Where to begin on this one. Longtime DLP member and I'm hoping some of the more experienced folks will have some suggestions so I can get this DL back up, running and over the hump. I've essentially been working on this cab on and very very off for the past 10 years.
Where I'm currently hung up;
Everything is up and connected via Dexter. Hurdle #1; I have no idea if my DL main board is supposed to be using the 7820, the LDV1000, or has the switch to go between the two. I know the Dexter is supposed to autodetect which it should be using, but it seemed to be autodetecting the 7820 when I first dropped it in, and then it seemed to be autodetecting the LDV1000, so
I'm not really sure what it looks at to autodetect, but maybe that was just my unfamiliarity with getting in and out of autodetect mode. (I'm pretty sure its autodetecting the 7820 at this point)
I'm fairly certain the ribbon cable is plugged in in the correct orientation, and the connector is a centronics style. FWIW, I am using the ribbon cable that came with the Hi-Tech board, which I've looped in on some attempts and others not just to see if it makes a difference. I've
removed that for now, to simplify troubleshooting.
*** when I switch this to LV931 mode I DO see a bootup ***
Audio is fine in this mode, and the attract mode starts, and then it begins looping through every scene. I'm pretty sure it does this in LD1430 mode as well. I have some questions on this -- in LV931 mode is the Dexter board communicating with the DL main board at all or is everything coming from the Dexter? I can't be certain that this main board or the ROMS are
100% functional, as its been kicking around for 10+ years. I do know that when I fire it up, the scoreboard does initially light up with an alternating 9/0 pattern. I have no idea if that's normal or not. (screenshot attached)
so I assume the board is getting power OK. I'm just not sure how to determine that the main board is 100% functional... at least then I'd know it's just a matter of getting the config right. Again, not sure what rev of the board this is (screenshot attached) and so I can't be sure the
jumpers are correct. Considering the price people are selling untested main boards for on eBay these days, I'd rather not drop $550 if I can help it.
I'm not sure if there's anything I can do in the way of more testing to determine if the board is bad or misconfigured. If anyone notices anything obvious, or thinks or something else I can test, I'd be eternally grateful. I put more quarters into this thing in my lifetime than I care to count... I just want to finally get this thing up and running once and for all.
Thanks!!
Dan
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