Arcade repair 101 - can someone explain this to me?
OK, so I am trying to solve my Q-bert issue - he refuses to go down/right.
So after spending many hours trying to troubleshoot/solve the problem, this is what I have learned:
- under the control panel, if I jump the contacts going into the 4 switches, Q-bert moves in the appropriate direction that I am jumping - except down/right. This tells me, that it is not the switch. Am I right?
- the 2 wires going to the switch (for down/right) are the solid white (common for all 4 switches and P1/P2 button) and the black/orange wire (for down/right) I follow these wires all the way to the back door of the unit where it connects to the connector board.
- if I use my meter and test connectivity for both wires - from the connectors under the control panel all the way to the board on the back door - both are good. That tells me the wire is good, with no shorts. Am I right?
- now, for the the kicker - if I jump the same 2 wires (solid white & black/orange) from the back door board connector board- Q-bert moves down/right just fine!
What am I missing here?? Basically when I jump the wires under the control panel - nothing, but when I jump it at the connector board in the back, all is fine (same wires!!).
Can someone please shine the light for me???
By the way, this is my first time ever working on an arcade. As I took a break from this issue, I looked into why the knocker wasn't working (never has for the 2 years of owning the machine). After doing my research, I jumped the Q2 transistor to use the Q4 one, and I got the knocker working! Now if I can just play the #^@% game!
Please tell me what I'm missing here!
Chris
OK, so I am trying to solve my Q-bert issue - he refuses to go down/right.
So after spending many hours trying to troubleshoot/solve the problem, this is what I have learned:
- under the control panel, if I jump the contacts going into the 4 switches, Q-bert moves in the appropriate direction that I am jumping - except down/right. This tells me, that it is not the switch. Am I right?
- the 2 wires going to the switch (for down/right) are the solid white (common for all 4 switches and P1/P2 button) and the black/orange wire (for down/right) I follow these wires all the way to the back door of the unit where it connects to the connector board.
- if I use my meter and test connectivity for both wires - from the connectors under the control panel all the way to the board on the back door - both are good. That tells me the wire is good, with no shorts. Am I right?
- now, for the the kicker - if I jump the same 2 wires (solid white & black/orange) from the back door board connector board- Q-bert moves down/right just fine!
What am I missing here?? Basically when I jump the wires under the control panel - nothing, but when I jump it at the connector board in the back, all is fine (same wires!!).
Can someone please shine the light for me???
By the way, this is my first time ever working on an arcade. As I took a break from this issue, I looked into why the knocker wasn't working (never has for the 2 years of owning the machine). After doing my research, I jumped the Q2 transistor to use the Q4 one, and I got the knocker working! Now if I can just play the #^@% game!
Please tell me what I'm missing here!
Chris
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