(Topic ID: 50546)

Sega Frankenstein; couple of issues


By BinGhanem

6 years ago



Topic Stats

  • 5 posts
  • 2 Pinsiders participating
  • Latest reply 6 years ago by BinGhanem
  • No one calls this topic a favorite

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#1 6 years ago

Hi everyone,

I posted while ago about picking up three machine, CV, Frankenstein and NBA Fastbreak.

I picked them up, sold CV and NBA and kept Frankenstein, the body and machines looks really good, I thought it would be great to keep it.

I do have some issues though with the machine and I can make it as a project pin, just to fix the problems, no need for any touch up or body work, I was surprised how clean is the back of the playfield.

The fist issue is the display, which I know its a huge issue, it doesn't work, I tried to remove the connectors, clean them and attached them again, but same problem.

second is the ball kicker and ejector.

First time I turned on the game, smoke came out from somewhere, when I checked today again, no smoke, but the paper around the coil is brown, so I assume its a transistor, don't know which one to check, I lost my multimeter lol will get one tomorrow.

I can't make a test because the screen doesn't work, is there any trick before I start looking for new display, I heard its really hard to find one these days.

Finally, there is a buzzing sound coming from the transformer, is that normal with the old games? same thing with NBA fastbreak when I started it.

#2 6 years ago

Buzzing is bad, might have other shorted crap going on.

Get a manual, if you don't have one. Great to find which transistor, replace it and coil.

Also you can check power to the DMD ( carefully - it is high ), then you know if you have power issues to DMD, or DMD issues.

Best wishes.

LTG : )

#3 6 years ago
Quoted from LTG:

Also you can check power to the DMD ( carefully - it is high ), then you know if you have power issues to DMD, or DMD issues.

Can you tell me how to check the power ? with MM ?

Thanks !

#4 6 years ago

Do you have a meter ?

If so, your manual has info on the big connector going to the DMD and what voltage is at each pin.

So you set meter to DC, one probe on ground and the other touch each pin on the big connector at the DMD with game turned on.

If you need to learn how to use a meter, go over to YouTube and search for using a DMM. Lots of good and short videos to get you started.

LTG : )

#5 6 years ago

Thanks for the reply,

I found out Q29 is burned, I actually saw a smoke coming from the transistor, so before changing the coil's I'll have to change the transistor then the coil.

The only Q29 made a sound when I check it by the MM, all other transistors do not.

Haven't check the display yet, the manual looks complicated, but I'll figure it out lol

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