(Topic ID: 235621)
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Piershil
Quoted from Coils:Hi inkochnito,
What I did notice is that solenoids 12-15 (Blackbox #67 flashers) are also not functioning.
Did you check the big white cement resistor in the backbox?
Do you have voltage at the lamps?
Quoted from Coils:Hi incognito,
I hope I’m following you correctly.
I have power on all fuses F16-F26. All fuses checked good out of circuit.
What I did notice is that solenoids 12-15 (Blackbox #67 flashers) are also not functioning.
I also checked the slingshot coil continuity from sling coil to A3JF connector.
Left side has continuity on pin 1-5 starting from the top left as the connector is attached to the board. The continuity was checked on both sides of the coil.
The right side is different. The left coil connection had continuity to pin 1-5. The right side, only has continuity to pin 4 and 5.
Seems kind of odd that the pin set up is different, or?
What are your thoughts?
Many thanks my friend!!!
ehhh, incognito is someone else....
I'm inkochnito, but no problem.
If you have power at the fuses, do you also have power at the coils?
At both lugs of the coil?
As for continuity.... I do not see what you did, so I don't know.
I cannot find connector A3JF...
Quoted from Coils:Hi inkochnito ,
I have no power going to the 67 flasher bulbs for solenoids 12 through 15.
I also attempted to measure if power is coming out from the driver board section P5 that has the connector A3J5 plugged to it. No power here either. I do however continuity from the bulb posts to the connector A3J5 connector.
Hopefully I’ll have time tomorrow to take a look at the driver board.
Thanks for hanging in there for me as I troubleshoot the problems.
Regards,
Troy
The power (20VDC) is comming from the transformer.
Connector A12J3 pin 6, 13 and/or 14, both with a 588 (green-gray-gray) coded wire.
Going thru connector A9P9/J9 to the 0.33 ohm resistor mentioned earlier.
After the resistor the wore changes to 188 (brown-gray-gray) coded wire and goes to the lamps.
Do the flashers on the playfield work?
(left & right ramp, Mario's Cave, upper playboard, Billboard)
Quoted from Coils:Oh one more thing. I haven’t reflowed the solder on the driver board because it’s a brand new rottendog driver board. And the problems existed on the original Gottlieb driver board....
I don't know the Rottendog driver board.
I do not have schematics for that board.
Please note that the information I provide is from the manual and the original Gottlieb boards.
Quoted from Coils:Hi inkochnito ,
Looks like my driver board is fine.
I have 23 volts from the transformer to connector A9P9.
So I think your correct with a bad resistor. I don’t have cement resistors but I need to find R1 like you mentioned earlier. I found out from a post from phillymadison that R2 goes to the playfield flashers and R1 goes to the backbox flashers.
Do you or does anybody know where R1 resistor is located on a Super Mario Bros?
Hmmm, I may have similar problems with the slingshots not working...
Many Thanks,
Troy
We now know that the power supply (transformer panel) is good.
23 volts is present.
If you can find the R1 resistor in the backbox, you will find the problem (I think).
The non working slingshots are a different problem.
Quoted from Coils:Hi inkochnito,
Do you know where R1 resistor is located?
I see one on the driver board, one on the cpu, one on the aux power supply and also one on a Board underneath the playfield. But they all measure good...
With your help Im getting close to solving the problem.
I also seen that your a member of flippermarkt. Sehr geil!!!
Many thanks my friend,
Troy
No, sorry. I don't know.
I do not have a Super Mario machine.
I can also be a gray resistor.
Show me a picture of the back of the insert or the back box...
Perhaps I can spot it.
Quoted from Coils:Hi inkochnito ,
I think I found it. R1 resistor is on the back and lower left of the swinging light Matrix door. See attached photos. After replacing this, the back box flashers should be operational again.
I also replaced all 8 bulbs. 5 of them were blown. Guess I should have checked them first. Oh well, learn something new every day.
Would have been nice though if R1 was labeled!
Still need your help with the slingshots, when you have some time...
Thanks so much
Troy
[quoted image][quoted image]
Good find!
One down, one to go.....
I was looking at the PinWiki and found this solution just now. 
http://www.pinwiki.com/wiki/index.php?title=Gottlieb_System_3#Flasher_Problems
For the slingshots first try this:
Game power on.
Using an alligator clip test lead, attach one end to ground in the backbox.
Momentarily touch the other end of the alligator test lead to the metal tab on the MosFET (for the slingshots, Q4 and Q5).
Be aware, it might create a spark!
This should energize the coil.
If this happens, there might be an electronic problem.
This is some good reading too.
http://www.pinrepair.com/sys3/#driver
Peter
Just to verify if the grounding test is working, did you also test on other metal tabs?
If grounding the metal tab works on others too, the test is working correctly.
The voltage for the slingshots is lost somewhere between the coil and the driver board.
Check connector A9J7 pin 4 and 5 if voltage is present.
Wire colors are 233 (red-orange-orange) and 244 (red-yellow-yellow).
Also check the opposit side of the connector.
Next check connector A3J5 pin 4 and 5 at the driver board.
Same color codes.
Somewhere there is a problem...
3 weeks later
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