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.
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
The channel guide is a service just like closed caption. Rumer has it that it's not going to be around for much longer. The only fix is to unplug set ..wait awhile till memory loss occurs...plug back up and do a setup. Nothing in the TV will cause partial guide. Weak signal could and cause fuzzy picture too. Complain to cable company. But brightness problem is something else.
This RCA set uses the CTC187BD chassis. Look on the back of the set and to the right of the cable connector you will see 2 controls sticking out, one on top of the other. The top control is for focus and the bottom one is screen, or overall brightness. If these controls have been turned clockwise then you will have a bright, fuzzy picture with white lines (retrace lines) through it. Tune in a channel with white letters on the screen and turn the top (focus) control until the letters are crisp and sharp. Go into the menu and turn the contrast and brightness all the way down, and then turn the bottom control (screen) until you can just see the picture, just above the point where the picture is too dark to see. Go back into the menu and reset the contrast and brightness and the picture will be back to perfect.
The TV does not have a reset button. If you have no picture and no sound, there is something wrong with the chassis. In this case the set should be serviced by someone experienced in the RCA CTC203 chassis. If you have no picture but do have sound, then it is possible that the 2 controls in the 2 little holes in the back of the set are not adjusted correctly. This is quite possible since you said you put a screwdriver in there and got a fuzzy picture. The control on the bottom is called "screen" and is the overall brightness of the picture and the control on top is called "focus" and is the sharpness of the picture.