dbstallman
Member
Well, I got a replacement tube for my big cab after the cargange detailed here : http://forums.arcade-museum.com/showthread.php?t=240883. Thank you jbacon1054!!
This tube is an EXACT match for my old one, a Toshiba LR27012. I have adjusted the flyback's focus and screen for a beautiful picture, but I now have some size issues. Here is the info on my chassis (including a low res scan of the manual) : http://wiki.arcadeotaku.com/w/Nanao_MS8-29
1. The horizontal with will adjust to see the entire screen for most of the first dozen boards I have tried, but only if the adjustment pot is turned all the way down. That means I basicly have no horizontal width adjustment any longer. There are a few boards (CPS-1 boards, Mr. Do so far) that have about 3 or 4 pixels beyond the edges on both sides and I cannot make it any smaller. I have moved the wire for the width to both W and N (it started on N) and games will only fit on N with the pot cranked all the way down.
2. There is rollover on the bottom of the screen. It isn't the tube since it moves to the other side when I swap the connectors for reversed/inverted display. I suspect this is a size issue as well since the vertical size pot is adjusted almost all the way up. When the pot is adjusted the other way, the vertical size is right at about half of the screen height, with no rollover.
There are some mentions of fixes on the Arcade Otaku wiki, notably one for rollover I am going to try.
The old tube didn't have these issues. Is this normal for a new tube when it is the same brand and model? Does anyone know of other adjustments on this chassis beyond what is listed in the manual? There doesn't appear to be a horizontal width coil on it. I haven't pulled the chassis back off yet, I was just checking to see if anyone had suggestions before I attacked it.
Thanks,
Brian.
This tube is an EXACT match for my old one, a Toshiba LR27012. I have adjusted the flyback's focus and screen for a beautiful picture, but I now have some size issues. Here is the info on my chassis (including a low res scan of the manual) : http://wiki.arcadeotaku.com/w/Nanao_MS8-29
1. The horizontal with will adjust to see the entire screen for most of the first dozen boards I have tried, but only if the adjustment pot is turned all the way down. That means I basicly have no horizontal width adjustment any longer. There are a few boards (CPS-1 boards, Mr. Do so far) that have about 3 or 4 pixels beyond the edges on both sides and I cannot make it any smaller. I have moved the wire for the width to both W and N (it started on N) and games will only fit on N with the pot cranked all the way down.
2. There is rollover on the bottom of the screen. It isn't the tube since it moves to the other side when I swap the connectors for reversed/inverted display. I suspect this is a size issue as well since the vertical size pot is adjusted almost all the way up. When the pot is adjusted the other way, the vertical size is right at about half of the screen height, with no rollover.
There are some mentions of fixes on the Arcade Otaku wiki, notably one for rollover I am going to try.
The old tube didn't have these issues. Is this normal for a new tube when it is the same brand and model? Does anyone know of other adjustments on this chassis beyond what is listed in the manual? There doesn't appear to be a horizontal width coil on it. I haven't pulled the chassis back off yet, I was just checking to see if anyone had suggestions before I attacked it.
Thanks,
Brian.