Sega Turbo Help

micksimmonds

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Donor 4 years: 2011, 2013-2015
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Okay just got a Sega Turbo, anyway had a switcher in the base of cabinet, but the output voltage of the switcher was low regardless of adjustment, put in a new switcher that was outputting 5v dead on, anyway now fire the game up and get this? whats the next step ? anyone can help?

video here :
http://www.youtube.com/watch?v=NwYMHhJS-_g

Thanks and any help would be much apprecaited
 
okay pulled off the socketed chips and cleaned and reseated those, removed all cables and reseated those, got 2 red lights on top board (with metal plate) and 1 red light on board underneath, but still same thing as posted video of, going to try leaving it on as read a few other people had to wait like 30 minutes for game to come up? all voltages going into the main board seem good, all around 5v and just a little over 12v, so thats good? whats the next step? anyone can help me please
 
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I have removed every chip that can be removed (ones in sockets) on each board and still sadly changes nothing from the original video, cleaned, reseated every chip possible, to no avail :(
thanks for the post thou :)
 
is this game playing, but not showing things or is it just not playing at all and is locked up?
 
it just does whats on the video, no game play, that single screen and noises even after reseating all chips, connectors, and voltage is good going into board
 
I think my Turbo cabaret may be doing the same thing, although I didn't have a monitor hooked up yet but it was making that kind of noise, I'm very anxious to see how you fix this! Mine has the original power supply which I rebuilt then tested and it has all the correct voltages.
 
yeah hopefully got a friend coming over at weekend that can read the schematics better than me and maybe make some headway? (he is far more techy than me!)
heres hoping!?!?!?!??!
 
Mine is doing something similar.

I have the cockpit version... and the screen is completely scrambled, as is the LED display.

The LED display pulses slightly.

It was working properly, Occasionally it would do this, but a quick reboot would fix it... now it does this every time. My siren sound fades out though.

At first I thought it was a volstage issue. I adjusting voltage lower or higher only makes the siren noise shorter or longer though.

I haven't done much troubleshooting past this. I'm lucky as I have a working board waiting in the wings if thats the problem.
 
these games seem very unreliable :( how ever did they survive in the arcades or they didnt? wish knew what the next step is after reseating and checking voltages, dying to play this game
 
these games seem very unreliable :( how ever did they survive in the arcades or they didnt? wish knew what the next step is after reseating and checking voltages, dying to play this game

Sounds to me since it is locked completely, that they cpu may not be starting up. Maybe try a new one in there. Just cause a bad chip has clean legs, doesn't mean it's going to work.
 
okay is the big one under metal plate the cpu? and can you replace that with the same even thou it wont have that metal plate? what is the part number of the cpu? thanks
 
I think I've heard somewhere that Turbo used some kind of custom main processor as a means of copy protection, but it could be replaced with a Z80 if you used decrypted ROMS.
 
well I now picked up a caberet Turbo that is working, has a few graphical glitches but plays good :) so will use that to test other cabinet and boards, and if you can send that file will try that as well, but once I get other cabinet tested, decided gonna keep the caberet, wifes prefers that one! so other has to go :(
 
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