Hi,
I just got a Gottleib Super Orbit that was not working and I need some help getting it going. It is a System 80A. The playfield lights work, just needed to be replaced. However, it does not coin up or play. It has a "0" on the Player 1 and 2 display and on the Credit display. There are no lights on the back box. Also the sound card self test will play. So far, I have tested the bridge rectifiers. I got 13.9v DC across the 12v "Alimentation" rectifier, 10.9v DC across the 6v "lamps" and 28.3v DC across the 24v "Controlled Solenoid" Rectifier. I also checked the AC input voltages on the rectifiers and got 12v AC on the first, 9.1v AC on the second and this seemed strange to me, 30.3V AC on the last one. That means that the rectifier put out less DC voltage (28.3) than the input voltage of 30.3. Is that a problem with the rectifier? I did also put the multimeter on diode tester and check each of the the poles on the rectifiers. They appeared to check out ok that way, although they were still in circuit and it is the first time I have ever done that. Also I checked the poles of the two 6800uf capacitors and got 18v DC and 39v AC. I read that they need to be replaced anyway due to their age. I am wondering if I can use a single 25v 12000uf capacitor like they sell at great planes electronics? Next, at the power supply test points I get 5.6v for the 5v point, 8.5v for the 8v, and 68.6v for the 60v and 50v for the 42v test points. Is that too far out of specifications for the 60v and 42v points? Next, I did take the logic probe to the board a little. I found that the reset was pulsing high and when I removed the reset daughter card connection that stopped. I also bridged the jumpers to bypass the slam switch. I noticed that there was initially no clock activity until I increased the voltage a little on the power supply, but I was a little hesitant to adjust to much because the 60v and 42v were already higher than it seemed they should be. The clock activity began at about 5.1v and there was activity on the address bus and some on the 6502 data lines. Several pins seemed to have no connection. 30, 29, 28 for example had no reading high or low. I haven't been able to find a schematic yet or an owners manual as that had apparently been lost. There are a ton of dip switches but I have not been able to find any documentation on what they do yet. If this is available somewhere let me know. Is there a way to test the controller board? Is there a location on the controller board to jump to simulate "insert coin"?
I appreciate any advice on where to go next. Thanks.
Eric
I just got a Gottleib Super Orbit that was not working and I need some help getting it going. It is a System 80A. The playfield lights work, just needed to be replaced. However, it does not coin up or play. It has a "0" on the Player 1 and 2 display and on the Credit display. There are no lights on the back box. Also the sound card self test will play. So far, I have tested the bridge rectifiers. I got 13.9v DC across the 12v "Alimentation" rectifier, 10.9v DC across the 6v "lamps" and 28.3v DC across the 24v "Controlled Solenoid" Rectifier. I also checked the AC input voltages on the rectifiers and got 12v AC on the first, 9.1v AC on the second and this seemed strange to me, 30.3V AC on the last one. That means that the rectifier put out less DC voltage (28.3) than the input voltage of 30.3. Is that a problem with the rectifier? I did also put the multimeter on diode tester and check each of the the poles on the rectifiers. They appeared to check out ok that way, although they were still in circuit and it is the first time I have ever done that. Also I checked the poles of the two 6800uf capacitors and got 18v DC and 39v AC. I read that they need to be replaced anyway due to their age. I am wondering if I can use a single 25v 12000uf capacitor like they sell at great planes electronics? Next, at the power supply test points I get 5.6v for the 5v point, 8.5v for the 8v, and 68.6v for the 60v and 50v for the 42v test points. Is that too far out of specifications for the 60v and 42v points? Next, I did take the logic probe to the board a little. I found that the reset was pulsing high and when I removed the reset daughter card connection that stopped. I also bridged the jumpers to bypass the slam switch. I noticed that there was initially no clock activity until I increased the voltage a little on the power supply, but I was a little hesitant to adjust to much because the 60v and 42v were already higher than it seemed they should be. The clock activity began at about 5.1v and there was activity on the address bus and some on the 6502 data lines. Several pins seemed to have no connection. 30, 29, 28 for example had no reading high or low. I haven't been able to find a schematic yet or an owners manual as that had apparently been lost. There are a ton of dip switches but I have not been able to find any documentation on what they do yet. If this is available somewhere let me know. Is there a way to test the controller board? Is there a location on the controller board to jump to simulate "insert coin"?
I appreciate any advice on where to go next. Thanks.
Eric
