Sanyo cracked chassis between fly back and yoke

sk8ersublime

Well-known member
Joined
Mar 7, 2010
Messages
2,067
Reaction score
62
Location
Frederick, Maryland
So I have fixed this however I want to share my experience with you guys. If it need to be moved, please move.

I had a chassis that I received with 2 broken pots in the neck board and a popped 300ma fuse. The HOT was mounted incorrectly on the chassis as well.

The HOT still tested good so I hooked it up correctly and I replaced the fuse and did a full cap kit on the chassis.

I noticed a few solder bridges while working on the chassis and realized the chassis was cracked around the flyback and the big solder bridge was going from the red yoke post to pin 7 on the fly.

Continuity was good, so I continued to cap the chassis and reflow all the common points (transistors, flyback pins, fuse holder, ac, etc...).

Finished the job fired up the chassis and had a solid picture but I heard some arcing. Looked at the fly and it was flashing orange and then I saw smoke. I made a video and will have it posted here shortly.

I took the chassis out again and right at that bridge from the yoke to the fly there is a huge black spot and a hole in the chassis now!!!

I test the traces around this and verify everything is still good except the trace that the solder bridge was fixing. So I desoldered the bridge and found a small piece of wire in the glob of solder and it was soldered directly to the trace, to to a component. Pretty sure this is why it burned a hole in the board.

I soldered wire between the three points that were burned up fired up the monitor and all is well now. I have never had this happen and thought I would share!

ImageUploadedByTapatalk1361744548.840248.jpg

ImageUploadedByTapatalk1361744564.039601.jpg

ImageUploadedByTapatalk1361744574.989040.jpg

ImageUploadedByTapatalk1361744588.622724.jpg

Ill get a video up of the fire soon.
 
Your monitor was on fire and you grabbed your camera instead of switching it off immediately?

like that other guy that had the flyback arcing out the top. he was like "let me turn it on again so I can get a video!"

wow.. y'all are hardcore.
 
Your monitor was on fire and you grabbed your camera instead of switching it off immediately?

haha yea...not the best idea...but it was working fine and seemed stable then i saw a bit of smoke turned it off when i saw the flash. turned it back on to make the video then i saw the firey glow under the chassis lol....needless to say...i fixed it and it works great now! had it running for a while and no more fire or smoke...

idiots are the best teachers ;)
 
It would be cool if everyone who had a chassis catch on fire took a video of it, we could have a thread specifically for monitors on fire. Thanks for posting that.
 
Back
Top Bottom