I recently picked-up a virgin G07 from an operator. In testing, it worked except the picture took a while to brighten fully and there was partial deflection collapse. I capped it and found two caps that had leaked (typically two purple caps), so I expected the cap kit to make it pretty again. I also did the curl mod.
However, what I find now is I get no display. When I first turned it on after the rebuild I got a lot of static on the front of the tube, but that lessened as I continued testing it. In following Randy's G07 flowchart, I get:
- 2.4Khz under the anode with my HV probe
- DO have heater glow
- F901 and F902 are testing good
- The HOT and Regulator show good (using OHM on my DMM their reading goes to infinity)
http://forums.arcade-museum.com/showthread.php?t=126760 - Thanks Dokert.
- Turning-up & down the "screen" on the flyback does NOT produce ANY picture at all.
- Tested with/without video from the game plugged in.
- Tested with/without the width coil being plugged in.
- The video input pins were reflowed (looked good)
- The color input pins that go to the neck board were reflowed (looked good)
- One leg of the flyback was reflowed (looked ?, so I did for good measure)
- Game plays blind and can be seen if I use another monitor (K7901).
I am still going through the chart and have next to test R1, but assuming it's good, then the chart doesn't suggest were to go after I do have heater glow. Anyone have any additional thoughts? I also plan to recheck my cap kit to ensure something didn't get put in incorrectly (location) or backwards. No popping was heard.
Scott C.
However, what I find now is I get no display. When I first turned it on after the rebuild I got a lot of static on the front of the tube, but that lessened as I continued testing it. In following Randy's G07 flowchart, I get:
- 2.4Khz under the anode with my HV probe
- DO have heater glow
- F901 and F902 are testing good
- The HOT and Regulator show good (using OHM on my DMM their reading goes to infinity)
http://forums.arcade-museum.com/showthread.php?t=126760 - Thanks Dokert.
- Turning-up & down the "screen" on the flyback does NOT produce ANY picture at all.
- Tested with/without video from the game plugged in.
- Tested with/without the width coil being plugged in.
- The video input pins were reflowed (looked good)
- The color input pins that go to the neck board were reflowed (looked good)
- One leg of the flyback was reflowed (looked ?, so I did for good measure)
- Game plays blind and can be seen if I use another monitor (K7901).
I am still going through the chart and have next to test R1, but assuming it's good, then the chart doesn't suggest were to go after I do have heater glow. Anyone have any additional thoughts? I also plan to recheck my cap kit to ensure something didn't get put in incorrectly (location) or backwards. No popping was heard.
Scott C.
