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I posted a while back about a strange anomaly that I had in an XG where the bottom left corner on the red tube would not converge. In fact, on the last two 'fine' point adjustments, the red didn't move at all in a V direction.
Changing the C board did nothing, neither did changing the system and wave boards.
I finally did a hard reset, and everything came back just fine.
Today I worked on an XG 135LC that had corner focus that was nonexistent. BAd thing was, the set worked in the shop fine, I flipped the image at the customers home (locally, luckily!) and the set looked horrible. After fighting with it for an hour, I took it back down and back to the shop.
What was strange is that the R and G tubes were original NEC's, the blue was a VDC. When I went into the astig adjustment, most of hte dots were round, but changed in overall size from the middle to the top and bottom, nothing was uniform.
After changing the A and C output boards and still getting no results, I did another hard reset.
Voila, everything dropped into place.
The good thing is, a hard reset seems to cure a nuber of strange and obscure problems, and is the fastest way to reset all convergence memories to 0. The bad thing is, the set almost always needs a full color balance, and that can take 4 hours like it did today. End result was a perfect working set.
I'm NOT going to post how to do a hard reset, if you have never done it before, then don't anyways. For those that have, try doing one the next time you have an XG that just looks 'off'.
Curt
Changing the C board did nothing, neither did changing the system and wave boards.
I finally did a hard reset, and everything came back just fine.
Today I worked on an XG 135LC that had corner focus that was nonexistent. BAd thing was, the set worked in the shop fine, I flipped the image at the customers home (locally, luckily!) and the set looked horrible. After fighting with it for an hour, I took it back down and back to the shop.
What was strange is that the R and G tubes were original NEC's, the blue was a VDC. When I went into the astig adjustment, most of hte dots were round, but changed in overall size from the middle to the top and bottom, nothing was uniform.
After changing the A and C output boards and still getting no results, I did another hard reset.
Voila, everything dropped into place.
The good thing is, a hard reset seems to cure a nuber of strange and obscure problems, and is the fastest way to reset all convergence memories to 0. The bad thing is, the set almost always needs a full color balance, and that can take 4 hours like it did today. End result was a perfect working set.
I'm NOT going to post how to do a hard reset, if you have never done it before, then don't anyways. For those that have, try doing one the next time you have an XG that just looks 'off'.
Curt