could try to re-heat or ressolder the pins on the DSP/Interface chip. (the big and flat chip) Also the CPU of the drive (the chip with the sticker)


Would help if you gave us a exact and detailed explanation of what the board does/not does ... :)

[Dreamcast]

And if you have more than one HKT-01, have you tried using its GD-ROM board to prove that the GD-ROM board is faulty and not the other boards that interface with it?

> Does the disc spin up at all when the door is closed?
> Are you sure you have the correct firmware installed and the unit is in GD-ROM mode?

[raylyd]

the discs spin up and trys to read i have tryed a good gd-rom board from a mates dev box and the kit works and yes its in gd-rom mode but i will try a reflow on the drive cpu

[l_oliveira]

the discs spin up and trys to read i have tryed a good gd-rom board from a mates dev box and the kit works and yes its in gd-rom mode but i will try a reflow on the drive cpu

If we had the datasheet or other information regarding the drive (the drive CPU is the small square chip with the sticker on top. The sticker has the firmware revision written to it... ) we could have a better idea of what part of the board to focus the diagnosis at.

[raylyd]

hi just tryed to reflow again and the one pin is broken on the chip
i think it would just be better to repalce it or i should just get other dev box
i would be willing to send this board to anyone if they think they can fix it
would be a great help
:crying::crying::crying::crying::crying::crying::c rying::crying::crying::crying::crying::crying:

[Dreamcast]

Did the board ever work? How did the pin break (was it before or after the reflow?)? This thread should offer some assistance.

[raylyd]

what knida of tool would i need to do this thanks or could i send it to some one how has done this thanks

[VitAmen]

hey some time ago i sold some devbox parts to a member, i think it was turbografx. I think this board was included as well...try locating him...

[raylyd]

i cant find turbografx member help me please
:crying::crying::crying::crying::crying::crying::c rying::crying:

re: vitAmen
hey some time ago i sold some devbox parts to a member, i think it was turbografx. I think this board was included as well...try locating him...

[l_oliveira]

I'm a bit far (Brazil) and shipping bites but if you want to try to let me have a look you may PM me...

[raylyd]

l_Oliveira i have sent the gd-board now with tracking let me know when you get it thanks mate

[l_oliveira]

l_Oliveira i have sent the gd-board now with tracking let me know when you get it thanks mate

Alright. I'm only worried about what have broke when you said you broke some pins of it. :rolleyes:

I'll see what I can do about that once I receive it here.

Edit: I have several scraps of Dreamcast hardware so I have the OPTI chip. I don't have the microcontroller chip from a devkit though (the smaller chip with the sticker) as the boards I have here all came from retail units.

[raylyd]

ok the one pin is broken and two traces but easy spotable to relink them back up with wire i will pm you soon as find the tracking number i have here someware