I was troubleshooting some LED lighting issues with Barb. I had just replaced some incandescent with LEDs that the last owner did not get around to. When I powered it up a electronic burn smell was present. I initially thought it was the quad opto board because some of the lights would not work and I traced them back to a ground in the quad opto board. My opto board would not work correctly with only 3 leds lit and 2 drops hole that would not register. There is an 8 pin and 10 pin mollex connector on the board. I unplugged the 10 pin and all 4 leds lit. I was going to replace it but I went searching for the smell. It was in the back box on the MA-1629 sound board lower input connectors. Both have burn marks and does not look damaged besides the burns but it could have scrambled its memory. Would anyone have any good ideas before I start replacing misc boards????? Thanks from Larry in New Mexico.

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Wow you guys are great!!!! I have a direction to go!!!
Larry from New Mexico

Oh Yeah and Big Fatso did eat my lunch......LOL

Ok, does anyone know where I can get the MA-1629 board? I have emails into Marcos and Pinball resource but everyone is showing out of stock. Anyone have a manual for sale????
Thanks

Well I did find the actual board that has the issue as was explained in Alexandr1's explanation. Thank you very much. As a tech I should be more observant. The MA1358 board is available so I am good there. I was going to attempt to replace the burnt transistors but upon further inspection of the board it has been repaired before and has some haywires and resistors added and repair soldering. I think it would be in my best interest to buy a new one. The field lighting that was an issue did have some non working sockets so I will replace some of them. I did have a non-working LED that broke in two that may have shorted it as well. Would anyone know if the Rottendog Driver for Gottlieb Premier System 3, MA-1358, GDB003 is compatible? It has the same connectors but a different component lay out.
CONDITION: New

In stock
$110.00

Thanks for the help.
Larry

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Yep

Update,,,,My Barb Wire manual came in. I replaced transistor #38 on the board that was burnt. It took some creative soldering to get the traces to solder. I also checked my lamps and found one non working that fell apart and may have been a short. I haven't been able to follow the schematic to the component #38 switches. I guess I missed that class. I am not a pinball tech, I am a board level not component level tech in a different field. I will re-check the fuses amperages and all are slo-blo but I did replace one when I first started this problem.

Barb is working in full capacity at present. I have a new board on-order with Big Daddy. I will leave the old-Mr. Burns board in play until I am comfortable it is not going to burn again.

Thanks everyone for your expertise and patience. Pinball machines are my new hobby.
Larry

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