Sega Turbo Restoration

JAZ

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First post in KLOV, have mostly been restoring pinballs until now.

Just picked up a Sega Turbo (good price but as is) and after looking the power supply and board over I plugged her in and to my surprise it powers up and I get the following.

brief ambulance sound that fades out (normal for bootup?)
monitor comes up but is very jumbled.

Planning on ordering a cap kit for the monitor and a new subwoofer as this one completely rotted around the edge of speaker.

As this is my first video game restoration project where do I start with this Turbo with the boards.

Pic attached.

Thanks in advance,

JAZ
 

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from the look of the pic i think its related the game pcb not the monitor. [those boards are really problematic]

i also have 2 turbo's [mini and cockpit] myself.

welcome on board.
 
Just finishing my turbo resto. First thing I would do is take out all removable chips one by one and clean the pins carefully rubbing an eraser over them, and then reseat them.

Mine booted to a garbage screen when I got it, but I found a single bent pin on a rom, and after fixing it, game was great again.

I would consider replacing the tantalum capacitors on the power supply board (little blue chicklets) as they go bad and short out. Arcadepartsandrepair.com also sells a cap kit for the audio amplifier board.

If you have the upright, then Ian Kellogg sells a cap kit for the mc-2000-s monitor that works perfect for the mc-1600-s in the upright version.

I also had to replace the subwoofer, mine was totally blown out, and the switching power supply was bad as well, and all the little #44 light bulbs for the guages, coin doors, and scoreboard.

Fun game though and worth it.
 
Nice, the colors & picture looks good!

Yeah the eproms in this game go bad. You can try pulling the roms off the board, cleaning the feet & hitting the sockets with DeOxit, but it may not solve anything. You'll need to figure out which roms are bad and get new ones burned. The Turbo manual notes which roms have which graphics.

Here's a link to the manual if you don't have it already: http://www.basementarcade.com/arcade/library/manuals/t/turbo.pdf

If you don't have an eprom reader and burner you can try asking folks on here (I still need to get a few for my Turbo as well), there's also this guy that might do it: http://www.hobbyroms.com/
 
I'm starting to do a little troubleshooting for Turbo, so I was happy to find this thread. Can anyone tell me what the ROM check screen looks like in the test menu?

I get the first three chips listed at the top with "GOOD" after the chip name, but nothing else. The next page just shows "GOOD" on a blank screen, with no chip listed.

If things are working correctly, should you see a list of all the ROMs on the board?

I've done the preliminary cleaning and re-seating. The game starts up and plays now, but it get's real glitchy on the first screen transistion. I'm assuming I have some corruption in there somewhere.
 
I just had someone bring me one of these to fix. I opened it up and the boards were loose banging around. It mostly worked, but there were definitely graphics issues and the monitor kept powering off.

I told the guy I'll fix his other games, but not dealing with the Turbo. He said I could just have it and I said no thanks. Guess I'm getting more picky with what I fix, but that thing just felt like a time waster.
 
I'm starting to do a little troubleshooting for Turbo, so I was happy to find this thread. Can anyone tell me what the ROM check screen looks like in the test menu?

I get the first three chips listed at the top with "GOOD" after the chip name, but nothing else. The next page just shows "GOOD" on a blank screen, with no chip listed.

If things are working correctly, should you see a list of all the ROMs on the board?

No, the ROM test is just for the three code ROMs. The Test switch should advance you through the test pages: ROM test, RAM test (where you should just see one "GOOD"), Input test, LED test, and Sound test.
 
No, the ROM test is just for the three code ROMs. The Test switch should advance you through the test pages: ROM test, RAM test (where you should just see one "GOOD"), Input test, LED test, and Sound test.

Cool! Thanks Matt. Looks like I'll need to dump some contents and see what I'm working with.
 
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