wildbil52
Member
A few weeks ago I left my mame cabinet on overnight by mistake. When I shut it off the next day there was a strong burning smell filling my whole basement. I didn't have time to troubleshoot so I turned everything off, unplugged it from the wall and walked away.
Now that I have a few minutes to look at it... I power it up... no picture.
Pulled the chassis out and found a blown fuse. Checked the HOT, not shorted. Checked D19, D20, D21, and D22, all looked good, checked R103 and R104, also good. Then looked under the bridge the HOT is connected to and it looks like the flyback failed, more descriptively, it looks like someone shot the flyback in the head with a tiny gun and the flyback's brain splattered all over the nearby cap and metal wall.
http://i.imgur.com/VgoHVUz.jpg
Obviously, I'll need a new flyback but I also noticed that the vertical position wires were not connected on the board side. I don't know if they were like this when the chassis was still installed or if they came out when I was removing the chassis. How do these guys reconnect to the receptacle or should I just solder them to the board?
http://i.imgur.com/SCvVSXS.jpg
Now that I have a few minutes to look at it... I power it up... no picture.
Pulled the chassis out and found a blown fuse. Checked the HOT, not shorted. Checked D19, D20, D21, and D22, all looked good, checked R103 and R104, also good. Then looked under the bridge the HOT is connected to and it looks like the flyback failed, more descriptively, it looks like someone shot the flyback in the head with a tiny gun and the flyback's brain splattered all over the nearby cap and metal wall.
http://i.imgur.com/VgoHVUz.jpg
Obviously, I'll need a new flyback but I also noticed that the vertical position wires were not connected on the board side. I don't know if they were like this when the chassis was still installed or if they came out when I was removing the chassis. How do these guys reconnect to the receptacle or should I just solder them to the board?
http://i.imgur.com/SCvVSXS.jpg
