Rca scenium hd52w140 chassis atc311 looks a bit fuzzy .....
Just got this thing running again tonight and the screen looks a little out of focus or fuzzy. also anything black looks kind of bright ; i tried the auto converge and it couldnt complete because one of the sensors is bad; it hink it said. any ideas on what i can do to make this tv look clearer and anything about the sensors? it stops on the first convergence color green. thanks a lot. i had it working a week ago and did the auto convergence no problem. think i could have jarred something lose? where would be a good place to start. thanks again
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This has the ATC311 chassis. I have found that capacitor C14703 has actually been loose on the deflection board and that had caused the set to have a white screen with retrace lines then the set would shutdown. I resolderd this and normal operation was resumed.
Adjust the focus on the red CRT slightly that should take care of the issue. The focus controls are located behind the lower front panel and the secondary access panel. Its a rectangle box about the size of a pack of cigarettes it has 6 dials on it 3 for the focus and 3 for the screens.
I cannot think of anything easy that would cause the symtoms you are describing. Your power supply is working and the deflection bd is good because you have HV. The problem is signal related and all of this circuitry is on the SSB or small signal bd. The difficult thing is when replacing this bd. you must have RCA's chipper check to download all of the ssb eeprom settings so they can be uploaded to the new ssb. I'm affraid you will need a qualifier RCA service tech for this problem.
Sounds as if you'll have to replace the regulator and filter cap for it, at the very least. You may have taken out the flyback again, as they're not very hardy when driven with too much AC bias. The arc that you are calling a spark will have to be addressed also. If you have an intermittent connection at that point, the feedback voltage will be incorrect and you'll have the same scenario on dealing with a dead set once again. Hope this helps....accordianman