My buddy's got my Lethal Weapon at his "up north" cottage for the summer, and its giving him some problems. He's done some initial troubleshooting, with no luck. Trouble is, neither of us are actually by the machine right now. We want to get it running when we're both up there over Labor Day, so I'm looking for things to look for, parts to have ready, or any other advice you can come up with.
Here's what we know:
- sound board started acting funny first, like it was resetting in the middle of a game, then the sound stopped working altogether
- next, it started resetting completely mid-game
- now, he tells me that the board will boot up at first, then just die, doing nothing
- he measured some voltages, and found that the +5V is only at 4.65V, so were thinking that's likely the problem
- he disconnected everything from the power board, and it was still 4.65 at the power supply with nothing connected
- I replaced that little electrolytic cap at the corner of the big heat sink within the last year
- he took the power board home for a bit, but with no machine to put it in, his options were limited. He replaced C1, C2 & C3 on the power board on a whim. When he got back to the cottage, no luck.
So, when we're both up there for Labor Day, I'd like help with a plan.
Anything else I should look at?
What parts should I have on hand?
How can I check the voltage regulator (I don't fully understand that circuit)?
I know these Data East machines are basically clones of Sys 11. If I have a Sys 11 power board (Cyclone, Pinbot), can those be dropped in for a test?
Anything you can share would be appreciated.
Thanks,
Jeff