DeLoreanRide
New member
Dot Matrix Circuit Board Components; can they be fixed?
I had a problem where my dot matrix screen went out on my Jurassic Park pinball. I went through the power supply and ended up needing to replace a transistor, 2 diodes, and a capacitor.
When I powered on, there was just some static on the DMD. When I took it apart I found the smoking gun, literally:
R4 is clearly shot as you can see and transistor it goes into (Q2) is now shorted on one side so I believe those are the two that need replaced. I'm not sure if this is a random incident or whether it's all connected or what. I'd like to think this began back when the power supply components went out and are not a product of the circuit board replacement parts. I used exact parts ordered from digikey so I'm pretty confident.
R4 I believe is a 2K ohm resistor and Q2 is a transistor of unknown values. Is it possible to replace/fix things like this? Where can I find circuit board components like this? Digikey? I'm not really sure where to start.
Thanks everyone!
I had a problem where my dot matrix screen went out on my Jurassic Park pinball. I went through the power supply and ended up needing to replace a transistor, 2 diodes, and a capacitor.
When I powered on, there was just some static on the DMD. When I took it apart I found the smoking gun, literally:
R4 is clearly shot as you can see and transistor it goes into (Q2) is now shorted on one side so I believe those are the two that need replaced. I'm not sure if this is a random incident or whether it's all connected or what. I'd like to think this began back when the power supply components went out and are not a product of the circuit board replacement parts. I used exact parts ordered from digikey so I'm pretty confident.
R4 I believe is a 2K ohm resistor and Q2 is a transistor of unknown values. Is it possible to replace/fix things like this? Where can I find circuit board components like this? Digikey? I'm not really sure where to start.
Thanks everyone!