musicman282
Active member
So I'm still trying to get my omega race to work. I plugged in the board on Tuesday and I had sound, but not picture on the monitor. I pulled the deflection board from the G05 and noticed that F600 and F700 were both blown. I searched on the forum a bit and saw the recommendations to reflow everything on the board due to bad solder joints. I took this advice and reflowed all the solder on the board. I installed new 2A fuses in F600 and F700 and fired up the game. I turned the lights off so I could see if any fuses blew. As soon as I powered the game on, I saw F600 blow. I could hear deflection chatter so I looked at the screen and could see a bright horizontal line. I was making progress. I could tell that I was just missing the vertical deflection. I powered down the monitor and after checking the schematics decided to check Q608,Q609 located on the chasis frame. One tested open and the other tested short. I thought I had found my culprit. I ordered 4 new ones from Bob Roberts and received them today. I popped the new transistors in and fired up the game and the monitor worked perfectly!!. I was so happy. I reinstalled the monitor in the cabinet and proceeded to play about 20 games of Omega Race. After the 20th game I went around back to adjust the width of the screen on the board and was turning the pot and bang the Y section blew up. I replaced Q608,Q609 since they tested bad again, replaced f600 and powered up the game. F600 immediately blew. I pulled the deflection board and started testing the transistors and found Q606 and Q605 to be bad.
My question is this. What do you think caused this? Could I have turned the height adjustment too high and the gameboard caused an overvoltage on the monitor? I was turning the pot while the game was on. Is there a way to prevent this from happening in the future other than just replacing components as they fail? Are these monitors typically reliable?
Thanks for you help!!
My question is this. What do you think caused this? Could I have turned the height adjustment too high and the gameboard caused an overvoltage on the monitor? I was turning the pot while the game was on. Is there a way to prevent this from happening in the future other than just replacing components as they fail? Are these monitors typically reliable?
Thanks for you help!!