Inconsistent booting is usually an issue with the PSU in my experience too.
Those old Model 3 power supplies are known for failing like this, mine used to be worse if it was a bit cold.
You can fit one of the newer Sun power supplies (from more modern JVS drivers, Naomi cabs etc.).. there is...
Bummer, they are big items to ship and need to be packed well to avoid breakages, but $200 seems a crazy amount within the US!
I have one spare, but I'm in the UK and shipping/taxes would be even more from here! Hope you find an alternative option soon.
You may have already seen this, but it looks in decent shape aside from the sticker..
https://www.ebay.com/itm/374910197352?itmmeta=01JFQ7214T8KA9EYM9S86KF7CE&hash=item574a639e68:g:kr4AAOSwb2xk8MQp
If there's no light on the power supply then it's either faulty, or there is a problem with the 100VAC supply to it. Check connectors.
There is 100VAC in the cab as the fans and monitor will run off that. The drive boards should have lights on too.
Old Model 3 power supplies can be dodgy but...
It's not as difficult as it might look. Open up the metal cage and locate the communication board on the top part of the stack.. the long thin one that's not in the photo linked to above (because that stack doesn't have one).
In the photo you'll see the security board.. the small square one...
Nice cab, I've never played one of these later versions though. Shame the cushions are missing on yours.
The cushions I have here are pretty good quality, thicker than the regular Model 3 style cushions so should be more comfy to sit on.
I have two sets only and was hoping to keep at least...
They do look pretty good, but I don't have a cab near me to compare quality. The nearest sited cabs are a long way from my house :(
They may need a trim and will need some adhesive, but you're welcome to try them if you like.
What cab/cabs do you have and do you have any cushions on it/them now?
Ken is well known in the industry and is a master at repairing most Sega boards of this era. I too have numerous faulty Step 2 video boards and have been meaning to get them looked at for ages. Not sure how shipping/taxes would work from UK/EU -> USA and vice versa? Tax should be void surely as...
I don't have a part number in my original Japanese manual either. Sometimes the cushion is only available as a spare as part of the seat base or back assembly itself on later drivers that I've seen.
I may be able to help but I don't have an iD4 8 cab to check fitment. I thought these cabs had...