New Wei-Ya / Makvision Tri-sync M3129DS-LG 1 Sec Click of Death...

[Josh128]

So I have a  literally brand new unit that had some not so good convergence on on the right side low center of the screen and tried to adjust convergence rings to help. When I would get the problem area converged well, the rest of the screen was off. Tried with convergence strips, turns out the strips were only able to create more separation, ie "belly-out" the area having troubles. The problem follows the movement of the yoke, so Im quite sure its a yoke issue and not a tube issue, so I decided to remove the yoke to inspect.

Sure enough, inside the yoke there were 10-12 very small mag strips taped to the coils in strategic locations, and it appeared that the tape holding some of them had come loose and some were dangling out of place. After carefully inspecting, I was pretty confident I was able to re-secure them about where they were before due to the tell-tale sticky tape residue on the coils. Once I did this, I re-installed the yoke and THOUGHT I had everything plugged in correctly, only to find I had a single vertical line of the game I was displaying. I quickly pulled power and found that I had not fully seated the H/V deflection coils connector on the board-- Im thinking the vertical coil was connected but not the horizontal.

Upon re-seating the connector properly, I re-powered the monitor and didnt get any static sound of it coming on or any picture at all for that matter-- only a light "click" sound every second or two. Is it possible that not having the deflection yoke fully connected caused something to blow in the chassis board? I came across the post below with a user having the same issue and he was able to replace a bad diode to fix it.

viewtopic.php?f=4&t=32612

For CRT experts out there, is it a common problem to blow a chassis by powering up with the deflection yoke not connected? It only stayed like this a few seconds before I powered down. Can anyone provide some insight?