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ramapcsx2 / gbs-control

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Please help with resistor values #352

Open ghost82uk opened 2 years ago

ghost82uk commented 2 years ago

Good evening all

I recently made the decision after a few chats to put together a GBS 8200 with the GBS Control board fitted. Followed the GitHub with the help of some videos and got it to a point where GBS Control loads, I can connect to it over wifi, but I couldn't get a stable sync using my GameCube to test. I found a guide that was talking about removing resistors R32 and R34, replacing R34 with a 75-ohm resistor instead of adding the 100-ohm resistor between sync and ground. I tried this with no luck. Can someone tell me the original values of the 2 resistors I removed as I have lost them so I can go back and try something else

Thanks all

f4f4f4f4 commented 2 years ago

I don't think R32 should be removed. R32 and R34 are 1kΩ? (I might be reading wrong, labelled "102" on SMD resistor) I have a 100Ω resistor across the sync and ground, and measuring them in-circuit: R32: 159Ω R34: 83Ω (this is where we are close to the 75Ω target)

ghost82uk commented 2 years ago

that's perfect, thanks for that, yeah 102 are 1kohm resistors, they must be in parallel as I found stuff talking about them having a 500-ohm resistance so that makes sense. Thank you so much for the help there. I'll get them soldered back in tomorrow as I should have 1k 0603's in stock