G07 blowing F901

[Coin-Op]

Hey guys,

Have a G07-904 monitor from a ms pac that is dead. The F901 fuse blows. I replaced the HOT and the flyback, put it back together, new fuse, tube on neck of monitor glows purple, makes a crackling sound and the light inside jumps around a lot. After about 30 seconds of this with no picture the fuse blows again and takes the HOT with it usually. I am out of ideas on this one. Any reccomendations as to what might be wrong?

Thanks!

 

[ed12]

hi
Have a G07-904 monitor from a ms pac that is dead. The F901 fuse blows. I replaced the HOT and the flyback, put it back together, new fuse, tube on neck of monitor glows purple, makes a crackling sound and the light inside jumps around a lot. After about 30 seconds of this with no picture the fuse blows again and takes the HOT with it usually. I am out of ideas on this one. Any reccomendations as to what might be wrong?<

the tube is shorted or cracked
ethier way u are causing an arc to ground
on the neck baord is what is called a :spark-gap: it is part of the socket
but from what u have stated ^^^ i would think shorted tube /crack in neck where the gas was let out

ed

[lilshawn]

i agree, if it's purple INSIDE the neck of the tube, there is an issue with the tube.

it should glow a nice mellow orange, not hot plasma arcs. you may have a short inside the tube or have a crack somewhere and the vacuum has been lost.

[boardjunkie]

Gassy tube. Get  a different one....